Merge

2026-06-19 11:28:58 +02:00 · 2026-05-07 00:51:20 -07:00
parent 438b4c6658 437386b87e
commit 3ad23b0506
41 changed files with 1902 additions and 276 deletions
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -10,6 +10,10 @@ Security is obviously paramount for a project like Secretive. As such, any contr

 Secretive is designed to be easily auditable by people who are considering using it. In keeping with this, Secretive has no third party dependencies, and any contributions which bring in new dependencies will be rejected.

+### AI/LLM Policy
+
+For security and auditing reasons similar to the policy Secretive has on dependencies, any code generated with AI or LLM tools will not be accepted.
+
 ## Code of Conduct

 All contributors must abide by the [Code of Conduct](CODE_OF_CONDUCT.md)
--- a/Package.swift
+++ b/Package.swift
@@ -22,9 +22,15 @@ let package = Package(
        .library(
            name: "SmartCardSecretKit",
            targets: ["SmartCardSecretKit"]),
+        .library(
+            name: "CertificateKit",
+            targets: ["CertificateKit"]),
        .library(
            name: "SSHProtocolKit",
            targets: ["SSHProtocolKit"]),
+        .library(
+            name: "Formatters",
+            targets: ["Formatters"]),
    ],
    dependencies: [
    ],
@@ -56,9 +62,16 @@ let package = Package(
            resources: [localization],
            swiftSettings: swiftSettings
        ),
+        .target(
+            name: "CertificateKit",
+            dependencies: ["SecretKit", "Formatters"],
+            path: "Sources/Packages/Sources/CertificateKit",
+            resources: [localization],
+            swiftSettings: swiftSettings,
+        ),
        .target(
            name: "SSHProtocolKit",
-            dependencies: ["SecretKit"],
+            dependencies: ["SecretKit", "CertificateKit"],
            path: "Sources/Packages/Sources/SSHProtocolKit",
            resources: [localization],
            swiftSettings: swiftSettings,
@@ -69,6 +82,13 @@ let package = Package(
            path: "Sources/Packages/Tests/SSHProtocolKitTests",
            swiftSettings: swiftSettings,
        ),
+        .target(
+            name: "Formatters",
+            dependencies: [],
+            path: "Sources/Packages/Sources/Formatters",
+            resources: [localization],
+            swiftSettings: swiftSettings,
+        ),
    ]
 )

--- a/Sources/Packages/Package.swift
+++ b/Sources/Packages/Package.swift
@@ -19,12 +19,21 @@ let package = Package(
        .library(
            name: "SmartCardSecretKit",
            targets: ["SmartCardSecretKit"]),
+        .library(
+            name: "CertificateKit",
+            targets: ["CertificateKit"]),
        .library(
            name: "SecretAgentKit",
            targets: ["SecretAgentKit"]),
+        .library(
+            name: "Formatters",
+            targets: ["Formatters"]),
        .library(
            name: "Common",
            targets: ["Common"]),
+        .library(
+            name: "SharedXPCServices",
+            targets: ["SharedXPCServices"]),
        .library(
            name: "Brief",
            targets: ["Brief"]),
@@ -61,9 +70,15 @@ let package = Package(
            resources: [localization],
            swiftSettings: swiftSettings,
        ),
+        .target(
+            name: "CertificateKit",
+            dependencies: ["SecretKit", "Formatters"],
+            resources: [localization],
+            swiftSettings: swiftSettings,
+        ),
        .target(
            name: "SecretAgentKit",
-            dependencies: ["SecretKit", "SSHProtocolKit", "Common"],
+            dependencies: ["SecretKit", "SSHProtocolKit", "CertificateKit", "Common", "Formatters"],
            resources: [localization],
            swiftSettings: swiftSettings,
        ),
@@ -73,7 +88,7 @@ let package = Package(
        ),
        .target(
            name: "SSHProtocolKit",
-            dependencies: ["SecretKit"],
+            dependencies: ["SecretKit", "CertificateKit"],
            resources: [localization],
            swiftSettings: swiftSettings,
        ),
@@ -82,12 +97,24 @@ let package = Package(
            dependencies: ["SSHProtocolKit"],
            swiftSettings: swiftSettings,
        ),
+        .target(
+            name: "Formatters",
+            dependencies: [],
+            resources: [localization],
+            swiftSettings: swiftSettings,
+        ),
        .target(
            name: "Common",
            dependencies: ["SSHProtocolKit", "SecretKit"],
            resources: [localization],
            swiftSettings: swiftSettings,
        ),
+        .target(
+            name: "SharedXPCServices",
+            dependencies: ["CertificateKit", "SSHProtocolKit"],
+            resources: [localization],
+            swiftSettings: swiftSettings,
+        ),
        .target(
            name: "Brief",
            dependencies: ["XPCWrappers", "SSHProtocolKit"],
--- a/Sources/Packages/Resources/Localizable.xcstrings
+++ b/Sources/Packages/Resources/Localizable.xcstrings
@@ -365,16 +365,6 @@
      },
      "shouldTranslate" : false
    },
-    "%@ - %@" : {
-      "localizations" : {
-        "en" : {
-          "stringUnit" : {
-            "state" : "new",
-            "value" : "%1$@ - %2$@"
-          }
-        }
-      }
-    },
    "about_build_log_button" : {
      "extractionState" : "manual",
      "localizations" : {
@@ -5557,6 +5547,130 @@
          }
        }
      }
+    },
+    "certificate_detail_critical_options_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Critical Options"
+          }
+        }
+      }
+    },
+    "certificate_detail_extensions_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Extensions"
+          }
+        }
+      }
+    },
+    "certificate_detail_key_id_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Key ID"
+          }
+        }
+      }
+    },
+    "certificate_detail_path_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Certificate Path"
+          }
+        }
+      }
+    },
+    "certificate_detail_principals_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Principals"
+          }
+        }
+      }
+    },
+    "certificate_detail_serial_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Serial Number"
+          }
+        }
+      }
+    },
+    "certificate_detail_sha256_public_key_fingerprint_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Public Key Fingerprint"
+          }
+        }
+      }
+    },
+    "certificate_detail_sha256_signing_key_fingerprint_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Signing CA Fingerprint"
+          }
+        }
+      }
+    },
+    "certificate_detail_valid_after_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Valid After"
+          }
+        }
+      }
+    },
+    "certificate_detail_valid_until_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Valid Until"
+          }
+        }
+      }
+    },
+    "certificate_detail_validity_range_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Validity Range"
+          }
+        }
+      }
+    },
+    "Certificates" : {
+
    },
    "copyable_click_to_copy_button" : {
      "extractionState" : "manual",
@@ -10004,181 +10118,181 @@
        "af" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "ar" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "ca" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "Esborrar %1$(secretName)@?"
+            "value" : "Esborrar %1$(name)@?"
          }
        },
        "cs" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "da" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "de" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "%1$(secretName)@ Löschen?"
+            "value" : "%1$(name)@ Löschen?"
          }
        },
        "el" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "en" : {
          "stringUnit" : {
-            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "state" : "translated",
+            "value" : "Delete %1$(name)@?"
          }
        },
        "es" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "fi" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "Poista %1$(secretName)@?"
+            "value" : "Poista %1$(name)@?"
          }
        },
        "fr" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "Supprimer %1$(secretName)@?"
+            "value" : "Supprimer %1$(name)@?"
          }
        },
        "he" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "hu" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "it" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "Eliminare %1$(secretName)@?"
+            "value" : "Eliminare %1$(name)@?"
          }
        },
        "ja" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "%1$(secretName)@を削除しますか?"
+            "value" : "%1$(name)@を削除しますか?"
          }
        },
        "ko" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "%1$(secretName)@를 지우겠습니까?"
+            "value" : "%1$(name)@를 지우겠습니까?"
          }
        },
        "nb" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "nl" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "pl" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "Usunąć %1$(secretName)@?"
+            "value" : "Usunąć %1$(name)@?"
          }
        },
        "pt" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "pt-BR" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "Deletar %1$(secretName)@?"
+            "value" : "Deletar %1$(name)@?"
          }
        },
        "ro" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "ru" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "Удалить %1$(secretName)@?"
+            "value" : "Удалить %1$(name)@?"
          }
        },
        "sr" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "sv" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "tr" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "uk" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "vi" : {
          "stringUnit" : {
            "state" : "new",
-            "value" : "Delete %1$(secretName)@?"
+            "value" : "Delete %1$(name)@?"
          }
        },
        "zh-Hans" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "删除“%1$(secretName)@”吗？"
+            "value" : "删除“%1$(name)@”吗？"
          }
        },
        "zh-Hant" : {
          "stringUnit" : {
            "state" : "translated",
-            "value" : "刪除「%1$(secretName)@」嗎？"
+            "value" : "刪除「%1$(name)@」嗎？"
          }
        }
      }
@@ -19647,6 +19761,28 @@
        }
      }
    },
+    "rename_certificate_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Name"
+          }
+        }
+      }
+    },
+    "rename_certificate_name_placeholder" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Certificate Name"
+          }
+        }
+      }
+    },
    "reveal_in_finder_button" : {
      "extractionState" : "manual",
      "localizations" : {
@@ -19832,11 +19968,16 @@
        }
      }
    },
-    "Review" : {
-
-    },
-    "Review All" : {
-
+    "secret_detail_certificate_path_label" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Matching Certificates"
+          }
+        }
+      }
    },
    "secret_detail_md5_fingerprint_label" : {
      "extractionState" : "manual",
--- a/Sources/Packages/Sources/CertificateKit/Certificate.swift
+++ b/Sources/Packages/Sources/CertificateKit/Certificate.swift
@@ -0,0 +1,24 @@
+import Foundation
+import CryptoKit
+import Formatters
+
+@dynamicMemberLookup
+public struct Certificate: Sendable, Codable, Equatable, Hashable, Identifiable, CustomDebugStringConvertible {
+
+    public var openSSHCertificate: OpenSSHCertificate
+    public let rawData: Data
+
+    public init(openSSHCertificate: OpenSSHCertificate, rawData: Data) {
+        self.openSSHCertificate = openSSHCertificate
+        self.rawData = rawData
+    }
+
+    public var id: String { Insecure.MD5.hash(data: rawData).formatted(.hex(separator: "")) }
+
+    public var debugDescription: String { openSSHCertificate.debugDescription }
+
+    public subscript<T>(dynamicMember keyPath: KeyPath<OpenSSHCertificate, T>) -> T {
+        openSSHCertificate[keyPath: keyPath]
+    }
+
+}
--- a/Sources/Packages/Sources/CertificateKit/CertificateStore.swift
+++ b/Sources/Packages/Sources/CertificateKit/CertificateStore.swift
@@ -0,0 +1,153 @@
+import Foundation
+import Observation
+import Security
+import os
+import SecretKit
+
+@Observable @MainActor public final class CertificateStore: Sendable {
+
+    public private(set) var certificates: [Certificate] = []
+
+    /// Initializes a Store.
+    public init() {
+        loadCertificates()
+        Task {
+            for await note in DistributedNotificationCenter.default().notifications(named: .certificateStoreUpdated) {
+                guard Constants.notificationToken != (note.object as? String) else {
+                    // Don't reload if we're the ones triggering this by reloading.
+                    continue
+                }
+                loadCertificates()
+            }
+        }
+    }
+
+    public func reloadCertificates() {
+        let before = certificates
+        certificates.removeAll()
+        loadCertificates()
+        if certificates != before {
+            NotificationCenter.default.post(name: .certificateStoreReloaded, object: self)
+            DistributedNotificationCenter.default().postNotificationName(.certificateStoreUpdated, object: Constants.notificationToken, deliverImmediately: true)
+        }
+    }
+
+    public func save(certificate: Certificate) throws {
+        let attributes = try JSONEncoder().encode(certificate.openSSHCertificate)
+        let keychainAttributes = KeychainDictionary([
+            kSecClass: Constants.keyClass,
+            kSecAttrService: Constants.keyTag,
+            kSecAttrAccount: certificate.id,
+            kSecUseDataProtectionKeychain: true,
+            kSecAttrAccessible: kSecAttrAccessibleWhenUnlockedThisDeviceOnly,
+            kSecValueData: certificate.rawData,
+            kSecAttrGeneric: attributes
+        ])
+        let status = SecItemAdd(keychainAttributes, nil)
+        if status != errSecSuccess && status != errSecDuplicateItem {
+            throw KeychainError(statusCode: status)
+        }
+        reloadCertificates()
+    }
+
+    public func delete(certificate: Certificate) throws {
+        let deleteAttributes = KeychainDictionary([
+            kSecClass: Constants.keyClass,
+            kSecAttrService: Constants.keyTag,
+            kSecUseDataProtectionKeychain: true,
+            kSecAttrAccount: certificate.id,
+        ])
+        let status = SecItemDelete(deleteAttributes)
+        if status != errSecSuccess {
+            throw KeychainError(statusCode: status)
+        }
+        reloadCertificates()
+    }
+
+    public func update(certificate: Certificate) throws {
+        let updateQuery = KeychainDictionary([
+            kSecClass: Constants.keyClass,
+            kSecAttrAccount: certificate.id,
+        ])
+
+        let cert = try JSONEncoder().encode(certificate.openSSHCertificate)
+        let updatedAttributes = KeychainDictionary([
+            kSecAttrGeneric: cert,
+        ])
+
+        let status = SecItemUpdate(updateQuery, updatedAttributes)
+        if status != errSecSuccess {
+            throw KeychainError(statusCode: status)
+        }
+        reloadCertificates()
+    }
+
+    public func certificates(for secret: any Secret) -> [Certificate] {
+        certificates.filter { $0.openSSHCertificate.publicKey.data == secret.publicKey }
+    }
+
+
+}
+
+extension CertificateStore {
+
+    /// Loads all certificates from the store.
+    private func loadCertificates() {
+        let queryAttributes = KeychainDictionary([
+            kSecClass: Constants.keyClass,
+            kSecAttrService: Constants.keyTag,
+            kSecUseDataProtectionKeychain: true,
+            kSecReturnData: true,
+            kSecMatchLimit: kSecMatchLimitAll,
+            kSecReturnAttributes: true
+            ])
+        var untyped: CFTypeRef?
+        unsafe SecItemCopyMatching(queryAttributes, &untyped)
+        guard let typed = untyped as? [[CFString: Any]] else { return }
+        let decoder = JSONDecoder()
+        let wrapped: [Certificate] = typed.compactMap {
+            do {
+                guard let data = $0[kSecValueData] as? Data,
+                      let attributesData = $0[kSecAttrGeneric] as? Data else {
+                    throw MissingAttributesError()
+                }
+                return Certificate(openSSHCertificate: try decoder.decode(OpenSSHCertificate.self, from: attributesData), rawData: data)
+            } catch {
+                return nil
+            }
+        }
+            .filter {
+                if let validityRange = $0.validityRange {
+                    validityRange.contains(Date())
+                } else {
+                    true
+                }
+            }
+
+        certificates.append(contentsOf: wrapped)
+    }
+
+    
+}
+
+extension CertificateStore {
+
+    enum Constants {
+        static let keyClass = kSecClassGenericPassword as String
+        static let keyTag = Data("com.maxgoedjen.certificatestore.opensshcertificate".utf8)
+        static let notificationToken = UUID().uuidString
+    }
+    
+    struct UnsupportedAlgorithmError: Error {}
+    struct MissingAttributesError: Error {}
+
+}
+
+extension NSNotification.Name {
+
+    // Distributed notification that keys were modified out of process (ie, that the management tool added/removed certificates)
+    public static let certificateStoreUpdated = NSNotification.Name("com.maxgoedjen.Secretive.certificateStore.updated")
+    // Internal notification that certificates were reloaded from the backing store.
+    public static let certificateStoreReloaded = NSNotification.Name("com.maxgoedjen.Secretive.certificateStore.reloaded")
+
+}
--- a/Sources/Packages/Sources/CertificateKit/OpenSSHCertificate.swift
+++ b/Sources/Packages/Sources/CertificateKit/OpenSSHCertificate.swift
@@ -0,0 +1,82 @@
+import Foundation
+import Formatters
+
+public struct OpenSSHCertificate: Sendable, Codable, Equatable, Hashable, CustomDebugStringConvertible {
+
+    public var type: CertificateType
+    public var name: String
+    public var data: Data
+
+    public var publicKey: PublicKey
+    public var principals: [String]
+    public var keyID: String
+    public var serial: UInt64
+    public var validityRange: Range<Date>?
+    public var criticalOptions: [String]
+    public var extensions: [String]
+    public var signingKey: PublicKey
+
+    public init(
+        type: OpenSSHCertificate.CertificateType,
+        name: String,
+        data: Data,
+        publicKey: PublicKey,
+        principals: [String],
+        keyID: String,
+        serial: UInt64,
+        validityRange: Range<Date>? = nil,
+        criticalOptions: [String],
+        extensions: [String],
+        signingKey: PublicKey,
+    ) {
+        self.type = type
+        self.name = name
+        self.data = data
+        self.publicKey = publicKey
+        self.principals = principals
+        self.keyID = keyID
+        self.serial = serial
+        self.validityRange = validityRange
+        self.criticalOptions = criticalOptions
+        self.extensions = extensions
+        self.signingKey = signingKey
+    }
+
+    public var debugDescription: String {
+        "OpenSSH Certificate \(name, default: "Unnamed"): \(data.formatted(.hex()))"
+    }
+
+}
+
+extension OpenSSHCertificate {
+
+    public enum CertificateType: String, Sendable, Codable {
+        case ecdsa256 = "ecdsa-sha2-nistp256-cert-v01@openssh.com"
+        case ecdsa384 = "ecdsa-sha2-nistp384-cert-v01@openssh.com"
+        case nistp521 = "ecdsa-sha2-nistp521-cert-v01@openssh.com"
+
+        public var keyIdentifier: String {
+            rawValue.replacingOccurrences(of: "-cert-v01@openssh.com", with: "")
+        }
+
+    }
+
+}
+
+extension OpenSSHCertificate {
+
+    public struct PublicKey: Hashable, Sendable, Codable {
+
+        public let keyType: String
+        public let curveName: String
+        public let data: Data
+
+        public init(keyType: String, curveName: String, data: Data) {
+            self.keyType = keyType
+            self.curveName = curveName
+            self.data = data
+        }
+
+    }
+
+}
--- a/Sources/Packages/Sources/Common/URLs.swift
+++ b/Sources/Packages/Sources/Common/URLs.swift
@@ -1,5 +1,6 @@
 import Foundation
 import SSHProtocolKit
+import CertificateKit
 import SecretKit

