explewd/waste-go
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 5 Wiki Activity

fix: challenge nonce must be 32 bytes per YAW/2 §5.1
Build / Build & release (push) Successful in 13m46s
Details

Browse Source 
The anchor was sending a 16-byte nonce. The spec (yaw2.0-protocol.md §5.1
and yaw2-implementation.md §7.1) requires 32 bytes. Any spec-conformant
peer would fail join signature verification against this anchor, breaking
interop. Signature verification was already using the raw nonce bytes
(not hex), so only the allocation size needed changing.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Fredrik Johansson
2026-07-02 18:35:57 +02:00
co-authored by Claude Sonnet 4.6
parent d07342e97e
commit 697a7e614d
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cmd/anchor/main.go
+2 -2
View File
@@ -155,8 +155,8 @@ func (a *anchor) handleWS(w http.ResponseWriter, r *http.Request) {
ctx, cancel := context.WithCancel(r.Context()) ctx, cancel := context.WithCancel(r.Context())
defer cancel() defer cancel()
// Send a challenge nonce immediately. // Send a challenge nonce immediately. §5.1 requires 32 bytes.
nonce := make([]byte, 16) nonce := make([]byte, 32)
rand.Read(nonce) rand.Read(nonce)
nonceHex := hex.EncodeToString(nonce) nonceHex := hex.EncodeToString(nonce)
if err := wsjson.Write(ctx, conn, proto.AnchorMessage{ if err := wsjson.Write(ctx, conn, proto.AnchorMessage{