external/secretive
1
0
Fork 0
mirror of https://github.com/maxgoedjen/secretive.git synced 2026-03-05 17:27:24 +01:00
Code Issues Projects Releases Wiki Activity

Supporting different EC sizes, RSA not working yet

Browse Source
This commit is contained in:
Max Goedjen
2020-03-08 22:17:59 -07:00
parent 603d021939
commit 945907cfd4
8 changed files with 94 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
SecretAgent/Agent.swift
View File

@@ -65,7 +65,7 @@ extension Agent {
for secret in secrets {
let keyBlob = writer.data(secret: secret)
keyData.append(writer.lengthAndData(of: keyBlob))
let curveData = OpenSSHKeyWriter.Constants.curveType.data(using: .utf8)!
let curveData = writer.curveType(for: secret.algorithm, length: secret.keySize).data(using: .utf8)!
keyData.append(writer.lengthAndData(of: curveData))
}
os_log(.debug, "Agent enumerated %@ identities", secrets.count as NSNumber)
@@ -92,13 +92,28 @@ extension Agent {
let derSignature = try store.sign(data: dataToSign, with: secret)
// TODO: Move this
notifier.notify(accessTo: secret)
let curveData = OpenSSHKeyWriter.Constants.curveType.data(using: .utf8)!
let curveData = writer.curveType(for: secret.algorithm, length: secret.keySize).data(using: .utf8)!
// Convert from DER formatted rep to raw (r||s)
let signature = try CryptoKit.P256.Signing.ECDSASignature(derRepresentation: derSignature)
let rawLength = signature.rawRepresentation.count/2
let r = signature.rawRepresentation[0..<rawLength]
let s = signature.rawRepresentation[rawLength...]
let rawRepresentation: Data
switch (secret.algorithm, secret.keySize) {
case (.ellipticCurve, 256):
rawRepresentation = try CryptoKit.P256.Signing.ECDSASignature(derRepresentation: derSignature).rawRepresentation
case (.ellipticCurve, 384):
rawRepresentation = try CryptoKit.P384.Signing.ECDSASignature(derRepresentation: derSignature).rawRepresentation
case (.rsa, 1024):
fatalError()
case (.rsa, 2048):
fatalError()
default:
fatalError()
}
let rawLength = rawRepresentation.count/2
let r = rawRepresentation[0..<rawLength]
let s = rawRepresentation[rawLength...]
var signatureChunk = Data()
signatureChunk.append(writer.lengthAndData(of: r))