 extension URL {
@@ -20,6 +21,10 @@ extension URL {
        agentHomeURL.appending(component: "PublicKeys")
    }

+    public static var certificatesDirectory: URL {
+        agentHomeURL.appending(component: "Certificates")
+    }
+
    /// The path for a Secret's public key.
    /// - Parameter secret: The Secret to return the path for.
    /// - Returns: The path to the Secret's public key.
@@ -30,6 +35,14 @@ extension URL {
        return directory.appending(component: "\(minimalHex).pub").path()
    }

+    /// The path for a certificate.
+    /// - Parameter certificate: The Certificate to return the path for.
+    /// - Returns: The path to the Certificate.
+    /// - Warning: This method returning a path does not imply that a certificate has been written to disk already. This method only describes where it will be written to.
+    public static func certificatePath(for certificateID: String, in directory: URL) -> String {
+        return directory.appending(component: "\(certificateID)-cert.pub").path()
+    }
+
 }

 extension String {
--- a/Sources/Packages/Sources/Formatters/Data+Hex.swift
+++ b/Sources/Packages/Sources/Formatters/Data+Hex.swift
@@ -0,0 +1,74 @@
+import Foundation
+import CryptoKit
+
+public struct HexDataStyle<SequenceType: Sequence>: Hashable, Codable {
+
+    let separator: String
+
+    public init(separator: String) {
+        self.separator = separator
+    }
+
+}
+
+extension HexDataStyle: FormatStyle where SequenceType.Element == UInt8 {
+
+    public func format(_ value: SequenceType) -> String {
+        value
+            .compactMap { ("0" + String($0, radix: 16, uppercase: false)).suffix(2) }
+            .joined(separator: separator)
+    }
+
+}
+
+extension FormatStyle where Self == HexDataStyle<Data> {
+
+    public static func hex(separator: String = "") -> HexDataStyle<Data> {
+        HexDataStyle(separator: separator)
+    }
+
+}
+
+extension FormatStyle where Self == HexDataStyle<Insecure.MD5Digest> {
+
+    public static func hex(separator: String = ":") -> HexDataStyle<Insecure.MD5Digest> {
+        HexDataStyle(separator: separator)
+    }
+
+}
+
+public struct Base64DataStyle<SequenceType: Sequence>: Hashable, Codable {
+
+    private let stripPadding: Bool
+
+    public init(stripPadding: Bool) {
+        self.stripPadding = stripPadding
+    }
+
+}
+
+extension Base64DataStyle: FormatStyle where SequenceType.Element == UInt8 {
+
+    public func format(_ value: SequenceType) -> String {
+        let base64 = Data(value).base64EncodedString()
+        let paddingRange = base64.index(base64.endIndex, offsetBy: -2)..<base64.endIndex
+        return base64.replacingOccurrences(of: "=", with: "", range: paddingRange)
+    }
+
+}
+
+extension FormatStyle where Self == Base64DataStyle<Data> {
+
+    public static func base64(stripPadding: Bool) -> Base64DataStyle<Data> {
+        Base64DataStyle(stripPadding: stripPadding)
+    }
+
+}
+
+extension FormatStyle where Self == Base64DataStyle<SHA256.Digest> {
+
+    public static func base64(stripPadding: Bool) -> Base64DataStyle<SHA256.Digest> {
+        Base64DataStyle(stripPadding: stripPadding)
+    }
+
+}
--- a/Sources/Packages/Sources/SSHProtocolKit/Data+Hex.swift
+++ b/Sources/Packages/Sources/SSHProtocolKit/Data+Hex.swift
@@ -1,37 +0,0 @@
-import Foundation
-import CryptoKit
-
-public struct HexDataStyle<SequenceType: Sequence>: Hashable, Codable {
-
-    let separator: String
-
-    public init(separator: String) {
-        self.separator = separator
-    }
-
-}
-
-extension HexDataStyle: FormatStyle where SequenceType.Element == UInt8 {
-
-    public func format(_ value: SequenceType) -> String {
-        value
-            .compactMap { ("0" + String($0, radix: 16, uppercase: false)).suffix(2) }
-            .joined(separator: separator)
-    }
-
-}
-
-extension FormatStyle where Self == HexDataStyle<Data> {
-
-    public static func hex(separator: String = "") -> HexDataStyle<Data> {
-        HexDataStyle(separator: separator)
-    }
-
-}
-extension FormatStyle where Self == HexDataStyle<Insecure.MD5Digest> {
-
-    public static func hex(separator: String = ":") -> HexDataStyle<Insecure.MD5Digest> {
-        HexDataStyle(separator: separator)
-    }
-
-}
--- a/Sources/Packages/Sources/SSHProtocolKit/OpenSSHCertficateWriter.swift
+++ b/Sources/Packages/Sources/SSHProtocolKit/OpenSSHCertficateWriter.swift
@@ -0,0 +1,30 @@
+import Foundation
+import CryptoKit
+import CertificateKit
+import Formatters
+
+/// Generates OpenSSH representations of Certificates.
+public struct OpenSSHCertificateWriter: Sendable {
+
+    /// Initializes the writer.
+    public init() {
+    }
+
+    /// Generates an OpenSSH data payload identifying the certificate.
+    /// - Returns: OpenSSH data payload identifying the certificate.
+    public func data(publicKey: OpenSSHCertificate.PublicKey) -> Data {
+        // https://datatracker.ietf.org/doc/html/rfc5656#section-3.1
+        publicKey.keyType.lengthAndData +
+        publicKey.curveName.lengthAndData +
+        publicKey.data.lengthAndData
+    }
+
+    /// Generates an OpenSSH SHA256 fingerprint string.
+    /// - Returns: OpenSSH SHA256 fingerprint string.
+    public func openSSHSHA256KeyFingerprint(publicKey: OpenSSHCertificate.PublicKey) -> String {
+        // OpenSSL format seems to strip the padding at the end.
+        let cleaned = SHA256.hash(data: data(publicKey: publicKey)).formatted(.base64(stripPadding: true))
+        return "SHA256:\(cleaned)"
+    }
+
+}
--- a/Sources/Packages/Sources/SSHProtocolKit/OpenSSHCertificateParser.swift
+++ b/Sources/Packages/Sources/SSHProtocolKit/OpenSSHCertificateParser.swift
@@ -0,0 +1,95 @@
+import Foundation
+import CertificateKit
+
+public protocol OpenSSHCertificateParserProtocol {
+    func parse(data: Data) async throws -> OpenSSHCertificate
+}
+
+public struct OpenSSHCertificateParser: OpenSSHCertificateParserProtocol, Sendable {
+
+    public init() {
+        assert(Bundle.main.bundleURL.pathExtension == "xpc" || ProcessInfo.processInfo.processName == "xctest", "Potentially unsafe parsing code should run in an XPC service")
+    }
+
+    public func parse(data: Data) throws(OpenSSHCertificateError) -> OpenSSHCertificate {
+        let string = String(decoding: data, as: UTF8.self)
+        var elements = string
+            .trimmingCharacters(in: .whitespacesAndNewlines)
+            .components(separatedBy: " ")
+        guard elements.count >= 2 else {
+            throw OpenSSHCertificateError.parsingFailed
+        }
+        let typeString = elements.removeFirst()
+        guard let type = OpenSSHCertificate.CertificateType(rawValue: typeString) else { throw .unsupportedType }
+        let encodedKey = elements.removeFirst()
+        guard let decoded = Data(base64Encoded: encodedKey)  else {
+            throw OpenSSHCertificateError.parsingFailed
+        }
+        let comment = elements.first
+        do {
+            let dataParser = OpenSSHReader(data: decoded)
+            let publicKeyType = try dataParser.readNextChunkAsString() // Theoretically the same as typeString, but
+                .replacingOccurrences(of: "-cert-v01@openssh.com", with: "")
+            _ = try dataParser.readNextChunk() // Nonce
+            let publicKeyCurveName = try dataParser.readNextChunkAsString()
+            let publicKeyData = try dataParser.readNextChunk()
+            let publicKey = OpenSSHCertificate.PublicKey(keyType: publicKeyType, curveName: publicKeyCurveName, data: publicKeyData)
+            let serialNumber = try dataParser.readNextBytes(as: UInt64.self, convertEndianness: true)
+            let role = try dataParser.readNextBytes(as: UInt32.self, convertEndianness: true)
+            _ = role
+            let keyIdentifier = try dataParser.readNextChunkAsString()
+            let principalsReader = try dataParser.readNextChunkAsSubReader()
+            var principals: [String] = []
+            while !principalsReader.done {
+                try principals.append(principalsReader.readNextChunkAsString())
+            }
+            let validAfter = try dataParser.readNextBytes(as: UInt64.self, convertEndianness: true)
+            let validBefore = try dataParser.readNextBytes(as: UInt64.self, convertEndianness: true)
+            let validityRange = Date(timeIntervalSince1970: TimeInterval(validAfter))..<Date(timeIntervalSince1970: TimeInterval(validBefore))
+            let criticalOptionsReader = try dataParser.readNextChunkAsSubReader()
+            var criticalOptions: [String] = []
+            while !criticalOptionsReader.done {
+                let next = try criticalOptionsReader.readNextChunkAsString()
+                if !next.isEmpty {
+                    criticalOptions.append(next)
+                }
+            }
+            let extensionsReader = try dataParser.readNextChunkAsSubReader()
+            var extensions: [String] = []
+            while !extensionsReader.done {
+                let next = try extensionsReader.readNextChunkAsString()
+                if !next.isEmpty {
+                    extensions.append(next)
+                }
+            }
+            _ = try dataParser.readNextChunk() // reserved
+            let signingKeyReader = try dataParser.readNextChunkAsSubReader()
+            let signingKeyType = try signingKeyReader.readNextChunkAsString()
+            let signingKeyCurveName = try signingKeyReader.readNextChunkAsString()
+            let signingKeyData = try signingKeyReader.readNextChunk()
+            let signingKey = OpenSSHCertificate.PublicKey(keyType: signingKeyType, curveName: signingKeyCurveName, data: signingKeyData)
+
+            return OpenSSHCertificate(
+                type: type,
+                name: comment ?? keyIdentifier,
+                data: decoded,
+                publicKey: publicKey,
+                principals: principals,
+                keyID: keyIdentifier,
+                serial: serialNumber,
+                validityRange: validityRange,
+                criticalOptions: criticalOptions,
+                extensions: extensions,
+                signingKey: signingKey,
+            )
+        } catch {
+            throw .parsingFailed
+        }
+    }
+
+}
+
+public enum OpenSSHCertificateError: Error, Codable {
+    case unsupportedType
+    case parsingFailed
+}
--- a/Sources/Packages/Sources/SSHProtocolKit/OpenSSHPublicKeyWriter.swift
+++ b/Sources/Packages/Sources/SSHProtocolKit/OpenSSHPublicKeyWriter.swift
@@ -41,9 +41,7 @@ public struct OpenSSHPublicKeyWriter: Sendable {
    /// - Returns: OpenSSH SHA256 fingerprint string.
    public func openSSHSHA256Fingerprint<SecretType: Secret>(secret: SecretType) -> String {
        // OpenSSL format seems to strip the padding at the end.
-        let base64 = Data(SHA256.hash(data: data(secret: secret))).base64EncodedString()
-        let paddingRange = base64.index(base64.endIndex, offsetBy: -2)..<base64.endIndex
-        let cleaned = base64.replacingOccurrences(of: "=", with: "", range: paddingRange)
+        let cleaned = SHA256.hash(data: data(secret: secret)).formatted(.base64(stripPadding: true))
        return "SHA256:\(cleaned)"
    }

