btcec/schnorr/musig2: always pass in priv key for early nonce gen

This helps mitigate an issue discovered in musig2 under certain scenarios: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022-October/021000.html.
btcsuite · Oct 25, 2022 · eef9fbc · eef9fbc
1 parent 323871f
commit eef9fbc
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/btcec/schnorr/musig2/context.go b/btcec/schnorr/musig2/context.go
@@ -239,7 +239,9 @@ func NewContext(signingKey *btcec.PrivateKey, shouldSort bool,
 		// are known.
 		if opts.earlyNonce {
 			var err error
-			ctx.sessionNonce, err = GenNonces()
+			ctx.sessionNonce, err = GenNonces(
+				WithNonceSecretKeyAux(signingKey),
+			)
 			if err != nil {
 				return nil, err
 			}