Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(PHP Extension) RSA Sign Binary Data and Verify (Recover the Original Data)Demonstrates how to RSA sign binary data and then verify/recover the original data. Note: This example uses methods introduced in Chilkat v9.5.0.77.
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Load an RSA private key for signing. $privKey = new CkPrivateKey(); $success = $privKey->LoadEncryptedPemFile('qa_data/pem/rsa_passwd.pem','passwd'); if ($success != true) { print $privKey->lastErrorText() . "\n"; exit; } $rsa = new CkRsa(); $rsa->ImportPrivateKeyObj($privKey); // We have some binary data (in hex) to sign $originalData = '0102030405060708090A'; $bd = new CkBinData(); $bd->AppendEncoded($originalData,'hex'); // If successful, the contents of bd are replaced with the RSA signature. $success = $rsa->OpenSslSignBd($bd); if ($success != true) { print $rsa->lastErrorText() . "\n"; exit; } // Show the RSA signature in base64 print $bd->getEncoded('base64') . "\n"; // ------------------------------------------ // Get the public key from the private key // pubKey is a CkPublicKey $pubKey = $privKey->GetPublicKey(); // Verify the signature and extract the original data. $rsa2 = new CkRsa(); $rsa2->ImportPublicKeyObj($pubKey); $bVerified = $rsa2->OpenSslVerifyBd($bd); print 'signature verified: ' . $bVerified . "\n"; // Show the original data: print 'original data: ' . $bd->getEncoded('hex') . "\n"; ?> |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.