--- a/Sources/Packages/Sources/SSHProtocolKit/OpenSSHReader.swift
+++ b/Sources/Packages/Sources/SSHProtocolKit/OpenSSHReader.swift
@@ -10,6 +10,9 @@ public final class OpenSSHReader {
    /// - Parameter data: The data to read.
    public init(data: Data) {
        remaining = Data(data)
+        if remaining.count == 0 {
+            done = true
+        }
    }

    /// Reads the next chunk of data from the playload.
--- a/Sources/Packages/Sources/SSHProtocolKit/SSHAgentInputParser.swift
+++ b/Sources/Packages/Sources/SSHProtocolKit/SSHAgentInputParser.swift
@@ -1,7 +1,7 @@
 import Foundation
 import OSLog
 import SecretKit
-import SSHProtocolKit
+import CertificateKit

 public protocol SSHAgentInputParserProtocol {

@@ -14,7 +14,7 @@ public struct SSHAgentInputParser: SSHAgentInputParserProtocol {
    private let logger = Logger(subsystem: "com.maxgoedjen.secretive.secretagent", category: "InputParser")

    public init() {
-
+        assert(Bundle.main.bundleURL.pathExtension == "xpc" || ProcessInfo.processInfo.processName == "xctest", "Potentially unsafe parsing code should run in an XPC service")
    }

    public func parse(data: Data) throws(AgentParsingError) -> SSHAgent.Request {
@@ -75,21 +75,16 @@ extension SSHAgentInputParser {
    func certificatePublicKeyBlob(from hash: Data) -> Data? {
        let reader = OpenSSHReader(data: hash)
        do {
-            let certType = String(decoding: try reader.readNextChunk(), as: UTF8.self)
-            switch certType {
-            case "ecdsa-sha2-nistp256-cert-v01@openssh.com",
-                "ecdsa-sha2-nistp384-cert-v01@openssh.com",
-                "ecdsa-sha2-nistp521-cert-v01@openssh.com":
-                _ = try reader.readNextChunk() // nonce
-                let curveIdentifier = try reader.readNextChunk()
-                let publicKey = try reader.readNextChunk()
-                let openSSHIdentifier = certType.replacingOccurrences(of: "-cert-v01@openssh.com", with: "")
-                return openSSHIdentifier.lengthAndData +
-                curveIdentifier.lengthAndData +
+            let certType = try reader.readNextChunkAsString()
+            guard let certType = OpenSSHCertificate.CertificateType(rawValue: certType) else { return nil }
+            _ = try reader.readNextChunk() // nonce
+            let curveIdentifier = try reader.readNextChunk()
+            let publicKey = try reader.readNextChunk()
+            let openSSHIdentifier = certType.keyIdentifier
+            return openSSHIdentifier.lengthAndData +
+            curveIdentifier.lengthAndData +
                publicKey.lengthAndData
-            default:
-                return nil
-            }
+            
        } catch {
            return nil
        }
--- a/Sources/Packages/Sources/SecretAgentKit/Agent.swift
+++ b/Sources/Packages/Sources/SecretAgentKit/Agent.swift
@@ -2,6 +2,7 @@ import Foundation
 import CryptoKit
 import OSLog
 import SecretKit
+import CertificateKit
 import AppKit
 import SSHProtocolKit

@@ -9,25 +10,32 @@ import SSHProtocolKit
 public final class Agent: Sendable {

    private let storeList: SecretStoreList
+<<<<<<< HEAD
    private let authenticationHandler: AuthenticationHandler
+=======
+    private let certificateStore: CertificateStore
+>>>>>>> main
    private let witness: SigningWitness?
    private let publicKeyWriter = OpenSSHPublicKeyWriter()
    private let signatureWriter = OpenSSHSignatureWriter()
-    private let certificateHandler = OpenSSHCertificateHandler()
    private let logger = Logger(subsystem: "com.maxgoedjen.secretive.secretagent", category: "Agent")

    /// Initializes an agent with a store list and a witness.
    /// - Parameters:
    ///   - storeList: The `SecretStoreList` to make available.
    ///   - witness: A witness to notify of requests.
+<<<<<<< HEAD
    public init(storeList: SecretStoreList, authenticationHandler: AuthenticationHandler, witness: SigningWitness? = nil) {
        logger.debug("Agent is running")
        self.storeList = storeList
        self.authenticationHandler = authenticationHandler
+=======
+    public init(storeList: SecretStoreList, certificateStore: CertificateStore, witness: SigningWitness? = nil) {
+        logger.debug("Agent is running")
+        self.storeList = storeList
+        self.certificateStore = certificateStore
+>>>>>>> main
        self.witness = witness
-        Task { @MainActor in
-            await certificateHandler.reloadCertificates(for: storeList.allSecrets)
-        }
    }
    
 }
@@ -70,7 +78,6 @@ extension Agent {
    /// - Returns: An OpenSSH formatted Data payload listing the identities available for signing operations.
    func identities() async -> Data {
        let secrets = await storeList.allSecrets
-        await certificateHandler.reloadCertificates(for: secrets)
        var count = 0
        var keyData = Data()

@@ -79,10 +86,9 @@ extension Agent {
            keyData.append(keyBlob.lengthAndData)
            keyData.append(publicKeyWriter.comment(secret: secret).lengthAndData)
            count += 1
-
-            if let (certificateData, name) = try? await certificateHandler.keyBlobAndName(for: secret) {
-                keyData.append(certificateData.lengthAndData)
-                keyData.append(name.lengthAndData)
+            for certificate in await certificateStore.certificates(for: secret) {
+                keyData.append(certificate.data.lengthAndData)
+                keyData.append(certificate.name.lengthAndData)
                count += 1
            }
        }
@@ -99,7 +105,7 @@ extension Agent {
    /// - Returns: An OpenSSH formatted Data payload containing the signed data response.
    func sign(data: Data, keyBlob: Data, provenance: SigningRequestProvenance) async throws -> Data {
        guard let (secret, store) = await secret(matching: keyBlob) else {
-            let keyBlobHex = keyBlob.compactMap { ("0" + String($0, radix: 16, uppercase: false)).suffix(2) }.joined()
+            let keyBlobHex = keyBlob.formatted(.hex())
            logger.debug("Agent did not have a key matching \(keyBlobHex)")
            throw NoMatchingKeyError()
        }
--- a/Sources/Packages/Sources/SecretAgentKit/OpenSSHCertificateHandler.swift
+++ b/Sources/Packages/Sources/SecretAgentKit/OpenSSHCertificateHandler.swift
@@ -1,89 +0,0 @@
-import Foundation
-import OSLog
-import SecretKit
-import SSHProtocolKit
-
-/// Manages storage and lookup for OpenSSH certificates.
-public actor OpenSSHCertificateHandler: Sendable {
-
-    private let publicKeyFileStoreController = PublicKeyFileStoreController(directory: URL.publicKeyDirectory)
-    private let logger = Logger(subsystem: "com.maxgoedjen.secretive.secretagent", category: "OpenSSHCertificateHandler")
-    private let writer = OpenSSHPublicKeyWriter()
-    private var keyBlobsAndNames: [AnySecret: (Data, Data)] = [:]
-
-    /// Initializes an OpenSSHCertificateHandler.
-    public init() {
-    }
-
-    /// Reloads any certificates in the PublicKeys folder.
-    /// - Parameter secrets: the secrets to look up corresponding certificates for.
-    public func reloadCertificates(for secrets: [AnySecret]) {
-        guard publicKeyFileStoreController.hasAnyCertificates else {
-            logger.log("No certificates, short circuiting")
-            return
-        }
-        keyBlobsAndNames = secrets.reduce(into: [:]) { partialResult, next in
-            partialResult[next] = try? loadKeyblobAndName(for: next)
-        }
-    }
-
-    /// Attempts to find an OpenSSH Certificate  that corresponds to a ``Secret``
-    /// - Parameter secret: The secret to search for a certificate with
-    /// - Returns: A (``Data``, ``Data``) tuple containing the certificate and certificate name, respectively.
-    public func keyBlobAndName<SecretType: Secret>(for secret: SecretType) throws -> (Data, Data)? {
-        keyBlobsAndNames[AnySecret(secret)]
-    }
-    
-    /// Attempts to find an OpenSSH Certificate  that corresponds to a ``Secret``
-    /// - Parameter secret: The secret to search for a certificate with
-    /// - Returns: A (``Data``, ``Data``) tuple containing the certificate and certificate name, respectively.
-    private func loadKeyblobAndName<SecretType: Secret>(for secret: SecretType) throws -> (Data, Data)? {
-        let certificatePath = publicKeyFileStoreController.sshCertificatePath(for: secret)
-        guard FileManager.default.fileExists(atPath: certificatePath) else {
-            return nil
-        }
-
-        logger.debug("Found certificate for \(secret.name)")
-        let certContent = try String(contentsOfFile:certificatePath, encoding: .utf8)
-        let certElements = certContent.trimmingCharacters(in: .whitespacesAndNewlines).components(separatedBy: " ")
-
-        guard certElements.count >= 2 else {
-            logger.warning("Certificate found for \(secret.name) but failed to load")
-            throw OpenSSHCertificateError.parsingFailed
-        }
-        guard let certDecoded = Data(base64Encoded: certElements[1] as String)  else {
-            logger.warning("Certificate found for \(secret.name) but failed to decode base64 key")
-            throw OpenSSHCertificateError.parsingFailed
-        }
-
-        if certElements.count >= 3 {
-            let certName = Data(certElements[2].utf8)
-            return (certDecoded, certName)
-        }
-        let certName = Data(secret.name.utf8)
-        logger.info("Certificate for \(secret.name) does not have a name tag, using secret name instead")
-        return (certDecoded, certName)
-    }
-
-}
-
-extension OpenSSHCertificateHandler {
-
-    enum OpenSSHCertificateError: LocalizedError {
-        case unsupportedType
-        case parsingFailed
-        case doesNotExist
-
-        public var errorDescription: String? {
-            switch self {
-            case .unsupportedType:
-                return "The key type was unsupported"
-            case .parsingFailed:
-                return "Failed to properly parse the SSH certificate"
-            case .doesNotExist:
-                return "Certificate does not exist"
-            }
-        }
-    }
-
-}
--- a/Sources/Packages/Sources/SecretAgentKit/PublicKeyStandinFileController.swift
+++ b/Sources/Packages/Sources/SecretAgentKit/PublicKeyStandinFileController.swift
@@ -2,18 +2,21 @@ import Foundation
 import OSLog
 import SecretKit
 import SSHProtocolKit
+import CertificateKit
 import Common

 /// Controller responsible for writing public keys to disk, so that they're easily accessible by scripts.
 public final class PublicKeyFileStoreController: Sendable {

    private let logger = Logger(subsystem: "com.maxgoedjen.secretive.secretagent", category: "PublicKeyFileStoreController")
-    private let directory: URL
+    private let publicKeysURL: URL
+    private let certificatesURL: URL
    private let keyWriter = OpenSSHPublicKeyWriter()

    /// Initializes a PublicKeyFileStoreController.
-    public init(directory: URL) {
-        self.directory = directory
+    public init(publicKeysURL: URL, certificatesURL: URL) {
+        self.publicKeysURL = publicKeysURL
+        self.certificatesURL = certificatesURL
    }

    /// Writes out the keys specified to disk.
@@ -22,10 +25,10 @@ public final class PublicKeyFileStoreController: Sendable {
    public func generatePublicKeys(for secrets: [AnySecret], clear: Bool = false) throws {
        logger.log("Writing public keys to disk")
        if clear {
-            let validPaths = Set(secrets.map { URL.publicKeyPath(for: $0, in: directory) })
-                .union(Set(secrets.map { sshCertificatePath(for: $0) }))
-            let contentsOfDirectory = (try? FileManager.default.contentsOfDirectory(atPath: directory.path())) ?? []
-            let fullPathContents = contentsOfDirectory.map { directory.appending(path: $0).path() }
+            let validPaths = Set(secrets.map { URL.publicKeyPath(for: $0, in: publicKeysURL) })
+                .union(Set(secrets.map { legacySSHCertificatePath(for: $0) }))
+            let contentsOfDirectory = (try? FileManager.default.contentsOfDirectory(atPath: publicKeysURL.path())) ?? []
+            let fullPathContents = contentsOfDirectory.map { publicKeysURL.appending(path: $0).path() }

            let untracked = Set(fullPathContents)
                .subtracting(validPaths)
@@ -34,35 +37,47 @@ public final class PublicKeyFileStoreController: Sendable {
                try? FileManager.default.removeItem(at: URL(string: path)!)
            }
        }
-        try? FileManager.default.createDirectory(at: directory, withIntermediateDirectories: false, attributes: nil)
+        try? FileManager.default.createDirectory(at: publicKeysURL, withIntermediateDirectories: false, attributes: nil)
        for secret in secrets {
-            let path = URL.publicKeyPath(for: secret, in: directory)
+            let path = URL.publicKeyPath(for: secret, in: publicKeysURL)
            let data = Data(keyWriter.openSSHString(secret: secret).utf8)
            FileManager.default.createFile(atPath: path, contents: data, attributes: nil)
        }
        logger.log("Finished writing public keys")
    }

+    /// Writes out the certificates specified to disk.
+    /// - Parameter certificates: The Secrets to generate keys for.
+    /// - Parameter clear: Whether or not any untracked files in the directory should be removed.
+    public func generateCertificates(for certificates: [Certificate], clear: Bool = false) throws {
+        logger.log("Writing certificates to disk")
+        if clear {
+            let validPaths = Set(certificates.map { URL.certificatePath(for: $0.id, in: certificatesURL) })
+            let contentsOfDirectory = (try? FileManager.default.contentsOfDirectory(atPath: certificatesURL.path())) ?? []
+            let fullPathContents = contentsOfDirectory.map { certificatesURL.appending(path: $0).path() }

