[gnutls-devel] GnuTLS | WIP: GOST key exchange support (!1097)

[Development of GNU's TLS library]

Dmitry Eremin-Solenikov commented on a discussion on lib/auth/vko_gost.c: https://gitlab.com/gnutls/gnutls/merge_requests/1097#note_239307751

> +		}
> +
> +		has_pcert = 1;
> +	}
> +
> +	ret = _gnutls_gost_keytrans_decrypt(has_pcert ? &peer_cert.pubkey->params : NULL,
> +					    &privkey->key.x509->params,
> +					    &cek, &ukm, &session->key.key);
> +	if (ret < 0) {
> +		gnutls_assert();
> +		_gnutls_free_datum(&ukm);
> +		goto cleanup;
> +	}
> +
> +	if (ret == 0)
> +		session->internals.hsk_flags &= ~HSK_CRT_VRFY_EXPECTED;

It's necessary because otherwise a client will expect server's CertificateVerify message. However with this KX a server won't send one.

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