e_rc4_hmac_md5.c: oops, can't use rc4_hmac_md5_cipher on legacy Intel CPUs.
authorAndy Polyakov <appro@openssl.org>
Wed, 18 Apr 2012 14:50:28 +0000 (14:50 +0000)
committerAndy Polyakov <appro@openssl.org>
Wed, 18 Apr 2012 14:50:28 +0000 (14:50 +0000)
PR: 2792

crypto/evp/e_rc4_hmac_md5.c

index 94c0110..c25b669 100644 (file)
@@ -287,6 +287,8 @@ static EVP_CIPHER r4_hmac_md5_cipher=
 
 const EVP_CIPHER *EVP_rc4_hmac_md5(void)
        {
-       return(&r4_hmac_md5_cipher);
+       extern unsigned int OPENSSL_ia32cap_P[];
+       /* RC4_CHAR flag ------------vvvvv */
+       return(OPENSSL_ia32cap_P[0]&(1<<20) ? NULL : &r4_hmac_md5_cipher);
        }
 #endif