-    /// Short-circuit check to ship enumerating a bunch of paths if there's nothing in the cert directory.
-    public var hasAnyCertificates: Bool {
-        do {
-            return try FileManager.default
-                .contentsOfDirectory(atPath: directory.path())
-                .filter { $0.hasSuffix("-cert.pub") }
-                .isEmpty == false
-        } catch {
-            return false
+            let untracked = Set(fullPathContents)
+                .subtracting(validPaths)
+            for path in untracked {
+                // string instead of fileURLWithPath since we're already using fileURL format.
+                try? FileManager.default.removeItem(at: URL(string: path)!)
+            }
        }
+        try? FileManager.default.createDirectory(at: certificatesURL, withIntermediateDirectories: false, attributes: nil)
+        for certificate in certificates {
+            let path = URL.certificatePath(for: certificate.id, in: certificatesURL)
+            FileManager.default.createFile(atPath: path, contents: certificate.rawData, attributes: nil)
+        }
+        logger.log("Finished writing certificates")
    }

    /// The path for a Secret's SSH Certificate public key.
    /// - Parameter secret: The Secret to return the path for.
    /// - Returns: The path to the SSH Certificate public key.
    /// - Warning: This method returning a path does not imply that a key has a SSH certificates. This method only describes where it will be.
-    public func sshCertificatePath<SecretType: Secret>(for secret: SecretType) -> String {
+    private func legacySSHCertificatePath<SecretType: Secret>(for secret: SecretType) -> String {
        let minimalHex = keyWriter.openSSHMD5Fingerprint(secret: secret).replacingOccurrences(of: ":", with: "")
-        return directory.appending(component: "\(minimalHex)-cert.pub").path()
+        return publicKeysURL.appending(component: "\(minimalHex).pub").path()
    }

 }
--- a/Sources/Packages/Sources/SharedXPCServices/CertificateMigrator.swift
+++ b/Sources/Packages/Sources/SharedXPCServices/CertificateMigrator.swift
@@ -0,0 +1,53 @@
+import Foundation
+import Security
+import CryptoTokenKit
+import CryptoKit
+import os
+import SSHProtocolKit
+import CertificateKit
+
+public struct CertificateMigrator {
+
+    private let logger = Logger(subsystem: "com.maxgoedjen.secretive.migration", category: "CertificateKitMigrator")
+    private let publicKeysDirectory: URL
+    private let certificatesDirectory: URL
+    private let certificateStore: CertificateStore
+
+    /// Initializes a PublicKeyFileStoreController.
+    public init(homeDirectory: URL, certificateStore: CertificateStore) {
+        publicKeysDirectory = homeDirectory.appending(component: "PublicKeys")
+        certificatesDirectory = homeDirectory.appending(component: "Certificates")
+        self.certificateStore = certificateStore
+    }
+
+    @MainActor public func migrate() throws {
+        try migrate(directory: publicKeysDirectory)
+        try migrate(directory: certificatesDirectory)
+    }
+
+    @MainActor public func migrate(directory: URL) throws {
+        let fileCerts = try FileManager.default
+            .contentsOfDirectory(atPath: directory.path())
+            .filter { $0.hasSuffix("-cert.pub") }
+        Task {
+            for path in fileCerts {
+                do {
+                    let url = directory.appending(component: path)
+                    let data = try Data(contentsOf: url)
+                    let parser = try await XPCCertificateParser()
+                    let cert = try await parser.parse(data: data)
+                    try certificateStore.save(certificate: Certificate(openSSHCertificate: cert, rawData: data))
+                    do {
+                        try FileManager.default.removeItem(at: url)
+                    } catch {
+                        logger.error("Failed to delete successfully migrated cert: \(path)")
+                    }
+                } catch {
+                    logger.error("Failed to migrate cert: \(path)")
+                }
+            }
+
+        }
+    }
+
+}
--- a/Sources/Packages/Sources/SharedXPCServices/XPCCertificateParser.swift
+++ b/Sources/Packages/Sources/SharedXPCServices/XPCCertificateParser.swift
@@ -0,0 +1,29 @@
+import Foundation
+import OSLog
+import SSHProtocolKit
+import CertificateKit
+import XPCWrappers
+
+/// Delegates all agent input parsing to an XPC service which wraps OpenSSH
+public final class XPCCertificateParser: OpenSSHCertificateParserProtocol {
+
+    private let logger = Logger(subsystem: "com.maxgoedjen.secretive", category: "XPCCertificateParser")
+    private let session: XPCTypedSession<OpenSSHCertificate, OpenSSHCertificateError>
+
+    public init() async throws {
+        logger.debug("Creating XPCCertificateParser")
+        session = try await XPCTypedSession(serviceName: "com.maxgoedjen.Secretive.SecretiveCertificateParser", warmup: true)
+        logger.debug("XPCCertificateParser is warmed up.")
+    }
+
+    public func parse(data: Data) async throws -> OpenSSHCertificate {
+        logger.debug("Parsing input")
+        defer { logger.debug("Parsed input") }
+        return try await session.send(data)
+    }
+
+    deinit {
+        session.complete()
+    }
+
+}
--- a/Sources/Packages/Tests/SecretAgentKitTests/AgentTests.swift
+++ b/Sources/Packages/Tests/SecretAgentKitTests/AgentTests.swift
@@ -1,16 +1,17 @@
 import Foundation
 import Testing
 import CryptoKit
+import CertificateKit
@testable import SSHProtocolKit
@testable import SecretKit
@testable import SecretAgentKit

-@Suite struct AgentTests {
+@Suite @MainActor struct AgentTests {

    // MARK: Identity Listing

    @Test func emptyStores() async throws {
-        let agent = Agent(storeList: SecretStoreList())
+        let agent = Agent(storeList: SecretStoreList(), certificateStore: CertificateStore())
        let request = try SSHAgentInputParser().parse(data: Constants.Requests.requestIdentities)
        let response = await agent.handle(request: request, provenance: .test)
        #expect(response == Constants.Responses.requestIdentitiesEmpty)
@@ -18,7 +19,7 @@ import CryptoKit

    @Test func identitiesList() async throws {
        let list = await storeList(with: [Constants.Secrets.ecdsa256Secret, Constants.Secrets.ecdsa384Secret])
-        let agent = Agent(storeList: list)
+        let agent = Agent(storeList: list, certificateStore: CertificateStore())
        let request = try SSHAgentInputParser().parse(data: Constants.Requests.requestIdentities)
        let response = await agent.handle(request: request, provenance: .test)

@@ -32,7 +33,7 @@ import CryptoKit

    @Test func noMatchingIdentities() async throws {
        let list = await storeList(with: [Constants.Secrets.ecdsa256Secret, Constants.Secrets.ecdsa384Secret])
-        let agent = Agent(storeList: list)
+        let agent = Agent(storeList: list, certificateStore: CertificateStore())
        let request = try SSHAgentInputParser().parse(data: Constants.Requests.requestSignatureWithNoneMatching)
        let response = await agent.handle(request: request, provenance: .test)
        #expect(response == Constants.Responses.requestFailure)
@@ -42,7 +43,7 @@ import CryptoKit
        let request = try SSHAgentInputParser().parse(data: Constants.Requests.requestSignature)
        guard case SSHAgent.Request.signRequest(let context) = request else { return }
        let list = await storeList(with: [Constants.Secrets.ecdsa256Secret, Constants.Secrets.ecdsa384Secret])
-        let agent = Agent(storeList: list)
+        let agent = Agent(storeList: list, certificateStore: CertificateStore())
        let response = await agent.handle(request: request, provenance: .test)
        let responseReader = OpenSSHReader(data: response)
        let length = try responseReader.readNextBytes(as: UInt32.self)
@@ -77,7 +78,7 @@ import CryptoKit
        let witness = StubWitness(speakNow: { _,_  in
            return true
        }, witness: { _, _ in })
-        let agent = Agent(storeList: list, witness: witness)
+        let agent = Agent(storeList: list, certificateStore: CertificateStore(), witness: witness)
        let response = await agent.handle(request: .signRequest(.empty), provenance: .test)
        #expect(response == Constants.Responses.requestFailure)
    }
@@ -90,7 +91,7 @@ import CryptoKit
        }, witness: { _, trace in
            witnessed = true
        })
-        let agent = Agent(storeList: list, witness: witness)
+        let agent = Agent(storeList: list, certificateStore: CertificateStore(), witness: witness)
        let request = try SSHAgentInputParser().parse(data: Constants.Requests.requestSignature)
        _ = await agent.handle(request: request, provenance: .test)
        #expect(witnessed)
@@ -106,7 +107,7 @@ import CryptoKit
        }, witness: { _, trace in
            witnessTrace = trace
        })
-        let agent = Agent(storeList: list, witness: witness)
+        let agent = Agent(storeList: list, certificateStore: CertificateStore(), witness: witness)
        let request = try SSHAgentInputParser().parse(data: Constants.Requests.requestSignature)
        _ = await agent.handle(request: request, provenance: .test)
        #expect(witnessTrace == speakNowTrace)
@@ -117,9 +118,9 @@ import CryptoKit

    @Test func signatureException() async throws {
        let list = await storeList(with: [Constants.Secrets.ecdsa256Secret, Constants.Secrets.ecdsa384Secret])
-        let store = await list.stores.first?.base as! Stub.Store
+        let store = list.stores.first?.base as! Stub.Store
        store.shouldThrow = true
-        let agent = Agent(storeList: list)
+        let agent = Agent(storeList: list, certificateStore: CertificateStore())
        let request = try SSHAgentInputParser().parse(data: Constants.Requests.requestSignature)
        let response = await agent.handle(request: request, provenance: .test)
        #expect(response == Constants.Responses.requestFailure)
@@ -128,7 +129,7 @@ import CryptoKit
    // MARK: Unsupported

    @Test func unhandledAdd() async throws {
-        let agent = Agent(storeList: SecretStoreList())
+        let agent = Agent(storeList: SecretStoreList(), certificateStore: CertificateStore())
        let response = await agent.handle(request: .addIdentity, provenance: .test)
        #expect(response == Constants.Responses.requestFailure)
    }
@@ -143,7 +144,7 @@ extension SigningRequestProvenance {

