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(Android™) RSA Sign Using Private Key from .pfx/.p12 to Base64 SignatureSee more RSA ExamplesDemonstrates how to RSA sign something using a private key loaded from a .pfx/.p12. The RSA signature is returned in Base64 encoded format.
// Important: Don't forget to include the call to System.loadLibrary // as shown at the bottom of this code sample. package com.test; import android.app.Activity; import com.chilkatsoft.*; import android.widget.TextView; import android.os.Bundle; public class SimpleActivity extends Activity { private static final String TAG = "Chilkat"; // Called when the activity is first created. @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkRsa rsa = new CkRsa(); // Load the .pfx/.p12 CkPfx pfx = new CkPfx(); boolean success = pfx.LoadPfxFile("qa_data/pfx/myKey.p12","myPassword"); if (success != true) { Log.i(TAG, pfx.lastErrorText()); return; } // Get the default private key. CkPrivateKey privKey = pfx.GetPrivateKey(0); if (pfx.get_LastMethodSuccess() != true) { Log.i(TAG, pfx.lastErrorText()); return; } // Import the private key into the RSA component: success = rsa.ImportPrivateKeyObj(privKey); if (success != true) { Log.i(TAG, rsa.lastErrorText()); return; } // Get the signature in base64 rsa.put_EncodingMode("base64"); String strData = "This is the string to be signed."; // Sign the string using the sha256 hash algorithm. // Other valid choices are "sha384", "sha512", "sha-1", "md2" and "md5". String base64Sig = rsa.signStringENC(strData,"sha256"); Log.i(TAG, base64Sig); Log.i(TAG, "Success!"); } static { System.loadLibrary("chilkat"); // Note: If the incorrect library name is passed to System.loadLibrary, // then you will see the following error message at application startup: //"The application <your-application-name> has stopped unexpectedly. Please try again." } } |
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