[gnutls-devel] GnuTLS | Add support for CNT_IMIT TLS 1.2 GOST cipher suite (!920)

[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/920#note_228572185

> +	i += len;
> +
> +	cek.data = &data[i];
> +	cek.size = ret;
> +
> +	DECR_LEN(data_size, ret);
> +
> +	if (data_size != 0)
> +		return gnutls_assert_val(GNUTLS_E_UNEXPECTED_PACKET_LENGTH);
> +
> +	ret = calc_ukm(session, &ukm);
> +	if (ret < 0)
> +		return gnutls_assert_val(ret);
> +
> +	if (!privkey || privkey->type != GNUTLS_PRIVKEY_X509) {
> +		gnutls_assert();

Now I can answer on HSM usage. VKO operation uses `C_DeriveKey` function, which is an equivalent to `_gnutls_gost_vko_key()` from `lib/vko.c`.

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