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(Unicode C) SSH Authenticate using Smart Card Private KeySee more SSH ExamplesDemonstrates how to use a private key stored on an HSM (smartcard or token) for SSH public-key authentication. (Public-key authentication means the client, which is your application, uses the private key, while the corresponding public key is installed on the server under your SSH account.) Note: This example requires Chilkat v9.5.0.96 or later.
#include <C_CkPkcs11W.h> #include <C_CkJsonObjectW.h> #include <C_CkSshKeyW.h> #include <C_CkSshW.h> void ChilkatSample(void) { HCkPkcs11W pkcs11; const wchar_t *pin; int userType; BOOL success; HCkJsonObjectW jsonTemplate; unsigned long privKeyHandle; unsigned long pubKeyHandle; HCkSshKeyW sshKey; HCkSshW ssh; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems. pkcs11 = CkPkcs11W_Create(); // Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM. // For example: CkPkcs11W_putSharedLibPath(pkcs11,L"C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS11.dll"); // Use your HSM's PIN. pin = L"0000"; // Normal user = 1 userType = 1; // Establish a logged-on user session with the HSM. success = CkPkcs11W_QuickSession(pkcs11,userType,pin); if (success == FALSE) { wprintf(L"%s\n",CkPkcs11W_lastErrorText(pkcs11)); CkPkcs11W_Dispose(pkcs11); return; } // Provide a template to find a PKCS11 object. jsonTemplate = CkJsonObjectW_Create(); // Find an RSA private key with the label "MySshKey". // Here's an example of how the key was originally imported: // PKCS11 Import SSH Key CkJsonObjectW_UpdateString(jsonTemplate,L"class",L"private_key"); CkJsonObjectW_UpdateString(jsonTemplate,L"key_type",L"rsa"); CkJsonObjectW_UpdateString(jsonTemplate,L"label",L"MySshKey"); privKeyHandle = CkPkcs11W_FindObject(pkcs11,jsonTemplate); if (privKeyHandle == 0) { wprintf(L"%s\n",CkPkcs11W_lastErrorText(pkcs11)); CkPkcs11W_Dispose(pkcs11); CkJsonObjectW_Dispose(jsonTemplate); return; } // The private key handle is only valid during the PKCS11 session. // If you wish to use the private key in another PKCS11 session, // you'll first need to find it. See: wprintf(L"private key handle: %u\n",privKeyHandle); // We'll also need the PKCS11 public key handle // Modify the template by updating the "class" to "public_key" CkJsonObjectW_UpdateString(jsonTemplate,L"class",L"public_key"); pubKeyHandle = CkPkcs11W_FindObject(pkcs11,jsonTemplate); if (pubKeyHandle == 0) { wprintf(L"%s\n",CkPkcs11W_lastErrorText(pkcs11)); CkPkcs11W_Dispose(pkcs11); CkJsonObjectW_Dispose(jsonTemplate); return; } wprintf(L"public key handle: %u\n",pubKeyHandle); // Create an empty SSH key object, and tell it to use the PKCS11 handles. // We also need to indicate the key type. sshKey = CkSshKeyW_Create(); success = CkSshKeyW_UsePkcs11(sshKey,pkcs11,privKeyHandle,pubKeyHandle,L"rsa"); if (success == FALSE) { wprintf(L"%s\n",CkSshKeyW_lastErrorText(sshKey)); CkPkcs11W_Dispose(pkcs11); CkJsonObjectW_Dispose(jsonTemplate); CkSshKeyW_Dispose(sshKey); return; } // Create an SSH object and authenticate using the SSH key, which will utilize the existing PKCS11 session. ssh = CkSshW_Create(); success = CkSshW_Connect(ssh,L"my-ssh-server.com",22); if (success == FALSE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkPkcs11W_Dispose(pkcs11); CkJsonObjectW_Dispose(jsonTemplate); CkSshKeyW_Dispose(sshKey); CkSshW_Dispose(ssh); return; } // This is where the PKCS11 private key on the smart card is used. success = CkSshW_AuthenticatePk(ssh,L"your_ssh_username",sshKey); if (success == FALSE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkPkcs11W_Dispose(pkcs11); CkJsonObjectW_Dispose(jsonTemplate); CkSshKeyW_Dispose(sshKey); CkSshW_Dispose(ssh); return; } // Do whatever it is your app needs to do using the authenticated SSH session.... // ... // ... CkSshW_Disconnect(ssh); CkPkcs11W_Logout(pkcs11); CkPkcs11W_CloseSession(pkcs11); CkPkcs11W_Dispose(pkcs11); CkJsonObjectW_Dispose(jsonTemplate); CkSshKeyW_Dispose(sshKey); CkSshW_Dispose(ssh); } |
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