(Unicode C) SSH Tunnel Authenticate Secure

Demonstrates how to do SSH password authentication with secure strings.

This example requires Chilkat v9.5.0.71 or greater.

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#include <C_CkJsonObjectW.h>
#include <C_CkCrypt2W.h>
#include <C_CkSecureStringW.h>
#include <C_CkSshTunnelW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJsonObjectW json;
    HCkCrypt2W crypt;
    HCkSecureStringW ssLogin;
    HCkSecureStringW ssPassword;
    HCkSshTunnelW tunnel;

    // 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=="
    // }

    json = CkJsonObjectW_Create();
    CkJsonObjectW_LoadFile(json,L"qa_data/passwords/ssh.json");

    crypt = CkCrypt2W_Create();

    // These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
    CkCrypt2W_putCryptAlgorithm(crypt,L"aes");
    CkCrypt2W_putCipherMode(crypt,L"cbc");
    CkCrypt2W_putKeyLength(crypt,128);
    CkCrypt2W_SetEncodedKey(crypt,L"000102030405060708090A0B0C0D0E0F",L"hex");
    CkCrypt2W_SetEncodedIV(crypt,L"000102030405060708090A0B0C0D0E0F",L"hex");
    CkCrypt2W_putEncodingMode(crypt,L"base64");

    ssLogin = CkSecureStringW_Create();
    ssPassword = CkSecureStringW_Create();

    // Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
    // a randomly generated session key.)
    CkCrypt2W_DecryptSecureENC(crypt,CkJsonObjectW_stringOf(json,L"ssh_login"),ssLogin);
    CkCrypt2W_DecryptSecureENC(crypt,CkJsonObjectW_stringOf(json,L"ssh_password"),ssPassword);

    tunnel = CkSshTunnelW_Create();

    success = CkSshTunnelW_Connect(tunnel,L"MY-SSH-SERVER-DOMAIN-OR-IP",22);
    if (success != TRUE) {
        wprintf(L"%s\n",CkSshTunnelW_lastErrorText(tunnel));
        CkJsonObjectW_Dispose(json);
        CkCrypt2W_Dispose(crypt);
        CkSecureStringW_Dispose(ssLogin);
        CkSecureStringW_Dispose(ssPassword);
        CkSshTunnelW_Dispose(tunnel);
        return;
    }

    // Authenticate using secure strings
    success = CkSshTunnelW_AuthenticateSecPw(tunnel,ssLogin,ssPassword);
    if (success != TRUE) {
        wprintf(L"%s\n",CkSshTunnelW_lastErrorText(tunnel));
        CkJsonObjectW_Dispose(json);
        CkCrypt2W_Dispose(crypt);
        CkSecureStringW_Dispose(ssLogin);
        CkSecureStringW_Dispose(ssPassword);
        CkSshTunnelW_Dispose(tunnel);
        return;
    }

    wprintf(L"SSH Tunnel Authentication successful.\n");

    // ...

    CkSshTunnelW_CloseTunnel(tunnel,TRUE);


    CkJsonObjectW_Dispose(json);
    CkCrypt2W_Dispose(crypt);
    CkSecureStringW_Dispose(ssLogin);
    CkSecureStringW_Dispose(ssPassword);
    CkSshTunnelW_Dispose(tunnel);

    }