Zero key-length for HMAC is apparently OK.

f10725a6 · Andy Polyakov · 0f71b77d · f10725a6
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crypto/hmac/hmac.c crypto/hmac/hmac.c +1 -1

未找到文件。
--- a/crypto/hmac/hmac.c
+++ b/crypto/hmac/hmac.c
@@ -89,7 +89,7 @@ void HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
 			}
 		else
 			{
-			OPENSSL_assert(len>0 && len <= (int)sizeof(ctx->key));
+			OPENSSL_assert(len>=0 && len<=(int)sizeof(ctx->key));
 			memcpy(ctx->key,key,len);
 			ctx->key_length=len;
 			}