 extension AgentTests {

-    @MainActor func storeList(with secrets: [Stub.Secret]) async -> SecretStoreList {
+    func storeList(with secrets: [Stub.Secret]) async -> SecretStoreList {
        let store = Stub.Store()
        store.secrets.append(contentsOf: secrets)
        let storeList = SecretStoreList()
--- a/Sources/SecretAgent/AppDelegate.swift
+++ b/Sources/SecretAgent/AppDelegate.swift
@@ -0,0 +1,94 @@
+import Cocoa
+import OSLog
+import SecretKit
+import SecureEnclaveSecretKit
+import SmartCardSecretKit
+import SecretAgentKit
+import Brief
+import Observation
+import SSHProtocolKit
+import CertificateKit
+import Common
+import SwiftUI
+
+extension EnvironmentValues {
+
+    @MainActor fileprivate static let _certificateStore: CertificateStore = CertificateStore()
+
+    @MainActor var certificateStore: CertificateStore {
+        EnvironmentValues._certificateStore
+    }
+
+
+}
+@main
+class AppDelegate: NSObject, NSApplicationDelegate {
+
+    @MainActor private let storeList: SecretStoreList = {
+        let list = SecretStoreList()
+        let cryptoKit = SecureEnclave.Store()
+        let migrator = SecureEnclave.CryptoKitMigrator()
+        try? migrator.migrate(to: cryptoKit)
+        list.add(store: cryptoKit)
+        list.add(store: SmartCard.Store())
+        let certsMigrator = CertificateMigrator(homeDirectory: URL.homeDirectory, certificateStore: EnvironmentValues._certificateStore)
+        try? certsMigrator.migrate()
+        return list
+    }()
+    private let updater = Updater(checkOnLaunch: true)
+    private let notifier = Notifier()
+    private let publicKeyFileStoreController = PublicKeyFileStoreController(publicKeysURL: URL.publicKeyDirectory, certificatesURL: URL.certificatesDirectory)
+    @MainActor private lazy var agent: Agent = {
+        Agent(storeList: storeList, certificateStore: EnvironmentValues._certificateStore, witness: notifier)
+    }()
+    private lazy var socketController: SocketController = {
+        let path = URL.socketPath as String
+        return SocketController(path: path)
+    }()
+    private let logger = Logger(subsystem: "com.maxgoedjen.secretive.secretagent", category: "AppDelegate")
+
+    func applicationDidFinishLaunching(_ aNotification: Notification) {
+        logger.debug("SecretAgent finished launching")
+        Task {
+            for await session in socketController.sessions {
+                Task {
+                    let inputParser = try await XPCAgentInputParser()
+                    do {
+                        for await message in session.messages {
+                            let request = try await inputParser.parse(data: message)
+                            let agentResponse = await agent.handle(request: request, provenance: session.provenance)
+                            try session.write(agentResponse)
+                        }
+                    } catch {
+                        try session.close()
+                    }
+                }
+            }
+        }
+        Task {
+            for await _ in NotificationCenter.default.notifications(named: .secretStoreReloaded) {
+                try? publicKeyFileStoreController.generatePublicKeys(for: storeList.allSecrets, clear: true)
+            }
+        }
+        Task {
+            for await _ in NotificationCenter.default.notifications(named: .certificateStoreReloaded) {
+                try? publicKeyFileStoreController.generateCertificates(for: EnvironmentValues._certificateStore.certificates, clear: true)
+            }
+        }
+        try? publicKeyFileStoreController.generatePublicKeys(for: storeList.allSecrets, clear: true)
+        try? publicKeyFileStoreController.generateCertificates(for: EnvironmentValues._certificateStore.certificates, clear: true)
+        notifier.prompt()
+        _ = withObservationTracking {
+            updater.update
+        } onChange: { [updater, notifier] in
+            Task {
+                guard !updater.currentVersion.isTestBuild else { return }
+                await notifier.notify(update: updater.update!) { release in
+                    await updater.ignore(release: release)
+                }
+            }
+        }
+    }
+
+}
+
--- a/Sources/SecretAgent/CertificateMigrator.swift
+++ b/Sources/SecretAgent/CertificateMigrator.swift
@@ -0,0 +1,47 @@
+import Foundation
+import Security
+import CryptoTokenKit
+import CryptoKit
+import os
+import SSHProtocolKit
+import CertificateKit
+import SharedXPCServices
+
+public struct CertificateMigrator {
+
+    private let logger = Logger(subsystem: "com.maxgoedjen.secretive.migration", category: "CertificateKitMigrator")
+    private let directory: URL
+    private let certificateStore: CertificateStore
+
+    /// Initializes a PublicKeyFileStoreController.
+    public init(homeDirectory: URL, certificateStore: CertificateStore) {
+        directory = homeDirectory.appending(component: "PublicKeys")
+        self.certificateStore = certificateStore
+    }
+
+    @MainActor public func migrate() throws {
+        let fileCerts = try FileManager.default
+            .contentsOfDirectory(atPath: directory.path())
+            .filter { $0.hasSuffix("-cert.pub") }
+        Task {
+            for path in fileCerts {
+                do {
+                    let url = directory.appending(component: path)
+                    let data = try Data(contentsOf: url)
+                    let parser = try await XPCCertificateParser()
+                    let cert = try await parser.parse(data: data)
+                    try certificateStore.save(certificate: Certificate(openSSHCertificate: cert, rawData: data))
+                    do {
+                        try FileManager.default.removeItem(at: url)
+                    } catch {
+                        logger.error("Failed to delete successfully migrated cert: \(path)")
+                    }
+                } catch {
+                    logger.error("Failed to migrate cert: \(path)")
+                }
+            }
+
+        }
+    }
+
+}
--- a/Sources/SecretAgent/XPCInputParser.swift
+++ b/Sources/SecretAgent/XPCInputParser.swift
@@ -1,5 +1,6 @@
 import Foundation
-import SecretAgentKit
+import OSLog
+import SSHProtocolKit
 import Brief
 import XPCWrappers
 import OSLog
--- a/Sources/Secretive.xcodeproj/project.pbxproj
+++ b/Sources/Secretive.xcodeproj/project.pbxproj
@@ -32,6 +32,7 @@
 		504788F62E68206F00B4556F /* GettingStartedView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 504788F52E68206F00B4556F /* GettingStartedView.swift */; };
 		504789232E697DD300B4556F /* BoxBackgroundStyle.swift in Sources */ = {isa = PBXBuildFile; fileRef = 504789222E697DD300B4556F /* BoxBackgroundStyle.swift */; };
 		50571E0324393C2600F76F6C /* JustUpdatedChecker.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50571E0224393C2600F76F6C /* JustUpdatedChecker.swift */; };
+		505F5EF22FA9635700C45824 /* CertificateKit in Frameworks */ = {isa = PBXBuildFile; productRef = 505F5EF12FA9635700C45824 /* CertificateKit */; };
 		50617D8323FCE48E0099B055 /* App.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50617D8223FCE48E0099B055 /* App.swift */; };
 		50617D8523FCE48E0099B055 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50617D8423FCE48E0099B055 /* ContentView.swift */; };
 		50617D8A23FCE48E0099B055 /* Preview Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 50617D8923FCE48E0099B055 /* Preview Assets.xcassets */; };
@@ -72,6 +73,23 @@
 		50CF4ABC2E601B0F005588DC /* ActionButtonStyle.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50CF4ABB2E601B0F005588DC /* ActionButtonStyle.swift */; };
 		50E0145C2EDB9CDF00B121F1 /* Common in Frameworks */ = {isa = PBXBuildFile; productRef = 50E0145B2EDB9CDF00B121F1 /* Common */; };
 		50E0145E2EDB9CE400B121F1 /* Common in Frameworks */ = {isa = PBXBuildFile; productRef = 50E0145D2EDB9CE400B121F1 /* Common */; };
+		50E204E92FA9D12700402380 /* CertificateDetailView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E204E82FA9D12700402380 /* CertificateDetailView.swift */; };
+		50E204ED2FAA997F00402380 /* CertificateListItemView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E204EC2FAA997F00402380 /* CertificateListItemView.swift */; };
+		50E204EF2FAA9C1400402380 /* MultilineInfoView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E204EE2FAA9C1400402380 /* MultilineInfoView.swift */; };
+		50E2051D2FAAB81C00402380 /* SecretiveCertificateParser.xpc in Embed XPC Services */ = {isa = PBXBuildFile; fileRef = 50E205142FAAB81C00402380 /* SecretiveCertificateParser.xpc */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
+		50E205282FAAB82700402380 /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E205242FAAB82700402380 /* main.swift */; };
+		50E2052C2FAAB85000402380 /* SecretiveCertificateParser.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E2052B2FAAB85000402380 /* SecretiveCertificateParser.swift */; };
+		50E2052D2FAAB92000402380 /* SecretiveCertificateParser.xpc in Embed XPC Services */ = {isa = PBXBuildFile; fileRef = 50E205142FAAB81C00402380 /* SecretiveCertificateParser.xpc */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
+		50E205312FAAB95500402380 /* XPCWrappers in Frameworks */ = {isa = PBXBuildFile; productRef = 50E205302FAAB95500402380 /* XPCWrappers */; };
+		50E205332FAAB95A00402380 /* SSHProtocolKit in Frameworks */ = {isa = PBXBuildFile; productRef = 50E205322FAAB95A00402380 /* SSHProtocolKit */; };
+		50E205362FAABC6300402380 /* EditCertificateView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E205352FAABC6300402380 /* EditCertificateView.swift */; };
+		50E205372FAABC6300402380 /* DeleteCertificateView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E205342FAABC6300402380 /* DeleteCertificateView.swift */; };
+		50E205802FAB291E00402380 /* CertificateMigrator.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E2057F2FAB291E00402380 /* CertificateMigrator.swift */; };
+		50E205822FAB293B00402380 /* SharedXPCServices in Frameworks */ = {isa = PBXBuildFile; productRef = 50E205812FAB293B00402380 /* SharedXPCServices */; };
+		50E205842FAB296A00402380 /* SharedXPCServices in Frameworks */ = {isa = PBXBuildFile; productRef = 50E205832FAB296A00402380 /* SharedXPCServices */; };
+		50E205862FAC2EA000402380 /* Formatters in Frameworks */ = {isa = PBXBuildFile; productRef = 50E205852FAC2EA000402380 /* Formatters */; };
+		50E205882FAC2EAB00402380 /* Formatters in Frameworks */ = {isa = PBXBuildFile; productRef = 50E205872FAC2EAB00402380 /* Formatters */; };
+		50E2058A2FAC2EB600402380 /* Formatters in Frameworks */ = {isa = PBXBuildFile; productRef = 50E205892FAC2EB600402380 /* Formatters */; };
 		50E4C4532E73C78C00C73783 /* WindowBackgroundStyle.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E4C4522E73C78900C73783 /* WindowBackgroundStyle.swift */; };
 		50E4C4C32E7765DF00C73783 /* AboutView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E4C4C22E7765DF00C73783 /* AboutView.swift */; };
 		50E4C4C82E777E4200C73783 /* AppIcon.icon in Resources */ = {isa = PBXBuildFile; fileRef = 50E4C4C72E777E4200C73783 /* AppIcon.icon */; };
@@ -121,6 +139,20 @@
 			remoteGlobalIDString = 50692E4F2E6FF9D20043C7BB;
 			remoteInfo = SecretAgentInputParser;
 		};
+		50E2051B2FAAB81C00402380 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 50617D7723FCE48D0099B055 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 50E205132FAAB81C00402380;
+			remoteInfo = SecretAgentCertificateParser;
+		};
+		50E2052E2FAAB92000402380 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 50617D7723FCE48D0099B055 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 50E205132FAAB81C00402380;
+			remoteInfo = SecretiveCertificateParser;
+		};
 /* End PBXContainerItemProxy section */

 /* Begin PBXCopyFilesBuildPhase section */
@@ -130,6 +162,7 @@
 			dstPath = "$(CONTENTS_FOLDER_PATH)/XPCServices";
 			dstSubfolderSpec = 16;
 			files = (
+				50E2051D2FAAB81C00402380 /* SecretiveCertificateParser.xpc in Embed XPC Services */,
 				50692D1D2E6FDB880043C7BB /* SecretiveUpdater.xpc in Embed XPC Services */,
 				50692E5B2E6FF9D20043C7BB /* SecretAgentInputParser.xpc in Embed XPC Services */,
 			);
@@ -143,6 +176,7 @@
 			dstSubfolderSpec = 16;
 			files = (
 				50692E6D2E6FFA5F0043C7BB /* SecretiveUpdater.xpc in Embed XPC Services */,
+				50E2052D2FAAB92000402380 /* SecretiveCertificateParser.xpc in Embed XPC Services */,
 				50692E702E6FFA6E0043C7BB /* SecretAgentInputParser.xpc in Embed XPC Services */,
 			);
 			name = "Embed XPC Services";
@@ -240,6 +274,17 @@
 		50BDCB752E6450950072D2E7 /* ConfigurationItemView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConfigurationItemView.swift; sourceTree = "<group>"; };
 		50C385A42407A76D00AF2719 /* SecretDetailView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SecretDetailView.swift; sourceTree = "<group>"; };
 		50CF4ABB2E601B0F005588DC /* ActionButtonStyle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ActionButtonStyle.swift; sourceTree = "<group>"; };
+		50E204E82FA9D12700402380 /* CertificateDetailView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CertificateDetailView.swift; sourceTree = "<group>"; };
+		50E204EC2FAA997F00402380 /* CertificateListItemView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CertificateListItemView.swift; sourceTree = "<group>"; };
+		50E204EE2FAA9C1400402380 /* MultilineInfoView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MultilineInfoView.swift; sourceTree = "<group>"; };
+		50E205142FAAB81C00402380 /* SecretiveCertificateParser.xpc */ = {isa = PBXFileReference; explicitFileType = "wrapper.xpc-service"; includeInIndex = 0; path = SecretiveCertificateParser.xpc; sourceTree = BUILT_PRODUCTS_DIR; };
+		50E205232FAAB82700402380 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		50E205242FAAB82700402380 /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
+		50E2052A2FAAB85000402380 /* SecretiveCertificateParser.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = SecretiveCertificateParser.entitlements; sourceTree = "<group>"; };
+		50E2052B2FAAB85000402380 /* SecretiveCertificateParser.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SecretiveCertificateParser.swift; sourceTree = "<group>"; };
+		50E205342FAABC6300402380 /* DeleteCertificateView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DeleteCertificateView.swift; sourceTree = "<group>"; };
+		50E205352FAABC6300402380 /* EditCertificateView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EditCertificateView.swift; sourceTree = "<group>"; };
+		50E2057F2FAB291E00402380 /* CertificateMigrator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CertificateMigrator.swift; sourceTree = "<group>"; };
 		50E4C4522E73C78900C73783 /* WindowBackgroundStyle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WindowBackgroundStyle.swift; sourceTree = "<group>"; };
 		50E4C4C22E7765DF00C73783 /* AboutView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AboutView.swift; sourceTree = "<group>"; };
 		50E4C4C72E777E4200C73783 /* AppIcon.icon */ = {isa = PBXFileReference; lastKnownFileType = folder.iconcomposer.icon; path = AppIcon.icon; sourceTree = "<group>"; };
@@ -252,10 +297,13 @@
 			buildActionMask = 2147483647;
 			files = (
 				50E0145C2EDB9CDF00B121F1 /* Common in Frameworks */,
+				50E2058A2FAC2EB600402380 /* Formatters in Frameworks */,
 				5003EF3B278005E800DF2006 /* SecretKit in Frameworks */,
 				501421622781262300BBAA70 /* Brief in Frameworks */,
+				50E205842FAB296A00402380 /* SharedXPCServices in Frameworks */,
 				5003EF5F2780081600DF2006 /* SecureEnclaveSecretKit in Frameworks */,
 				5003EF612780081600DF2006 /* SmartCardSecretKit in Frameworks */,
+				505F5EF22FA9635700C45824 /* CertificateKit in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -263,6 +311,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				50E205862FAC2EA000402380 /* Formatters in Frameworks */,
 				50692D2D2E6FDC000043C7BB /* XPCWrappers in Frameworks */,
 				50692D312E6FDC390043C7BB /* Brief in Frameworks */,
 			);
@@ -284,12 +333,23 @@
 				5003EF3D278005F300DF2006 /* Brief in Frameworks */,
 				5003EF632780081B00DF2006 /* SecureEnclaveSecretKit in Frameworks */,
 				5003EF652780081B00DF2006 /* SmartCardSecretKit in Frameworks */,
+				50E205822FAB293B00402380 /* SharedXPCServices in Frameworks */,
 				5003EF3F278005F300DF2006 /* SecretAgentKit in Frameworks */,
 				5003EF41278005FA00DF2006 /* SecretKit in Frameworks */,
 				50E0145E2EDB9CE400B121F1 /* Common in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		50E205112FAAB81C00402380 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				50E205882FAC2EAB00402380 /* Formatters in Frameworks */,
+				50E205332FAAB95A00402380 /* SSHProtocolKit in Frameworks */,
+				50E205312FAAB95500402380 /* XPCWrappers in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXFrameworksBuildPhase section */

 /* Begin PBXGroup section */
@@ -311,10 +371,14 @@
 				5099A02323FD2AAA0062B6F2 /* CreateSecretView.swift */,
 				50B8550C24138C4F009958AC /* DeleteSecretView.swift */,
 				2C4A9D2E2636FFD3008CC8E2 /* EditSecretView.swift */,
+				50E205342FAABC6300402380 /* DeleteCertificateView.swift */,
+				50E205352FAABC6300402380 /* EditCertificateView.swift */,
 				50BB046A2418AAAE00D6E079 /* EmptyStoreView.swift */,
 				506772C82425BB8500034DED /* NoStoresView.swift */,
 				50C385A42407A76D00AF2719 /* SecretDetailView.swift */,
+				50E204E82FA9D12700402380 /* CertificateDetailView.swift */,
 				50153E21250DECA300525160 /* SecretListItemView.swift */,
+				50E204EC2FAA997F00402380 /* CertificateListItemView.swift */,
 				5079BA0E250F29BF00EA86F4 /* StoreListView.swift */,
 			);
 			path = Secrets;
@@ -340,6 +404,7 @@
 				50BDCB712E63BAF20072D2E7 /* AgentStatusView.swift */,
 				50617D8423FCE48E0099B055 /* ContentView.swift */,
 				5066A6C72516FE6E004B5A36 /* CopyableView.swift */,
+				50E204EE2FAA9C1400402380 /* MultilineInfoView.swift */,
 				50153E1F250AFCB200525160 /* UpdateView.swift */,
 			);
 			path = Views;
@@ -354,6 +419,7 @@
 				508A58AF241E144C0069DC07 /* Config */,
 				50692D272E6FDB8D0043C7BB /* SecretiveUpdater */,
 				50692E662E6FF9E20043C7BB /* SecretAgentInputParser */,
+				50E205262FAAB82700402380 /* SecretiveCertificateParser */,
 				50617D8023FCE48E0099B055 /* Products */,
 				5099A08B240243730062B6F2 /* Frameworks */,
 			);
@@ -366,6 +432,7 @@
 				50A3B78A24026B7500D209EA /* SecretAgent.app */,
 				50692D122E6FDB880043C7BB /* SecretiveUpdater.xpc */,
 				50692E502E6FF9D20043C7BB /* SecretAgentInputParser.xpc */,
+				50E205142FAAB81C00402380 /* SecretiveCertificateParser.xpc */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -465,6 +532,7 @@
 				5018F54E24064786002EB505 /* Notifier.swift */,
 				501578122E6C0479004A37D0 /* XPCInputParser.swift */,
 				503647472F870B7800977A23 /* BatchedRequestsView.swift */,
+				50E2057F2FAB291E00402380 /* CertificateMigrator.swift */,
 				50A3B79524026B7600D209EA /* Main.storyboard */,
 				50A3B79824026B7600D209EA /* Info.plist */,
 				508BF29425B4F140009EFB7E /* InternetAccessPolicy.plist */,
@@ -482,6 +550,17 @@
 			path = "Preview Content";
 			sourceTree = "<group>";
 		};
+		50E205262FAAB82700402380 /* SecretiveCertificateParser */ = {
+			isa = PBXGroup;
+			children = (
+				50E205232FAAB82700402380 /* Info.plist */,
+				50E205242FAAB82700402380 /* main.swift */,
+				50E2052A2FAAB85000402380 /* SecretiveCertificateParser.entitlements */,
+				50E2052B2FAAB85000402380 /* SecretiveCertificateParser.swift */,
+			);
+			path = SecretiveCertificateParser;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */

