Chilkat • HOME • Android™ • AutoIt • C • C# • C++ • Chilkat2-Python • CkPython • Classic ASP • DataFlex • Delphi DLL • Go • Java • Node.js • Objective-C • PHP Extension • Perl • PowerBuilder • PowerShell • PureBasic • Ruby • SQL Server • Swift • Tcl • Unicode C • Unicode C++ • VB.NET • VBScript • Visual Basic 6.0 • Visual FoxPro • Xojo Plugin
(Java) Duplicate Java Verify RSA SignatureDemonstrates how to duplicate a snippet of Java code that verifies an RSA signature.
import com.chilkatsoft.*; public class ChilkatExample { static { try { System.loadLibrary("chilkat"); } catch (UnsatisfiedLinkError e) { System.err.println("Native code library failed to load.\n" + e); System.exit(1); } } public static void main(String argv[]) { // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This example duplicates the following Java code: // import com.sun.org.apache.xml.internal.security.utils.Base64; // import java.io.ByteArrayInputStream; // import java.security.PublicKey; // import java.security.Signature; // import java.security.cert.CertificateFactory; // import java.security.cert.X509Certificate; // public class validateSazetak { // public static void main(String[] args) { // String signatureAlgorithm = "SHA256withRSA"; // String base64DataToBeSigned = "Hlp...LE4="; // String base64Certificate = "MII...TlQ=="; // String base64Signature = "I00...pZA=="; // try { // CertificateFactory cf; // X509Certificate certificate = null; // cf = CertificateFactory.getInstance("X.509"); // certificate = (X509Certificate) cf.generateCertificate(new // ByteArrayInputStream(Base64.decode(base64Certificate))); // // Signature signature = Signature.getInstance(signatureAlgorithm, "SunRsaSign"); // PublicKey pk = (PublicKey) certificate.getPublicKey(); // signature.initVerify(pk); // // byte[] hashBytes = Base64.decode(base64DataToBeSigned); // signature.update(hashBytes); // // byte[] sigBytes = Base64.decode(base64Signature); // boolean validity = signature.verify(sigBytes); // System.out.println("Is valid signature:" + validity); // } catch (Exception e) { // System.out.println(e); // } // } String base64DataToBeSigned = "Hlp...LE4="; String base64Certificate = "MII...TlQ=="; String base64Signature = "I00...pZA=="; CkCert cert = new CkCert(); boolean success = cert.LoadFromBase64(base64Certificate); if (success == false) { System.out.println(cert.lastErrorText()); return; } CkRsa rsa = new CkRsa(); success = rsa.SetX509Cert(cert,false); if (success == false) { System.out.println(rsa.lastErrorText()); return; } rsa.put_EncodingMode("base64"); success = rsa.VerifyStringENC(base64DataToBeSigned,"sha256",base64Signature); if (success == false) { System.out.println(rsa.lastErrorText()); return; } System.out.println("Signature verified."); } } |
© 2000-2025 Chilkat Software, Inc. All Rights Reserved.