C#

SFTP Authenticate Secure

Demonstrates how to do SFTP password authentication with secure strings.

This example requires Chilkat v9.5.0.71 or greater.

C#

bool success = false;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  Imagine we've previously saved our encrypted login and password within a JSON config file
//  that contains this:

//  {
//    "ssh_login": "2+qylFfC56Ck7OQQt/U2/w==",
//    "ssh_password": "5neIq9Jmn0E3p71N6Yc8TA=="
//  }

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.LoadFile("qa_data/passwords/ssh.json");

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

//  These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
crypt.CryptAlgorithm = "aes";
crypt.CipherMode = "cbc";
crypt.KeyLength = 128;
crypt.SetEncodedKey("000102030405060708090A0B0C0D0E0F","hex");
crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex");
crypt.EncodingMode = "base64";

Chilkat.SecureString ssLogin = new Chilkat.SecureString();
Chilkat.SecureString ssPassword = new Chilkat.SecureString();

//  Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
//  a randomly generated session key.)
crypt.DecryptSecureENC(json.StringOf("ssh_login"),ssLogin);
crypt.DecryptSecureENC(json.StringOf("ssh_password"),ssPassword);

Chilkat.SFtp sftp = new Chilkat.SFtp();

success = sftp.Connect("MY-SSH-SERVER-DOMAIN-OR-IP",22);
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

//  Authenticate using secure strings
success = sftp.AuthenticateSecPw(ssLogin,ssPassword);
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

Debug.WriteLine("SFTP Authentication successful.");

sftp.Disconnect();