Esempi in C++ (Cpp) per _gnutls_x509_write_pubkey_params

Esempio n. 1

File: common.c Progetto: MihirKulkarni/TLS_extension

/* Encodes and copies the private key parameters into a
 * subjectPublicKeyInfo structure.
 *
 */
int
_gnutls_x509_encode_and_copy_PKI_params (ASN1_TYPE dst,
                                         const char *dst_name,
                                         gnutls_pk_algorithm_t
                                         pk_algorithm, gnutls_pk_params_st * params)
{
  const char *pk;
  gnutls_datum_t der = { NULL, 0 };
  int result;
  char name[128];

  pk = _gnutls_x509_pk_to_oid (pk_algorithm);
  if (pk == NULL)
    {
      gnutls_assert ();
      return GNUTLS_E_UNKNOWN_PK_ALGORITHM;
    }

  /* write the OID
   */
  _asnstr_append_name (name, sizeof (name), dst_name, ".algorithm.algorithm");

  result = asn1_write_value (dst, name, pk, 1);
  if (result != ASN1_SUCCESS)
    {
      gnutls_assert ();
      return _gnutls_asn2err (result);
    }

  result = _gnutls_x509_write_pubkey_params (pk_algorithm, params, &der);
  if (result < 0)
    {
      gnutls_assert ();
      return result;
    }

  _asnstr_append_name (name, sizeof (name), dst_name,
                       ".algorithm.parameters");

  result = asn1_write_value (dst, name, der.data, der.size);

  _gnutls_free_datum (&der);

  if (result != ASN1_SUCCESS)
    {
      gnutls_assert ();
      return _gnutls_asn2err (result);
    }

  result = _gnutls_x509_write_pubkey (pk_algorithm, params, &der);
  if (result < 0)
    {
      gnutls_assert ();
      return result;
    }

  /* Write the DER parameters. (in bits)
   */
  _asnstr_append_name (name, sizeof (name), dst_name,
                       ".subjectPublicKey");
  result = asn1_write_value (dst, name, der.data, der.size * 8);
  _gnutls_free_datum (&der);

  if (result != ASN1_SUCCESS)
    {
      gnutls_assert ();
      return _gnutls_asn2err (result);
    }

  return 0;
}

Esempio n. 2

File: privkey_pkcs8.c Progetto: gnutls/gnutls

/* 
 * Encodes a PKCS #1 private key to a PKCS #8 private key
 * info. The output will be allocated and stored into der. Also
 * the ASN1_TYPE of private key info will be returned.
 */
static int
encode_to_private_key_info(gnutls_x509_privkey_t pkey,
			   gnutls_datum_t * der, ASN1_TYPE * pkey_info)
{
	int result, len;
	uint8_t null = 0;
	const char *oid;
	gnutls_datum_t algo_params = { NULL, 0 };
	gnutls_datum_t algo_privkey = { NULL, 0 };

	oid = gnutls_pk_get_oid(pkey->params.algo);
	if (oid == NULL) {
		gnutls_assert();
		return GNUTLS_E_UNIMPLEMENTED_FEATURE;
	}

	result =
	    _gnutls_x509_write_pubkey_params(&pkey->params, &algo_params);
	if (result < 0) {
		gnutls_assert();
		return result;
	}

	if ((result =
	     asn1_create_element(_gnutls_get_pkix(),
				 "PKIX1.pkcs-8-PrivateKeyInfo",
				 pkey_info)) != ASN1_SUCCESS) {
		gnutls_assert();
		result = _gnutls_asn2err(result);
		goto error;
	}

	/* Write the version.
	 */
	result = asn1_write_value(*pkey_info, "version", &null, 1);
	if (result != ASN1_SUCCESS) {
		gnutls_assert();
		result = _gnutls_asn2err(result);
		goto error;
	}

	/* write the privateKeyAlgorithm
	 * fields. (OID+NULL data)
	 */
	result =
	    asn1_write_value(*pkey_info, "privateKeyAlgorithm.algorithm",
			     oid, 1);
	if (result != ASN1_SUCCESS) {
		gnutls_assert();
		result = _gnutls_asn2err(result);
		goto error;
	}

	result =
	    asn1_write_value(*pkey_info, "privateKeyAlgorithm.parameters",
			     algo_params.data, algo_params.size);
	_gnutls_free_key_datum(&algo_params);

	if (result != ASN1_SUCCESS) {
		gnutls_assert();
		result = _gnutls_asn2err(result);
		goto error;
	}


	/* Write the raw private key
	 */
	result = _encode_privkey(pkey, &algo_privkey);
	if (result < 0) {
		gnutls_assert();
		goto error;
	}

	result =
	    asn1_write_value(*pkey_info, "privateKey", algo_privkey.data,
			     algo_privkey.size);
	_gnutls_free_key_datum(&algo_privkey);

	if (result != ASN1_SUCCESS) {
		gnutls_assert();
		result = _gnutls_asn2err(result);
		goto error;
	}

	if ((pkey->params.pkflags & GNUTLS_PK_FLAG_PROVABLE) && pkey->params.seed_size > 0) {
		gnutls_datum_t seed_info;
		/* rfc8479 attribute encoding */

		result = _x509_encode_provable_seed(pkey, &seed_info);
		if (result < 0) {
			gnutls_assert();
			goto error;
		}

		result = _x509_set_attribute(*pkey_info, "attributes", OID_ATTR_PROV_SEED, &seed_info);
		gnutls_free(seed_info.data);
		if (result < 0) {
			gnutls_assert();
			goto error;
		}
	} else {
		/* Append an empty Attributes field.
		 */
		result = asn1_write_value(*pkey_info, "attributes", NULL, 0);
		if (result != ASN1_SUCCESS) {
			gnutls_assert();
			result = _gnutls_asn2err(result);
			goto error;
		}
	}

	/* DER Encode the generated private key info.
	 */
	len = 0;
	result = asn1_der_coding(*pkey_info, "", NULL, &len, NULL);
	if (result != ASN1_MEM_ERROR) {
		gnutls_assert();
		result = _gnutls_asn2err(result);
		goto error;
	}

	/* allocate data for the der
	 */
	der->size = len;
	der->data = gnutls_malloc(len);
	if (der->data == NULL) {
		gnutls_assert();
		return GNUTLS_E_MEMORY_ERROR;
	}

	result = asn1_der_coding(*pkey_info, "", der->data, &len, NULL);
	if (result != ASN1_SUCCESS) {
		gnutls_assert();
		result = _gnutls_asn2err(result);
		goto error;
	}

	return 0;

      error:
	asn1_delete_structure2(pkey_info, ASN1_DELETE_FLAG_ZEROIZE);
	_gnutls_free_datum(&algo_params);
	_gnutls_free_key_datum(&algo_privkey);
	return result;

}