From c12025f87bb4294468619ee47f3fdc2288a0f823 Mon Sep 17 00:00:00 2001
From: ss49919201 <sakashin10291029@gmail.com>
Date: Sun, 24 Dec 2023 10:50:45 +0900
Subject: [PATCH] fix: return ErrHashUnavailable when hash is unavailable

---
 hmac.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hmac.go b/hmac.go
index 96c62722..594ca019 100644
--- a/hmac.go
+++ b/hmac.go
@@ -91,7 +91,7 @@ func (m *SigningMethodHMAC) Verify(signingString string, sig []byte, key interfa
 func (m *SigningMethodHMAC) Sign(signingString string, key interface{}) ([]byte, error) {
 	if keyBytes, ok := key.([]byte); ok {
 		if !m.Hash.Available() {
-			return nil, newError("HMAC sign expects []byte", ErrInvalidKeyType)
+			return nil, ErrHashUnavailable
 		}
 
 		hasher := hmac.New(m.Hash.New, keyBytes)