From 9de974e88b7fe250f35ff6397b6166bfb60f28e3 Mon Sep 17 00:00:00 2001
From: sneak <sneak@sneak.berlin>
Date: Tue, 26 Oct 2021 02:19:06 -0700
Subject: [PATCH] add more notes to protobuf

---
 proto/mf.proto | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/proto/mf.proto b/proto/mf.proto
index aedc477..d18b46c 100644
--- a/proto/mf.proto
+++ b/proto/mf.proto
@@ -9,8 +9,11 @@ message MFFile {
   }
   Version version = 1;
   bytes innerMessage = 2;
+
+  // these are used solely to detect corruption/truncation
+  // and not for cryptographic integrity.
   uint64 size = 3;
-  bytes crc32 = 4;
+  bytes sha256 = 4;
 
   // think we might use gosignify instead of gpg:
   // github.com/frankbraun/gosignify
@@ -25,7 +28,10 @@ message MFFile {
 
 message MFFilePath {
     string path = 1;
-    // FIXME checksum/hash here
+    string ipfsHash = 2; // this is the DAG version that you can `ipfs get`
+    // more info: https://ethereum.stackexchange.com/questions/44506/ipfs-hash-algorithm/53233
+    bytes multiHash = 3; //this must be sha256 for now
+    optional string mimeType = 4;
 }
 
 message MFFileInner {