EVP_MD_CTX_size
int l = EVP_MD_CTX_size(mctx);
if (EVP_MD_CTX_size(s->s3->handshake_hash) > len)
mac_len = EVP_MD_CTX_size(rp->hash_ctx);
if(EVP_MD_CTX_size(hash->ctx) > (int)maxlen) {
*resultlen = EVP_MD_CTX_size(hash->ctx);
if(EVP_MD_CTX_size(hash->ctx) > (int)maxlen) {
*resultlen = EVP_MD_CTX_size(hash->ctx);