Dart

Use PuTTY Key for SFTP Authentication

See more SFTP Examples

Demonstrates how to authenticate with a username + .ppk PuTTY private key for SFTP authentication. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final sftp = CkSFtp();

  // Load a .ppk PuTTY private key.
  final puttyKey = CkSshKey();
  final ppkText = puttyKey.loadText('qa_data/ppk/putty_private_secret.ppk');

  // The ppkText contains this content:

  // 	PuTTY-User-Key-File-2: ssh-rsa
  // 	Encryption: aes256-cbc
  // 	Comment: rsa-key-20170126
  // 	Public-Lines: 6
  // 	AAAAB3NzaC1yc2EAAAABJQAAAQEAx+52s7vvaZ8rT2UdFZWlSUVDHDQ+5ZRFvgRW
  // 	6nm2sO1c9WqNg7u2PQL4jeKSDX2XWcMnpleALz2x8Rr4rMy5E1iZzvWov8VtFd8l
  // 	fa9HOkgEeJB3VFuYR3NlnD3eyCoYJYPVpHJHrIeui2WZs5vQ76HDe+th8+z5Ald4
  // 	zPw3p2c6ZJpBrkSBM67hWokoBDi23c7NhszDHhJBrv+B98cQxnagI1PUKqN7E8Vg
  // 	bNtBI8beIMHyI69up9G1AXSEi0cGIjYNx9RNUPau1mRk/SvfqxgWkAjM005lj7hc
  // 	bOsjbdKK3T2NtrKTaYjEiXlEXcj1iGuApsD/m73pYaEJB3Nd7w==
  // 	Private-Lines: 14
  // 	MoaDbq0owouN/7Z9Pga0favDhM2bSEgMErJBxdDmNUXIVVcUoLiD/Ps1RA+BeBBX
  // 	wxqKUt9PqLy/pnafPR/i2xjJiQtQ0CWkPxND16Gi1dqLzmbQYYl1ev4+LzuG0zNX
  // 	HDGMvRiwagY7mY+F1tUjBYfOL6z8XHw4m40YcY1QorOO+0MMzAVT5Hkg8YyXW209
  // 	B/V/LRADFMVA2BlL39y11cb5ZpFStPH/waYUMY+2w1ZmJZ7dcRoMjuKmY+YE/tUx
  // 	n9X3P0qTNSbw6e6sMG3Dhr1vfoJUQWApUliD6GpUiCeIvXBcVqG8Vsfq9XADsPl0
  // 	+nFAwjSZflywcB7/FwhGb7q5UmcJK06SzoMl7Og5e3g7NCs3yNNQIv+qCpDjhxrA
  // 	hpT03mbipu7OXCZDeUwUhMGJAmYHE5iqm1rPCsSVbaMgpxhCWf01Cx4gLx3aMvn4
  // 	MdylA31GuL3wSxcWTslrOI8+449lZN/qZEnGEZkYTrnlu123jTqsAWMMtuHSz2Ig
  // 	6GA89oTdlppkNflhNH3OJ85kMUrc3p/ZBMdndz8jTDTljmJjHR5oNMoShFof115A
  // 	nWjUHqBwCgcubLYyH3afDvBTOhtl0tJ9Oby0wJlOAGnCXiPSDbF/y7J7xml/PS9t
  // 	XlSVNxtAY15NDO6Fp96sBVfKuJsfJ90PzdBom4ikIuf7sMwtElrHHLuYfcXJQYLp
  // 	G5jBmqDgnirosVPEBIxlxFzz/HCRmdU+tsYg46gqI4R5UpKUe8WSaJoZkDGsrqhm
  // 	e+1SJaBuafR4v2bx/bV414Hg7LGQosK2S3crxH4UgZl+g02vWznZfBH+9CmHvKDR
  // 	AxfcKOTzsaILKJtQPV81lmJ45sARYMcB5jMiE4kBg56hiXouChsvKkm55WVcW1E+
  // 	Private-MAC: 17512c9f7582c1d9c3ae2b01b4d67a6b1dbd1d0e

  // "secret" is the actual password for the above PPK.
  puttyKey.password = 'secret';
  try {
    puttyKey.fromPuttyPrivateKey(ppkText);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final sshHostname = 'sftp.example.com';
  final sshPort = 22;

  // Connect to an SSH/SFTP server
  try {
    sftp.connect(sshHostname, sshPort);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Authenticate with the SSH server using a username + private key.
  // (The private key serves as the password.  The username identifies
  // the SSH user account on the server.)
  try {
    sftp.authenticatePk('mySshLogin', puttyKey);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('OK, the connection and authentication with the SSH server is completed.');

  // This example is only to show the connection + authentication using a PuTTY private key...
}