EVP_MD_CTX_get_size
int l = EVP_MD_CTX_get_size(mctx);
if (size < EVP_MD_CTX_get_size(ctx))
sz = EVP_MD_CTX_get_size(ctx);
memcpy(md, digest_ctx->digest_res, EVP_MD_CTX_get_size(ctx));
t = EVP_MD_CTX_get_size(hash);
int n = EVP_MD_CTX_get_size(rl->md_ctx);
t = EVP_MD_CTX_get_size(hash);
mac_size = EVP_MD_CTX_get_size(rl->md_ctx);
ret = EVP_MD_CTX_get_size(ctx);
int hashleni = EVP_MD_CTX_get_size(hdgst);
md_size = EVP_MD_CTX_get_size(handshake_md);