(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 <C_CkPkcs11.h>
#include <C_CkJsonObject.h>
#include <C_CkSshKey.h>
#include <C_CkSsh.h>

void ChilkatSample(void)
    {
    HCkPkcs11 pkcs11;
    const char *pin;
    int userType;
    BOOL success;
    HCkJsonObject json;
    unsigned long priv_handle;
    unsigned long pub_handle;
    HCkSshKey key;
    const char *keyType;
    HCkSsh ssh;

    // 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.

    pkcs11 = CkPkcs11_Create();

    // This would be a path to a .dylib on MacOS, or a path to a .so shared lib on Linux.
    CkPkcs11_putSharedLibPath(pkcs11,"C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll");
    pin = "0000";
    userType = 1;

    // Establish a PKCS11 logged-on session using the driver (.so, .dylib, or .dll) as specified in the SharedLibPath above.
    success = CkPkcs11_QuickSession(pkcs11,userType,pin);
    if (success == FALSE) {
        printf("%s\n",CkPkcs11_lastErrorText(pkcs11));
        CkPkcs11_Dispose(pkcs11);
        return;
    }

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

    // Get the PKCS11 handle to the private key located on the HSM.
    priv_handle = CkPkcs11_FindObject(pkcs11,json);

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

    pub_handle = CkPkcs11_FindObject(pkcs11,json);

    key = CkSshKey_Create();
    // The key type can be "rsa" or "ec"
    keyType = "rsa";
    success = CkSshKey_UsePkcs11(key,pkcs11,priv_handle,pub_handle,keyType);
    if (success == FALSE) {
        printf("%s\n",CkSshKey_lastErrorText(key));
        CkPkcs11_Dispose(pkcs11);
        CkJsonObject_Dispose(json);
        CkSshKey_Dispose(key);
        return;
    }

    ssh = CkSsh_Create();

    success = CkSsh_Connect(ssh,"example.com",22);
    if (success != TRUE) {
        printf("%s\n",CkSsh_lastErrorText(ssh));
        CkPkcs11_Dispose(pkcs11);
        CkJsonObject_Dispose(json);
        CkSshKey_Dispose(key);
        CkSsh_Dispose(ssh);
        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 = CkSsh_AuthenticatePk(ssh,"myLogin",key);
    if (success != TRUE) {
        printf("%s\n",CkSsh_lastErrorText(ssh));
        CkPkcs11_Dispose(pkcs11);
        CkJsonObject_Dispose(json);
        CkSshKey_Dispose(key);
        CkSsh_Dispose(ssh);
        return;
    }

    printf("Public-Key Authentication Successful!\n");


    CkPkcs11_Dispose(pkcs11);
    CkJsonObject_Dispose(json);
    CkSshKey_Dispose(key);
    CkSsh_Dispose(ssh);

    }