EVP_CIPHER

type EVP_CIPHER = record

  nid: cint;

  block_size: cint;

  key_len: cint;

  iv_len: cint;

  flags: culong;

  init: EVP_CIPHER_INIT_FUNC;

  do_cipher: EVP_CIPHER_DO_CIPHER_FUNC;

  cleanup: EVP_CIPHER_CLEANUP_FUNC;

  ctx_size: cint;

  set_asn1_parameters: EVP_CIPHER_SET_ASN1_PARAMETERS_FUNC;

  get_asn1_parameters: EVP_CIPHER_GET_ASN1_PARAMETERS_FUNC;

  ctrl: EVP_CIPHER_CTRL_FUNC;

  app_data: Pointer;

end;