[gnutls-devel] GnuTLS | Add support for loading Ed25519 keys from PKCS#11 and using them (!1200)

[Development of GNU's TLS library]

Dmitry Baryshkov commented on a discussion on lib/pkcs11_write.c: https://gitlab.com/gnutls/gnutls/-/merge_requests/1200#note_302323937

>  		(*a_val)++;
>  
> +		ret = _gnutls_x509_encode_string(ASN1_ETYPE_OCTET_STRING,
> +						 pubkey->params.raw_pub.data,
> +						 pubkey->params.raw_pub.size,
> +						 &ecpoint);
> +		if (ret < 0) {
> +			gnutls_assert();
> +			return ret;
> +		}
> +
>  		a[*a_val].type = CKA_EC_POINT;
> -		a[*a_val].value = pubkey->params.raw_pub.data;
> -		a[*a_val].value_len = pubkey->params.raw_pub.size;
> +		a[*a_val].value = ecpoint.data;
> +		a[*a_val].value_len = ecpoint.size;

I have tried looking into several other PKCS#11 implementations. Neither of YubiHSM2 PKCS11, OpenSC, NSS support Edwards keys for now. I'd suggest dropping a letter to authors of respective PKCS#11 spec for their comments.

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