_PEM_write_bio_PKCS8PrivateKey

var _PEM_write_bio_PKCS8PrivateKey: function(

  bp: PBIO;

  key: PEVP_PKEY;

  enc: PEVP_CIPHER;

  kstr: PIdAnsiChar;

  klen: TIdC_INT;

  cb: ppem_password_cb;

  u: Pointer

):TIdC_INT = Nil;