Exemplos de _gnutls_x509_get_pk_algorithm em C++ (Cpp)

Exemplo n.º 1

/**
  * gnutls_x509_crq_get_pk_algorithm - This function returns the certificate request's PublicKey algorithm
  * @crq: should contain a gnutls_x509_crq_t structure
  * @bits: if bits is non null it will hold the size of the parameters' in bits
  *
  * This function will return the public key algorithm of a PKCS \#10
  * certificate request.
  *
  * If bits is non null, it should have enough size to hold the parameters
  * size in bits. For RSA the bits returned is the modulus.
  * For DSA the bits returned are of the public
  * exponent.
  *
  * Returns a member of the gnutls_pk_algorithm_t enumeration on success,
  * or a negative value on error.
  *
  **/
int
gnutls_x509_crq_get_pk_algorithm (gnutls_x509_crq_t crq, unsigned int *bits)
{
    int result;

    if (crq == NULL)
    {
        gnutls_assert ();
        return GNUTLS_E_INVALID_REQUEST;
    }

    result =
        _gnutls_x509_get_pk_algorithm (crq->crq,
                                       "certificationRequestInfo.subjectPKInfo",
                                       bits);
    if (result < 0)
    {
        gnutls_assert ();
    }

    return result;
}

Exemplo n.º 2

/* Extracts DSA and RSA parameters from a certificate.
 */
int
_gnutls_get_asn_mpis (ASN1_TYPE asn, const char *root,
                      bigint_t * params, int *params_size)
{
  int result;
  char name[256];
  gnutls_datum_t tmp = { NULL, 0 };
  gnutls_pk_algorithm_t pk_algorithm;

  result = _gnutls_x509_get_pk_algorithm (asn, root, NULL);
  if (result < 0)
    {
      gnutls_assert ();
      return result;
    }

  pk_algorithm = result;

  /* Read the algorithm's parameters
   */
  _asnstr_append_name (name, sizeof (name), root, ".subjectPublicKey");
  result = _gnutls_x509_read_value (asn, name, &tmp, 2);

  if (result < 0)
    {
      gnutls_assert ();
      return result;
    }

  switch (pk_algorithm)
    {
    case GNUTLS_PK_RSA:
      /* params[0] is the modulus,
       * params[1] is the exponent
       */
      if (*params_size < RSA_PUBLIC_PARAMS)
        {
          gnutls_assert ();
          /* internal error. Increase the bigint_ts in params */
          result = GNUTLS_E_INTERNAL_ERROR;
          goto error;
        }

      if ((result =
           _gnutls_x509_read_rsa_params (tmp.data, tmp.size, params)) < 0)
        {
          gnutls_assert ();
          goto error;
        }
      *params_size = RSA_PUBLIC_PARAMS;

      break;
    case GNUTLS_PK_DSA:
      /* params[0] is p,
       * params[1] is q,
       * params[2] is q,
       * params[3] is pub.
       */

      if (*params_size < DSA_PUBLIC_PARAMS)
        {
          gnutls_assert ();
          /* internal error. Increase the bigint_ts in params */
          result = GNUTLS_E_INTERNAL_ERROR;
          goto error;
        }

      if ((result =
           _gnutls_x509_read_dsa_pubkey (tmp.data, tmp.size, params)) < 0)
        {
          gnutls_assert ();
          goto error;
        }

      /* Now read the parameters
       */
      _gnutls_free_datum (&tmp);

      _asnstr_append_name (name, sizeof (name), root,
                           ".algorithm.parameters");
      result = _gnutls_x509_read_value (asn, name, &tmp, 0);

      /* FIXME: If the parameters are not included in the certificate
       * then the issuer's parameters should be used. This is not
       * done yet.
       */

      if (result < 0)
        {
          gnutls_assert ();
          goto error;
        }

      if ((result =
           _gnutls_x509_read_dsa_params (tmp.data, tmp.size, params)) < 0)
        {
          gnutls_assert ();
          goto error;
        }
      *params_size = DSA_PUBLIC_PARAMS;

      break;

    default:
      /* other types like DH
       * currently not supported
       */
      gnutls_assert ();
      result = GNUTLS_E_X509_CERTIFICATE_ERROR;
      goto error;
    }

  result = 0;

error:
  _gnutls_free_datum (&tmp);
  return result;
}