C++

SSH Authenticate Secure

Demonstrates how to do SSH password authentication with secure strings.

This example requires Chilkat v9.5.0.71 or greater.

C++

#include <CkJsonObject.h>
#include <CkCrypt2.h>
#include <CkSecureString.h>
#include <CkSsh.h>

void ChilkatSample(void)
    {
    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=="
    // }

    CkJsonObject json;
    json.LoadFile("qa_data/passwords/ssh.json");

    CkCrypt2 crypt;

    // These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
    crypt.put_CryptAlgorithm("aes");
    crypt.put_CipherMode("cbc");
    crypt.put_KeyLength(128);
    crypt.SetEncodedKey("000102030405060708090A0B0C0D0E0F","hex");
    crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex");
    crypt.put_EncodingMode("base64");

    CkSecureString ssLogin;
    CkSecureString ssPassword;

    // 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);

    CkSsh ssh;

    success = ssh.Connect("MY-SSH-SERVER-DOMAIN-OR-IP",22);
    if (success != true) {
        std::cout << ssh.lastErrorText() << "\r\n";
        return;
    }

    // Authenticate using secure strings
    success = ssh.AuthenticateSecPw(ssLogin,ssPassword);
    if (success != true) {
        std::cout << ssh.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "SSH Authentication successful." << "\r\n";

    ssh.Disconnect();
    }