for (i = 0; i < t->data_len; i++)
T(EVP_VerifyUpdate(md_ctx, &t->data[i], 1));
err = EVP_VerifyFinal(md_ctx, sig, siglen, pkey);
for (i = 0; i < t->data_len; i++)
T(EVP_VerifyUpdate(md_ctx, &t->data[i], 1));
err = EVP_VerifyFinal(md_ctx, sig, siglen, pkey);