 /* Begin PBXNativeTarget section */
@@ -502,6 +581,7 @@
 				50142167278126B500BBAA70 /* PBXTargetDependency */,
 				50692D1C2E6FDB880043C7BB /* PBXTargetDependency */,
 				50692E5A2E6FF9D20043C7BB /* PBXTargetDependency */,
+				50E2051C2FAAB81C00402380 /* PBXTargetDependency */,
 			);
 			name = Secretive;
 			packageProductDependencies = (
@@ -510,6 +590,9 @@
 				5003EF602780081600DF2006 /* SmartCardSecretKit */,
 				501421612781262300BBAA70 /* Brief */,
 				50E0145B2EDB9CDF00B121F1 /* Common */,
+				505F5EF12FA9635700C45824 /* CertificateKit */,
+				50E205832FAB296A00402380 /* SharedXPCServices */,
+				50E205892FAC2EB600402380 /* Formatters */,
 			);
 			productName = Secretive;
 			productReference = 50617D7F23FCE48E0099B055 /* Secretive.app */;
@@ -531,6 +614,7 @@
 			packageProductDependencies = (
 				50692D2C2E6FDC000043C7BB /* XPCWrappers */,
 				50692D302E6FDC390043C7BB /* Brief */,
+				50E205852FAC2EA000402380 /* Formatters */,
 			);
 			productName = SecretiveUpdater;
 			productReference = 50692D122E6FDB880043C7BB /* SecretiveUpdater.xpc */;
@@ -573,6 +657,7 @@
 				501577D42E6BC5DD004A37D0 /* PBXTargetDependency */,
 				50692E6F2E6FFA5F0043C7BB /* PBXTargetDependency */,
 				50692E722E6FFA6E0043C7BB /* PBXTargetDependency */,
+				50E2052F2FAAB92000402380 /* PBXTargetDependency */,
 			);
 			name = SecretAgent;
 			packageProductDependencies = (
@@ -582,11 +667,34 @@
 				5003EF622780081B00DF2006 /* SecureEnclaveSecretKit */,
 				5003EF642780081B00DF2006 /* SmartCardSecretKit */,
 				50E0145D2EDB9CE400B121F1 /* Common */,
+				50E205812FAB293B00402380 /* SharedXPCServices */,
 			);
 			productName = SecretAgent;
 			productReference = 50A3B78A24026B7500D209EA /* SecretAgent.app */;
 			productType = "com.apple.product-type.application";
 		};
+		50E205132FAAB81C00402380 /* SecretiveCertificateParser */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 50E2051F2FAAB81C00402380 /* Build configuration list for PBXNativeTarget "SecretiveCertificateParser" */;
+			buildPhases = (
+				50E205102FAAB81C00402380 /* Sources */,
+				50E205112FAAB81C00402380 /* Frameworks */,
+				50E205122FAAB81C00402380 /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = SecretiveCertificateParser;
+			packageProductDependencies = (
+				50E205302FAAB95500402380 /* XPCWrappers */,
+				50E205322FAAB95A00402380 /* SSHProtocolKit */,
+				50E205872FAC2EAB00402380 /* Formatters */,
+			);
+			productName = SecretAgentCertificateParser;
+			productReference = 50E205142FAAB81C00402380 /* SecretiveCertificateParser.xpc */;
+			productType = "com.apple.product-type.xpc-service";
+		};
 /* End PBXNativeTarget section */

 /* Begin PBXProject section */
@@ -594,7 +702,7 @@
 			isa = PBXProject;
 			attributes = {
 				BuildIndependentTargetsInParallel = YES;
-				LastSwiftUpdateCheck = 2600;
+				LastSwiftUpdateCheck = 2650;
 				LastUpgradeCheck = 2640;
 				ORGANIZATIONNAME = "Max Goedjen";
 				TargetAttributes = {
@@ -610,6 +718,9 @@
 					50A3B78924026B7500D209EA = {
 						CreatedOnToolsVersion = 11.4;
 					};
+					50E205132FAAB81C00402380 = {
+						CreatedOnToolsVersion = 26.5;
+					};
 				};
 			};
 			buildConfigurationList = 50617D7A23FCE48D0099B055 /* Build configuration list for PBXProject "Secretive" */;
@@ -637,6 +748,7 @@
 				50A3B78924026B7500D209EA /* SecretAgent */,
 				50692D112E6FDB880043C7BB /* SecretiveUpdater */,
 				50692E4F2E6FF9D20043C7BB /* SecretAgentInputParser */,
+				50E205132FAAB81C00402380 /* SecretiveCertificateParser */,
 			);
 		};
 /* End PBXProject section */
@@ -680,6 +792,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		50E205122FAAB81C00402380 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXResourcesBuildPhase section */

 /* Begin PBXSourcesBuildPhase section */
@@ -692,13 +811,16 @@
 				50E4C4C32E7765DF00C73783 /* AboutView.swift in Sources */,
 				2C4A9D2F2636FFD3008CC8E2 /* EditSecretView.swift in Sources */,
 				50E4C4532E73C78C00C73783 /* WindowBackgroundStyle.swift in Sources */,
+				50E204E92FA9D12700402380 /* CertificateDetailView.swift in Sources */,
 				5091D2BC25183B830049FD9B /* ApplicationDirectoryController.swift in Sources */,
 				504789232E697DD300B4556F /* BoxBackgroundStyle.swift in Sources */,
+				50E204EF2FAA9C1400402380 /* MultilineInfoView.swift in Sources */,
 				5066A6C22516F303004B5A36 /* SetupView.swift in Sources */,
 				5065E313295517C500E16645 /* ToolbarButtonStyle.swift in Sources */,
 				50617D8523FCE48E0099B055 /* ContentView.swift in Sources */,
 				504788F62E68206F00B4556F /* GettingStartedView.swift in Sources */,
 				50CF4ABC2E601B0F005588DC /* ActionButtonStyle.swift in Sources */,
+				50E204ED2FAA997F00402380 /* CertificateListItemView.swift in Sources */,
 				50571E0324393C2600F76F6C /* JustUpdatedChecker.swift in Sources */,
 				5079BA0F250F29BF00EA86F4 /* StoreListView.swift in Sources */,
 				50617DD223FCEFA90099B055 /* PreviewStore.swift in Sources */,
@@ -711,12 +833,14 @@
 				5066A6C82516FE6E004B5A36 /* CopyableView.swift in Sources */,
 				50B8550D24138C4F009958AC /* DeleteSecretView.swift in Sources */,
 				50BB046B2418AAAE00D6E079 /* EmptyStoreView.swift in Sources */,
+				50E205372FAABC6300402380 /* DeleteCertificateView.swift in Sources */,
 				50BDCB762E6450950072D2E7 /* ConfigurationItemView.swift in Sources */,
 				50617D8323FCE48E0099B055 /* App.swift in Sources */,
 				504788F42E681F6900B4556F /* ToolConfigurationView.swift in Sources */,
 				506772C92425BB8500034DED /* NoStoresView.swift in Sources */,
 				50153E22250DECA300525160 /* SecretListItemView.swift in Sources */,
 				508A58B5241ED48F0069DC07 /* PreviewAgentStatusChecker.swift in Sources */,
+				50E205362FAABC6300402380 /* EditCertificateView.swift in Sources */,
 				508A58AA241E06B40069DC07 /* PreviewUpdater.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -743,13 +867,23 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				50020BB024064869003D4025 /* App.swift in Sources */,
+				50E205802FAB291E00402380 /* CertificateMigrator.swift in Sources */,
+				50020BB024064869003D4025 /* AppDelegate.swift in Sources */,
 				5018F54F24064786002EB505 /* Notifier.swift in Sources */,
 				503647482F870B7800977A23 /* BatchedRequestsView.swift in Sources */,
 				501578132E6C0479004A37D0 /* XPCInputParser.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		50E205102FAAB81C00402380 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				50E205282FAAB82700402380 /* main.swift in Sources */,
+				50E2052C2FAAB85000402380 /* SecretiveCertificateParser.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXSourcesBuildPhase section */

 /* Begin PBXTargetDependency section */
@@ -782,6 +916,16 @@
 			target = 50692E4F2E6FF9D20043C7BB /* SecretAgentInputParser */;
 			targetProxy = 50692E712E6FFA6E0043C7BB /* PBXContainerItemProxy */;
 		};
+		50E2051C2FAAB81C00402380 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 50E205132FAAB81C00402380 /* SecretiveCertificateParser */;
+			targetProxy = 50E2051B2FAAB81C00402380 /* PBXContainerItemProxy */;
+		};
+		50E2052F2FAAB92000402380 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 50E205132FAAB81C00402380 /* SecretiveCertificateParser */;
+			targetProxy = 50E2052E2FAAB92000402380 /* PBXContainerItemProxy */;
+		};
 /* End PBXTargetDependency section */

 /* Begin PBXVariantGroup section */
@@ -1486,6 +1630,103 @@
 			};
 			name = Release;
 		};
+		50E205202FAAB81C00402380 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
+				CODE_SIGN_ENTITLEMENTS = SecretiveCertificateParser/SecretiveCertificateParser.entitlements;
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = "$(SECRETIVE_DEVELOPMENT_TEAM)";
+				ENABLE_APP_SANDBOX = YES;
+				ENABLE_HARDENED_RUNTIME = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu17;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = SecretiveCertificateParser/Info.plist;
+				INFOPLIST_KEY_CFBundleDisplayName = SecretiveCertificateParser;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "Copyright © 2026 Max Goedjen. All rights reserved.";
+				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
+				MACOSX_DEPLOYMENT_TARGET = 14.0;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = "$(SECRETIVE_BASE_BUNDLE_ID).SecretiveCertificateParser";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				REGISTER_APP_GROUPS = YES;
+				SKIP_INSTALL = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "DEBUG $(inherited)";
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
+				SWIFT_VERSION = 5.0;
+			};
+			name = Debug;
+		};
+		50E205212FAAB81C00402380 /* Test */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
+				CODE_SIGN_ENTITLEMENTS = SecretiveCertificateParser/SecretiveCertificateParser.entitlements;
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				CURRENT_PROJECT_VERSION = 1;
+				ENABLE_APP_SANDBOX = YES;
+				ENABLE_HARDENED_RUNTIME = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu17;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = SecretiveCertificateParser/Info.plist;
+				INFOPLIST_KEY_CFBundleDisplayName = SecretiveCertificateParser;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "Copyright © 2026 Max Goedjen. All rights reserved.";
+				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
+				MACOSX_DEPLOYMENT_TARGET = 14.0;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = "$(SECRETIVE_BASE_BUNDLE_ID).SecretiveCertificateParser";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				REGISTER_APP_GROUPS = YES;
+				SKIP_INSTALL = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
+				SWIFT_VERSION = 5.0;
+			};
+			name = Test;
+		};
+		50E205222FAAB81C00402380 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
+				CODE_SIGN_ENTITLEMENTS = SecretiveCertificateParser/SecretiveCertificateParser.entitlements;
+				CODE_SIGN_IDENTITY = "Developer ID Application";
+				CODE_SIGN_STYLE = Manual;
+				COMBINE_HIDPI_IMAGES = YES;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = "";
+				"DEVELOPMENT_TEAM[sdk=macosx*]" = Z72PRUAWF6;
+				ENABLE_APP_SANDBOX = YES;
+				ENABLE_HARDENED_RUNTIME = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu17;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = SecretiveCertificateParser/Info.plist;
+				INFOPLIST_KEY_CFBundleDisplayName = SecretiveCertificateParser;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "Copyright © 2026 Max Goedjen. All rights reserved.";
+				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
+				MACOSX_DEPLOYMENT_TARGET = 14.0;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = "$(SECRETIVE_BASE_BUNDLE_ID).SecretiveCertificateParser";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				REGISTER_APP_GROUPS = YES;
+				SKIP_INSTALL = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
+				SWIFT_VERSION = 5.0;
+			};
+			name = Release;
+		};
 /* End XCBuildConfiguration section */

 /* Begin XCConfigurationList section */
@@ -1539,6 +1780,16 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		50E2051F2FAAB81C00402380 /* Build configuration list for PBXNativeTarget "SecretiveCertificateParser" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				50E205202FAAB81C00402380 /* Debug */,
+				50E205212FAAB81C00402380 /* Test */,
+				50E205222FAAB81C00402380 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 /* End XCConfigurationList section */

 /* Begin XCSwiftPackageProductDependency section */
@@ -1582,6 +1833,10 @@
 			isa = XCSwiftPackageProductDependency;
 			productName = Brief;
 		};
+		505F5EF12FA9635700C45824 /* CertificateKit */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = CertificateKit;
+		};
 		50692D2C2E6FDC000043C7BB /* XPCWrappers */ = {
 			isa = XCSwiftPackageProductDependency;
 			productName = XPCWrappers;
@@ -1602,6 +1857,34 @@
 			isa = XCSwiftPackageProductDependency;
 			productName = Common;
 		};
+		50E205302FAAB95500402380 /* XPCWrappers */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = XPCWrappers;
+		};
+		50E205322FAAB95A00402380 /* SSHProtocolKit */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = SSHProtocolKit;
+		};
+		50E205812FAB293B00402380 /* SharedXPCServices */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = SharedXPCServices;
+		};
+		50E205832FAB296A00402380 /* SharedXPCServices */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = SharedXPCServices;
+		};
+		50E205852FAC2EA000402380 /* Formatters */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = Formatters;
+		};
+		50E205872FAC2EAB00402380 /* Formatters */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = Formatters;
+		};
+		50E205892FAC2EB600402380 /* Formatters */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = Formatters;
+		};
 /* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = 50617D7723FCE48D0099B055 /* Project object */;
--- a/Sources/Secretive.xcodeproj/xcshareddata/xcschemes/Secretive.xcscheme
+++ b/Sources/Secretive.xcodeproj/xcshareddata/xcschemes/Secretive.xcscheme
@@ -23,7 +23,7 @@
      </BuildActionEntries>
   </BuildAction>
   <TestAction
-      buildConfiguration = "Test"
+      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
      shouldUseLaunchSchemeArgsEnv = "YES">
--- a/Sources/Secretive/App.swift
+++ b/Sources/Secretive/App.swift
@@ -3,6 +3,7 @@ import SecretKit
 import SecureEnclaveSecretKit
 import SmartCardSecretKit
 import Brief
+import CertificateKit

