(C) SSH 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_CkJsonObject.h>
#include <C_CkCrypt2.h>
#include <C_CkSecureString.h>
#include <C_CkSsh.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJsonObject json;
    HCkCrypt2 crypt;
    HCkSecureString ssLogin;
    HCkSecureString ssPassword;
    HCkSsh ssh;

    // 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 = CkJsonObject_Create();
    CkJsonObject_LoadFile(json,"qa_data/passwords/ssh.json");

    crypt = CkCrypt2_Create();

    // These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
    CkCrypt2_putCryptAlgorithm(crypt,"aes");
    CkCrypt2_putCipherMode(crypt,"cbc");
    CkCrypt2_putKeyLength(crypt,128);
    CkCrypt2_SetEncodedKey(crypt,"000102030405060708090A0B0C0D0E0F","hex");
    CkCrypt2_SetEncodedIV(crypt,"000102030405060708090A0B0C0D0E0F","hex");
    CkCrypt2_putEncodingMode(crypt,"base64");

    ssLogin = CkSecureString_Create();
    ssPassword = CkSecureString_Create();

    // Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
    // a randomly generated session key.)
    CkCrypt2_DecryptSecureENC(crypt,CkJsonObject_stringOf(json,"ssh_login"),ssLogin);
    CkCrypt2_DecryptSecureENC(crypt,CkJsonObject_stringOf(json,"ssh_password"),ssPassword);

    ssh = CkSsh_Create();

    success = CkSsh_Connect(ssh,"MY-SSH-SERVER-DOMAIN-OR-IP",22);
    if (success != TRUE) {
        printf("%s\n",CkSsh_lastErrorText(ssh));
        CkJsonObject_Dispose(json);
        CkCrypt2_Dispose(crypt);
        CkSecureString_Dispose(ssLogin);
        CkSecureString_Dispose(ssPassword);
        CkSsh_Dispose(ssh);
        return;
    }

    // Authenticate using secure strings
    success = CkSsh_AuthenticateSecPw(ssh,ssLogin,ssPassword);
    if (success != TRUE) {
        printf("%s\n",CkSsh_lastErrorText(ssh));
        CkJsonObject_Dispose(json);
        CkCrypt2_Dispose(crypt);
        CkSecureString_Dispose(ssLogin);
        CkSecureString_Dispose(ssPassword);
        CkSsh_Dispose(ssh);
        return;
    }

    printf("SSH Authentication successful.\n");

    CkSsh_Disconnect(ssh);


    CkJsonObject_Dispose(json);
    CkCrypt2_Dispose(crypt);
    CkSecureString_Dispose(ssLogin);
    CkSecureString_Dispose(ssPassword);
    CkSsh_Dispose(ssh);

    }