crypto_sig_verify
ret = crypto_sig_verify(tfm, sig->s, sig->s_size, sig->m, sig->m_size);
return crypto_sig_verify(ctx->child, &sig, sizeof(sig), digest, dlen);
return crypto_sig_verify(ctx->child, &sig_ctx.sig, sizeof(sig_ctx.sig),
err = crypto_sig_verify(tfm, vecs->c, vecs->c_size,