(C++) SSH HSM Public Key Authentication

Demonstrates how to authenticate with an SSH server using public key authentication using an HSM (USB token or smartcard).

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#include <CkPkcs11.h>
#include <CkJsonObject.h>
#include <CkSshKey.h>
#include <CkSsh.h>

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

    // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, MacOs, and other supported operating systems.

    CkPkcs11 pkcs11;

    // This would be a path to a .dylib on MacOS, or a path to a .so shared lib on Linux.
    pkcs11.put_SharedLibPath("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll");
    const char *pin = "0000";
    int userType = 1;

    // Establish a PKCS11 logged-on session using the driver (.so, .dylib, or .dll) as specified in the SharedLibPath above.
    bool success = pkcs11.QuickSession(userType,pin);
    if (success == false) {
        std::cout << pkcs11.lastErrorText() << "\r\n";
        return;
    }

    // Set PKCS11 attributes to find our desired private key object.
    CkJsonObject json;
    json.UpdateString("class","private_key");
    json.UpdateString("label","MySshKey");

    // Get the PKCS11 handle to the private key located on the HSM.
    unsigned long priv_handle = pkcs11.FindObject(json);

    // Get the PKCS11 handle to the corresponding public key located on the HSM.
    json.UpdateString("class","public_key");

    unsigned long pub_handle = pkcs11.FindObject(json);

    CkSshKey key;
    // The key type can be "rsa" or "ec"
    const char *keyType = "rsa";
    success = key.UsePkcs11(pkcs11,priv_handle,pub_handle,keyType);
    if (success == false) {
        std::cout << key.lastErrorText() << "\r\n";
        return;
    }

    CkSsh ssh;

    success = ssh.Connect("example.com",22);
    if (success != true) {
        std::cout << ssh.lastErrorText() << "\r\n";
        return;
    }

    // Authenticate with the SSH server using the login and
    // HSM private key.  (The corresponding public key should've 
    // been installed on the SSH server beforehand.)
    success = ssh.AuthenticatePk("myLogin",key);
    if (success != true) {
        std::cout << ssh.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Public-Key Authentication Successful!" << "\r\n";
    }