Ejemplo n.º 1
0
static int pkey_gost_ec_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig,
                                size_t *siglen, const unsigned char *tbs,
                                size_t tbs_len)
{
    DSA_SIG *unpacked_sig = NULL;
    EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
    int order = 0;

    if (!siglen)
        return 0;
    if (!pkey)
        return 0;

    switch (EVP_PKEY_base_id(pkey)) {
    case NID_id_GostR3410_2001:
    case NID_id_GostR3410_2012_256:
        order = 64;
        break;
    case NID_id_GostR3410_2012_512:
        order = 128;
        break;
    default:
        return 0;
    }

    if (!sig) {
        *siglen = order;
        return 1;
    }
    unpacked_sig = gost_ec_sign(tbs, tbs_len, EVP_PKEY_get0(pkey));
    if (!unpacked_sig) {
        return 0;
    }
    return pack_sign_cp(unpacked_sig, order / 2, sig, siglen);
}
Ejemplo n.º 2
0
static int pkey_gost01_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
	const unsigned char *tbs, size_t tbs_len)
	{
	DSA_SIG *unpacked_sig=NULL;
	EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
	if (!siglen) return 0;
	if (!sig)
		{
		*siglen= 64; /* better to check size of curve order*/
		return 1;
		}	
	unpacked_sig = gost2001_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
	if (!unpacked_sig)
		{
		return 0;
		}
	return pack_sign_cp(unpacked_sig,32,sig,siglen);
	}