@main
 struct Secretive: App {
@@ -14,6 +15,7 @@ struct Secretive: App {
        WindowGroup {
            ContentView()
                .environment(EnvironmentValues._secretStoreList)
+                .environment(EnvironmentValues._certificateStore)
                .onReceive(NotificationCenter.default.publisher(for: NSApplication.didBecomeActiveNotification)) { _ in
                    Task {
                        @AppStorage("defaultsHasRunSetup") var hasRunSetup = false
@@ -92,15 +94,18 @@ extension EnvironmentValues {
    @MainActor fileprivate static let _secretStoreList: SecretStoreList = {
        let list = SecretStoreList()
        let cryptoKit = SecureEnclave.Store()
-        let migrator = SecureEnclave.CryptoKitMigrator()
-        try? migrator.migrate(to: cryptoKit)
+        let cryptoKitMigrator = SecureEnclave.CryptoKitMigrator()
+        try? cryptoKitMigrator.migrate(to: cryptoKit)
        list.add(store: cryptoKit)
        list.add(store: SmartCard.Store())
        return list
    }()

+    @MainActor fileprivate static let _certificateStore: CertificateStore = CertificateStore()
+    
    private static let _agentLaunchController = AgentLaunchController()
    @Entry var agentLaunchController: any AgentLaunchControllerProtocol = _agentLaunchController
+
    private static let _updater: any UpdaterProtocol = {
        @AppStorage("defaultsHasRunSetup") var hasRunSetup = false
        return Updater(checkOnLaunch: hasRunSetup)
@@ -113,6 +118,10 @@ extension EnvironmentValues {
    @MainActor var secretStoreList: SecretStoreList {
        EnvironmentValues._secretStoreList
    }
+
+    @MainActor var certificateStore: CertificateStore {
+        EnvironmentValues._certificateStore
+    }
 }

 extension FocusedValues {
--- a/Sources/Secretive/Views/Secrets/CertificateDetailView.swift
+++ b/Sources/Secretive/Views/Secrets/CertificateDetailView.swift
@@ -0,0 +1,93 @@
+import SwiftUI
+import SecretKit
+import Common
+import CertificateKit
+import SSHProtocolKit
+import CryptoKit
+struct CertificateDetailView: View {
+
+    let certificate: Certificate
+
+    var body: some View {
+        ScrollView {
+            Form {
+                Section {
+                    CopyableView(
+                        title: .certificateDetailKeyIdLabel,
+                        image: Image(systemName: "person.text.rectangle"),
+                        text: certificate.keyID
+                    )
+                    Spacer()
+                        .frame(height: 20)
+                    CopyableView(
+                        title: .certificateDetailSerialLabel,
+                        image: Image(systemName: "number.circle"),
+                        text: certificate.serial.formatted()
+                    )
+                    Spacer()
+                        .frame(height: 20)
+                    CopyableView(
+                        title: .secretDetailSha256FingerprintLabel,
+                        image: Image(systemName: "touchid"),
+                        text: OpenSSHCertificateWriter().openSSHSHA256KeyFingerprint(publicKey: certificate.publicKey)
+                    )
+                    Spacer()
+                        .frame(height: 20)
+                    CopyableView(
+                        title: .secretDetailSha256FingerprintLabel,
+                        image: Image(systemName: "touchid"),
+                        text: OpenSSHCertificateWriter().openSSHSHA256KeyFingerprint(publicKey: certificate.signingKey)
+                    )
+                    Spacer()
+                        .frame(height: 20)
+                    CopyableView(
+                        title: .certificateDetailPathLabel,
+                        image: Image(systemName: "checkmark.seal.text.page"),
+                        text: URL.certificatePath(for: certificate.id, in: URL.certificatesDirectory),
+                        showRevealInFinder: true
+                    )
+                    if let validityRange = certificate.validityRange {
+                        let epoch = Date(timeIntervalSince1970: 0)
+                        let end = Date(timeIntervalSince1970: TimeInterval(UInt64.max))
+                        switch (validityRange.lowerBound, validityRange.upperBound) {
+                        case (epoch, end):
+                            EmptyView()
+                        case (epoch, let otherEnd):
+                            Spacer()
+                                .frame(height: 20)
+                            MultilineInfoView(title: .certificateDetailValidUntilLabel, image: Image(systemName: "calendar.badge.clock"), items: [otherEnd.formatted()])
+                        case (let otherStart, end):
+                            Spacer()
+                                .frame(height: 20)
+                            MultilineInfoView(title: .certificateDetailValidAfterLabel, image: Image(systemName: "calendar.badge.clock"), items: [otherStart.formatted()])
+                        default:
+                            Spacer()
+                                .frame(height: 20)
+                            MultilineInfoView(title: .certificateDetailValidityRangeLabel, image: Image(systemName: "calendar.badge.clock"), items: [validityRange.formatted()])
+                        }
+                    }
+                    if !certificate.principals.isEmpty {
+                        Spacer()
+                            .frame(height: 20)
+                        MultilineInfoView(title: .certificateDetailPrincipalsLabel, image: Image(systemName: "person.2"), items: certificate.principals)
+                    }
+                    if !certificate.criticalOptions.isEmpty {
+                        Spacer()
+                            .frame(height: 20)
+                        MultilineInfoView(title: .certificateDetailCriticalOptionsLabel, image: Image(systemName: "person.2"), items: certificate.criticalOptions)
+                    }
+                    if !certificate.extensions.isEmpty {
+                        Spacer()
+                            .frame(height: 20)
+                        MultilineInfoView(title: .certificateDetailExtensionsLabel, image: Image(systemName: "person.2"), items: certificate.extensions)
+                    }
+                    Spacer()
+                }
+            }
+            .padding()
+        }
+        .frame(minHeight: 200, maxHeight: .infinity)
+    }
+
+
+}
--- a/Sources/Secretive/Views/Secrets/CertificateListItemView.swift
+++ b/Sources/Secretive/Views/Secrets/CertificateListItemView.swift
@@ -0,0 +1,42 @@
+import SwiftUI
+import CertificateKit
+import SSHProtocolKit
+
+struct CertificateListItemView: View {
+
+    @Environment(\.certificateStore) private var store
+
+    var certificate: Certificate
+
+    @State var isDeleting: Bool = false
+    @State var isRenaming: Bool = false
+
+    var deletedCertificate: (Certificate) -> Void
+    var renamedCertificate: (Certificate) -> Void
+
+    var body: some View {
+        NavigationLink(value: certificate) {
+            Text(certificate.name)
+        }
+        .sheet(isPresented: $isRenaming, onDismiss: {
+            renamedCertificate(certificate)
+        }, content: {
+            EditCertificateView(store: store, certificate: certificate)
+        })
+        .showingDeleteConfirmation(isPresented: $isDeleting, certificate, store) { deleted in
+            if deleted {
+                deletedCertificate(certificate)
+            }
+        }
+        .contextMenu {
+                Button(action: { isRenaming = true }) {
+                    Image(systemName: "pencil")
+                    Text(.secretListEditButton)
+                }
+                Button(action: { isDeleting = true }) {
+                    Image(systemName: "trash")
+                    Text(.secretListDeleteButton)
+                }
+        }
+    }
+}
--- a/Sources/Secretive/Views/Secrets/DeleteCertificateView.swift
+++ b/Sources/Secretive/Views/Secrets/DeleteCertificateView.swift
@@ -0,0 +1,52 @@
+import SwiftUI
+import CertificateKit
+import SSHProtocolKit
+
+extension View {
+
+    func showingDeleteConfirmation(isPresented: Binding<Bool>, _ certificate: Certificate,  _ store: CertificateStore, dismissalBlock: @escaping (Bool) -> ()) -> some View {
+        modifier(DeleteCertificateConfirmationModifier(isPresented: isPresented, certificate: certificate, store: store, dismissalBlock: dismissalBlock))
+    }
+
+}
+
+struct DeleteCertificateConfirmationModifier: ViewModifier {
+
+    var isPresented: Binding<Bool>
+    var certificate: Certificate
+    var store: CertificateStore
+    var dismissalBlock: (Bool) -> ()
+    @State var confirmedSecretName = ""
+    @State private var errorText: String?
+
+    func body(content: Content) -> some View {
+        content
+            .confirmationDialog(
+                String(localized: .deleteConfirmationTitle(name: certificate.name)),
+                isPresented: isPresented,
+                titleVisibility: .visible,
+                actions: {
+                    Button(.deleteConfirmationDeleteButton, action: delete)
+                    Button(.deleteConfirmationCancelButton, role: .cancel) {
+                        dismissalBlock(false)
+                    }
+                },
+            )
+            .dialogIcon(Image(systemName: "lock.trianglebadge.exclamationmark.fill"))
+            .onExitCommand {
+                dismissalBlock(false)
+            }
+    }
+
+    func delete() {
+        Task {
+            do {
+                try store.delete(certificate: certificate)
+                dismissalBlock(true)
+            } catch {
+                errorText = error.localizedDescription
+            }
+        }
+    }
+
+}
--- a/Sources/Secretive/Views/Secrets/DeleteSecretView.swift
+++ b/Sources/Secretive/Views/Secrets/DeleteSecretView.swift
@@ -21,7 +21,7 @@ struct DeleteSecretConfirmationModifier: ViewModifier {
    func body(content: Content) -> some View {
        content
            .confirmationDialog(
-                .deleteConfirmationTitle(secretName: secret.name),
+                .deleteConfirmationTitle(name: secret.name),
                isPresented: isPresented,
                titleVisibility: .visible,
                actions: {
--- a/Sources/Secretive/Views/Secrets/EditCertificateView.swift
+++ b/Sources/Secretive/Views/Secrets/EditCertificateView.swift
@@ -0,0 +1,60 @@
+import SwiftUI
+import SSHProtocolKit
+import CertificateKit
+
+struct EditCertificateView: View {
+
+    let store: CertificateStore
+    let certificate: Certificate
+
+    @State private var name: String
+    @State var errorText: String?
+
+    @Environment(\.dismiss) var dismiss
+
+    init(store: CertificateStore, certificate: Certificate) {
+        self.store = store
+        self.certificate = certificate
+        name = certificate.name
+    }
+
+    var body: some View {
+        VStack(alignment: .trailing) {
+            Form {
+                Section {
+                    TextField(String(localized: .renameCertificateLabel), text: $name, prompt: Text(.renameCertificateNamePlaceholder))
+                } footer: {
+                    if let errorText {
+                        Text(verbatim: errorText)
+                            .errorStyle()
+                    }
+                }
+            }
+            HStack {
+                Button(.editCancelButton) {
+                    dismiss()
+                }
+                .keyboardShortcut(.cancelAction)
+                Button(.editSaveButton, action: rename)
+                    .disabled(name.isEmpty)
+                    .keyboardShortcut(.return)
+                    .primaryButton()
+            }
+            .padding()
+        }
+        .formStyle(.grouped)
+    }
+
+    func rename() {
+        Task {
+            do {
+                var updated = certificate
+                updated.openSSHCertificate.name = name
+                try store.update(certificate: updated)
+                dismiss()
+            } catch {
+                errorText = error.localizedDescription
+            }
+        }
+    }
+}
--- a/Sources/Secretive/Views/Secrets/SecretDetailView.swift
+++ b/Sources/Secretive/Views/Secrets/SecretDetailView.swift
@@ -1,11 +1,14 @@
 import SwiftUI
 import SecretKit
 import Common
+import CertificateKit
 import SSHProtocolKit

 struct SecretDetailView<SecretType: Secret>: View {
    
    let secret: SecretType
+    let certificates: [Certificate]
+    let navigateToCertificate: ((Certificate) -> Void)?

    private let keyWriter = OpenSSHPublicKeyWriter()

@@ -13,16 +16,42 @@ struct SecretDetailView<SecretType: Secret>: View {
        ScrollView {
            Form {
                Section {
-                    CopyableView(title: .secretDetailSha256FingerprintLabel, image: Image(systemName: "touchid"), text: keyWriter.openSSHSHA256Fingerprint(secret: secret))
+                    CopyableView(
+                        title: .secretDetailSha256FingerprintLabel,
+                        image: Image(systemName: "touchid"),
+                        text: keyWriter.openSSHSHA256Fingerprint(secret: secret)
+                    )
                    Spacer()
                        .frame(height: 20)
-                    CopyableView(title: .secretDetailMd5FingerprintLabel, image: Image(systemName: "touchid"), text: keyWriter.openSSHMD5Fingerprint(secret: secret))
+                    CopyableView(
+                        title: .secretDetailMd5FingerprintLabel,
+                        image: Image(systemName: "touchid"),
+                        text: keyWriter.openSSHMD5Fingerprint(secret: secret)
+                    )
                    Spacer()
                        .frame(height: 20)
-                    CopyableView(title: .secretDetailPublicKeyLabel, image: Image(systemName: "key"), text: keyString)
-                    Spacer()
-                        .frame(height: 20)
-                    CopyableView(title: .secretDetailPublicKeyPathLabel, image: Image(systemName: "lock.doc"), text: URL.publicKeyPath(for: secret, in: URL.publicKeyDirectory), showRevealInFinder: true)
+                    CopyableView(
+                        title: .secretDetailPublicKeyPathLabel,
+                        image: Image(systemName: "lock.doc"),
+                        text: URL.publicKeyPath(for: secret, in: URL.publicKeyDirectory),
+                        showRevealInFinder: true
+                    )
+                    if !certificates.isEmpty {
+                        Spacer()
+                            .frame(height: 20)
+                        MultilineInfoView(
+                            title: .secretDetailCertificatePathLabel,
+                            image: Image(
+                                systemName: "checkmark.seal.text.page"
+                            ),
+                            items: certificates.map({ certificate in
+                                MultilineInfoView.Item(
+                                    text: certificate.name,
+                                    action: (Image(systemName: "chevron.forward"), { navigateToCertificate?(certificate) })
+                                )
+                            })
+                        )
+                    }
                    Spacer()
                }
            }
@@ -32,10 +61,6 @@ struct SecretDetailView<SecretType: Secret>: View {
    }


-    var keyString: String {
-        keyWriter.openSSHString(secret: secret)
-    }
-
 }

 //#Preview {
--- a/Sources/Secretive/Views/Secrets/StoreListView.swift
+++ b/Sources/Secretive/Views/Secrets/StoreListView.swift
@@ -1,25 +1,33 @@
 import SwiftUI
 import SecretKit
+import SSHProtocolKit
+import CertificateKit

 struct StoreListView: View {

-    @Binding var activeSecret: AnySecret?
+    enum StoreListSelection: Hashable {
+        case secret(AnySecret)
+        case certificate(Certificate)
+    }
+
+    @Binding var selection: StoreListSelection?

