C++ (Cpp) KEY_CAN_ENCRYPT Examples

Example #1

File: write-packet.c Project: ystk/debian-gnutls26

static int
write_pubkey_enc (cdk_stream_t out, cdk_pkt_pubkey_enc_t pke, int old_ctb)
{
  size_t size;
  int rc, nenc;

  assert (out);
  assert (pke);

  if (pke->version < 2 || pke->version > 3)
    return CDK_Inv_Packet;
  if (!KEY_CAN_ENCRYPT (pke->pubkey_algo))
    return CDK_Inv_Algo;

  if (DEBUG_PKT)
    _cdk_log_debug ("write_pubkey_enc:\n");

  nenc = cdk_pk_get_nenc (pke->pubkey_algo);
  size = 10 + calc_mpisize (pke->mpi, nenc);
  rc = pkt_write_head (out, old_ctb, size, CDK_PKT_PUBKEY_ENC);
  if (rc)
    return rc;

  rc = stream_putc (out, pke->version);
  if (!rc)
    rc = write_32 (out, pke->keyid[0]);
  if (!rc)
    rc = write_32 (out, pke->keyid[1]);
  if (!rc)
    rc = stream_putc (out, _cdk_pub_algo_to_pgp (pke->pubkey_algo));
  if (!rc)
    rc = write_mpibuf (out, pke->mpi, nenc);
  return rc;
}

Example #2

/**
 * cdk_pk_encrypt:
 * @pk: the public key
 * @pke: the public key encrypted packet
 * @esk: the actual session key
 *
 * Encrypt the session key in @esk and write its encrypted content
 * into the @pke struct.
 **/
cdk_error_t
cdk_pk_encrypt (cdk_pubkey_t pk, cdk_pkt_pubkey_enc_t pke,
                gcry_mpi_t esk)
{
  gcry_sexp_t s_data = NULL, s_pkey = NULL, s_ciph = NULL;
  gcry_error_t err;
  cdk_error_t rc;
  
  if (!pk || !esk || !pke)
    return CDK_Inv_Value;
  
  if (!KEY_CAN_ENCRYPT (pk->pubkey_algo))
    return CDK_Inv_Algo;

  rc = enckey_to_sexp (&s_data, esk);
  if (!rc)
    rc = pubkey_to_sexp (&s_pkey, pk);
  if (!rc)
    {     
      err = gcry_pk_encrypt (&s_ciph, s_data, s_pkey);
      if (err)
	return map_gcry_error (err);
    }
  if (!rc)
    rc = sexp_to_pubenc (pke, s_ciph);
  
  gcry_sexp_release (s_data);
  gcry_sexp_release (s_pkey);
  gcry_sexp_release (s_ciph);
  return rc;
}