diff options
Diffstat (limited to 'crypto/evp/e_rc4_hmac_md5.c')
| -rw-r--r-- | crypto/evp/e_rc4_hmac_md5.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/crypto/evp/e_rc4_hmac_md5.c b/crypto/evp/e_rc4_hmac_md5.c index 7c4bd34..1ba690d 100644 --- a/crypto/evp/e_rc4_hmac_md5.c +++ b/crypto/evp/e_rc4_hmac_md5.c @@ -257,7 +257,12 @@ static int rc4_hmac_md5_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, case EVP_CTRL_AEAD_TLS1_AAD: { unsigned char *p = ptr; - unsigned int len = p[arg - 2] << 8 | p[arg - 1]; + unsigned int len; + + if (arg != EVP_AEAD_TLS1_AAD_LEN) + return -1; + + len = p[arg - 2] << 8 | p[arg - 1]; if (!ctx->encrypt) { len -= MD5_DIGEST_LENGTH; |