    @Environment(\.secretStoreList) private var storeList
+    @Environment(\.certificateStore) private var certificateStore

    private func secretDeleted(secret: AnySecret) {
-        activeSecret = nextDefaultSecret
+        selection = nextDefaultSecret.map(StoreListSelection.secret)
    }

    private func secretRenamed(secret: AnySecret) {
        // Pull new version from store, so we get all updated attributes
-        activeSecret = nil
-        activeSecret = storeList.allSecrets.first(where: { $0.id == secret.id })
+        selection = nil
+        selection = storeList.allSecrets.first(where: { $0.id == secret.id }).map(StoreListSelection.secret)
    }

    var body: some View {
        NavigationSplitView {
-            List(selection: $activeSecret) {
+            List(selection: $selection) {
                ForEach(storeList.stores) { store in
                    if store.isAvailable {
                        Section(header: Text(store.name)) {
@@ -30,29 +38,51 @@ struct StoreListView: View {
                                    deletedSecret: secretDeleted,
                                    renamedSecret: secretRenamed,
                                )
+                                .tag(StoreListSelection.secret(secret))
                            }
                        }
                    }
                }
+                if !certificateStore.certificates.isEmpty {
+                    Section("Certificates") {
+                        ForEach(certificateStore.certificates) { certificate in
+                            CertificateListItemView(
+                                certificate: certificate,
+                                deletedCertificate: { _ in },
+                                renamedCertificate: { _ in }
+                            )
+                            .tag(StoreListSelection.certificate(certificate))
+                        }
+                    }
+                }
            }
        } detail: {
-            if let activeSecret {
-                SecretDetailView(secret: activeSecret)
-            } else if let nextDefaultSecret {
-                // This just means onAppear hasn't executed yet.
-                // Do this to avoid a blip.
-                SecretDetailView(secret: nextDefaultSecret)
-            } else {
-                if let modifiable = storeList.modifiableStore, modifiable.isAvailable {
-                    EmptyStoreView(store: modifiable)
+            switch selection {
+            case .secret(let secret):
+                SecretDetailView(secret: secret, certificates: certificateStore.certificates(for: secret)) {
+                    selection = .certificate($0)
+                }
+            case .certificate(let certificate):
+                CertificateDetailView(certificate: certificate)
+            case nil:
+                if let nextDefaultSecret {
+                    // This just means onAppear hasn't executed yet.
+                    // Do this to avoid a blip.
+                    SecretDetailView(secret: nextDefaultSecret, certificates: certificateStore.certificates(for: nextDefaultSecret)) {
+                        selection = .certificate($0)
+                    }
                } else {
-                    EmptyStoreView(store: storeList.stores.first(where: \.isAvailable))
+                    if let modifiable = storeList.modifiableStore, modifiable.isAvailable {
+                        EmptyStoreView(store: modifiable)
+                    } else {
+                        EmptyStoreView(store: storeList.stores.first(where: \.isAvailable))
+                    }
                }
            }
        }
        .navigationSplitViewStyle(.balanced)
        .onAppear {
-            activeSecret = nextDefaultSecret
+            selection = nextDefaultSecret.map(StoreListSelection.secret)
        }
        .frame(minWidth: 100, idealWidth: 240)

--- a/Sources/Secretive/Views/Views/ContentView.swift
+++ b/Sources/Secretive/Views/Views/ContentView.swift
@@ -3,16 +3,20 @@ import SecretKit
 import SecureEnclaveSecretKit
 import SmartCardSecretKit
 import Brief
+import SSHProtocolKit
+import SharedXPCServices
+import CertificateKit

 struct ContentView: View {

-    @State var activeSecret: AnySecret?
+    @State var selection: StoreListView.StoreListSelection?

    @State private var selectedUpdate: Release?

    @Environment(\.colorScheme) private var colorScheme
    @Environment(\.openWindow) private var openWindow
    @Environment(\.secretStoreList) private var storeList
+    @Environment(\.certificateStore) private var certificateStore
    @Environment(\.updater) private var updater
    @Environment(\.agentLaunchController) private var agentLaunchController

@@ -25,7 +29,7 @@ struct ContentView: View {
    var body: some View {
        VStack {
            if storeList.anyAvailable {
-                StoreListView(activeSecret: $activeSecret)
+                StoreListView(selection: $selection)
            } else {
                NoStoresView()
            }
@@ -42,6 +46,22 @@ struct ContentView: View {
                runningSetup = true
            }
        }
+        .dropDestination(for: URL.self) { items, location in
+                guard let url = items.first, url.pathExtension == "pub" else { return false }
+            Task {
+                do {
+                    let data = try Data(contentsOf: url)
+                    let parser = try await XPCCertificateParser()
+                    let cert = try await parser.parse(data: data)
+                    let wrapped = Certificate(openSSHCertificate: cert, rawData: data)
+                    try certificateStore.save(certificate: wrapped)
+                    selection = .certificate(wrapped)
+                } catch {
+
+                }
+            }
+            return true
+        } isTargeted: { _ in }
        .focusedSceneValue(\.showCreateSecret,  .init(isEnabled: !runningSetup) {
            showingCreation = true
        })
@@ -49,7 +69,7 @@ struct ContentView: View {
            if let modifiable = storeList.modifiableStore {
                CreateSecretView(store: modifiable) { created in
                    if let created {
-                        activeSecret = created
+                        selection = .secret(created)
                    }
                }
            }
--- a/Sources/Secretive/Views/Views/CopyableView.swift
+++ b/Sources/Secretive/Views/Views/CopyableView.swift
@@ -4,6 +4,7 @@ import UniformTypeIdentifiers
 struct CopyableView: View {

    var title: LocalizedStringResource
+    var subtitle: String?
    var image: Image
    var text: String
    var showRevealInFinder = false
@@ -17,9 +18,16 @@ struct CopyableView: View {
                    .renderingMode(.template)
                    .imageScale(.large)
                    .foregroundColor(primaryTextColor)
-                Text(title)
-                    .font(.headline)
-                    .foregroundColor(primaryTextColor)
+                VStack(alignment: .leading) {
+                    Text(title)
+                        .font(.headline)
+                        .foregroundColor(primaryTextColor)
+                    if let subtitle {
+                        Text(subtitle)
+                            .font(.system(.subheadline, design: .monospaced))
+                            .foregroundColor(secondaryTextColor)
+                    }
+                }
                Spacer()
                if interactionState != .normal {
                    HStack {
--- a/Sources/Secretive/Views/Views/MultilineInfoView.swift
+++ b/Sources/Secretive/Views/Views/MultilineInfoView.swift
@@ -0,0 +1,167 @@
+import SwiftUI
+import UniformTypeIdentifiers
+
+struct MultilineInfoView: View {
+
+    struct Item {
+        let text: String
+        let action: (Image, () -> Void)?
+    }
+
+    var title: LocalizedStringResource
+    var image: Image
+    var items: [Item]
+
+    init(title: LocalizedStringResource, image: Image, items: [Item]) {
+        self.title = title
+        self.image = image
+        self.items = items
+    }
+
+    init(title: LocalizedStringResource, image: Image, items: [String]) {
+        self.title = title
+        self.image = image
+        self.items = items.map({ Item(text: $0, action: nil) })
+    }
+
+    @State private var interactionState: InteractionState = .normal
+    @State private var interactionStateIndex: Int?
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 0) {
+            HStack {
+                image
+                    .renderingMode(.template)
+                    .imageScale(.large)
+                    .foregroundColor(primaryTextColor)
+                Text(title)
+                    .font(.headline)
+                    .foregroundColor(primaryTextColor)
+                Spacer()
+            }
+            .safeAreaPadding(20)
+            ForEach(Array(items.enumerated()), id: \.offset) { item in
+                Divider()
+                    .ignoresSafeArea()
+                    .opacity(item.offset == 0 ? 1 : 0.75)
+                HStack {
+                    Text(item.element.text)
+                    Spacer()
+                    if let (image, _) = item.element.action {
+                        image
+                            .foregroundStyle(.secondary)
+                    }
+                }
+                .safeAreaPadding(20)
+                ._background(interactionState: interactionStateIndex == item.offset ?  interactionState : .normal, cornerRadius: 0)
+                .onHover { hovering in
+                    withAnimation {
+                        guard item.element.action != nil else { return }
+                        interactionState = hovering ? .hovering : .normal
+                        interactionStateIndex = item.offset
+                    }
+                }
+                .gesture(
+                    TapGesture()
+                        .onEnded {
+                            item.element.action?.1()
+                            withAnimation {
+                                interactionState = .normal
+                                interactionStateIndex = nil
+                            }
+                        }
+                )
+
+            }
+        }
+        ._background(interactionState: .normal)
+        .frame(minWidth: 150, maxWidth: .infinity)
+    }
+
+    var primaryTextColor: Color {
+        switch interactionState {
+        case .normal, .hovering:
+            return Color(.textColor)
+        }
+    }
+
+    var secondaryTextColor: Color {
+        switch interactionState {
+        case .normal, .hovering:
+            return Color(.secondaryLabelColor)
+        }
+    }
+
+}
+
+fileprivate enum InteractionState {
+    case normal, hovering
+}
+
+extension View {
+       
+    fileprivate func _background(interactionState: InteractionState, cornerRadius: Double = 15) -> some View {
+        modifier(BackgroundViewModifier(interactionState: interactionState, cornerRadius: cornerRadius))
+    }
+    
+}
+
+fileprivate struct BackgroundViewModifier: ViewModifier {
+    
+    @Environment(\.colorScheme) private var colorScheme
+    @Environment(\.appearsActive) private var appearsActive
+    
+    let interactionState: InteractionState
+    let cornerRadius: Double
+    
+    func body(content: Content) -> some View {
+        if #available(macOS 26.0, *) {
+            content
+            // Very thin opacity lets user hover anywhere over the view, glassEffect doesn't allow.
+                .background(.white.opacity(0.01), in: RoundedRectangle(cornerRadius: 15))
+                .glassEffect(.regular.tint(backgroundColor(interactionState: interactionState)), in: RoundedRectangle(cornerRadius: cornerRadius))
+                .mask(RoundedRectangle(cornerRadius: cornerRadius))
+                .shadow(color: .black.opacity(0.1), radius: 5)
+        } else {
+            content
+                .background(backgroundColor(interactionState: interactionState))
+                .cornerRadius(10)
+        }
+    }
+    
+    func backgroundColor(interactionState: InteractionState) -> Color {
+        guard appearsActive else { return Color.clear }
+        if #available(macOS 26.0, *) {
+            let base = colorScheme == .dark ? Color(white: 0.2) : Color(white: 1)
+            switch interactionState {
+            case .normal:
+                return base
+            case .hovering:
+                return base.mix(with: .accentColor, by: colorScheme == .dark ? 0.2 : 0.1)
+            }
+        } else {
+            switch interactionState {
+            case .normal:
+                return colorScheme == .dark ? Color(white: 0.2) : Color(white: 0.885)
+            case .hovering:
+                return colorScheme == .dark ? Color(white: 0.275) : Color(white: 0.82)
+            }
+        }
+    }
+    
+    
+}
+
+#Preview {
+    MultilineInfoView(title: "Multiple", image: Image(systemName: "figure.wave"), items: [
+        MultilineInfoView.Item(text: "hello", action: (Image(systemName: "chevron.forward"), {})),
+        MultilineInfoView.Item(text: "World", action: (Image(systemName: "chevron.forward"), {})),
+    ])
+    .padding()
+}
+
+
+#Preview {
+    MultilineInfoView(title: "One", image: Image(systemName: "figure.wave"), items: ["Hello world."])
+        .padding()
+}
--- a/Sources/SecretiveCertificateParser/Info.plist
+++ b/Sources/SecretiveCertificateParser/Info.plist
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>XPCService</key>
+	<dict>
+		<key>ServiceType</key>
+		<string>Application</string>
+	</dict>
+</dict>
+</plist>
--- a/Sources/SecretiveCertificateParser/SecretiveCertificateParser.entitlements
+++ b/Sources/SecretiveCertificateParser/SecretiveCertificateParser.entitlements
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.hardened-process</key>
+	<true/>
+	<key>com.apple.security.hardened-process.checked-allocations</key>
+	<true/>
+	<key>com.apple.security.hardened-process.checked-allocations.enable-pure-data</key>
+	<true/>
+	<key>com.apple.security.hardened-process.checked-allocations.no-tagged-receive</key>
+	<true/>
+	<key>com.apple.security.hardened-process.dyld-ro</key>
+	<true/>
+	<key>com.apple.security.hardened-process.enhanced-security-version</key>
+	<integer>1</integer>
+	<key>com.apple.security.hardened-process.hardened-heap</key>
+	<true/>
+	<key>com.apple.security.hardened-process.platform-restrictions</key>
+	<integer>2</integer>
+</dict>
+</plist>
--- a/Sources/SecretiveCertificateParser/SecretiveCertificateParser.swift
+++ b/Sources/SecretiveCertificateParser/SecretiveCertificateParser.swift
@@ -0,0 +1,18 @@
+import Foundation
+import OSLog
+import XPCWrappers
+import SSHProtocolKit
+import CertificateKit
+
+final class SecretiveCertificateParser: NSObject, XPCProtocol {
+
+    private let logger = Logger(subsystem: "com.maxgoedjen.secretive.SecretiveCertificateParser", category: "SecretiveCertificateParser")
+
+    func process(_ data: Data) async throws -> OpenSSHCertificate {
+        let parser = OpenSSHCertificateParser()
+        let result = try parser.parse(data: data)
+        logger.log("Parser parsed certificate")
+        return result
+    }
+
+}
--- a/Sources/SecretiveCertificateParser/main.swift
+++ b/Sources/SecretiveCertificateParser/main.swift
@@ -0,0 +1,7 @@
+import Foundation
+import XPCWrappers
+
+let delegate = XPCServiceDelegate(exportedObject: SecretiveCertificateParser())
+let listener = NSXPCListener.service()
+listener.delegate = delegate
+listener.resume()