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
(Java) HOTP Algorithm: HMAC-Based One-Time Password AlgorithmDemonstrates how to generate an HMAC one-time password (HOTP) as specified in RFC 4226. Note: This example requires Chilkat v9.5.0.77 or greater.
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 example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkCrypt2 crypt = new CkCrypt2(); // Duplicate the following results from RFC 4226 // Appendix D - HOTP Algorithm: Test Values // // The following test data uses the ASCII string // "12345678901234567890" for the secret: // // Secret = 0x3132333435363738393031323334353637383930 // // Truncated // Count Hexadecimal Decimal HOTP // 0 4c93cf18 1284755224 755224 // 1 41397eea 1094287082 287082 // 2 82fef30 137359152 359152 // 3 66ef7655 1726969429 969429 // 4 61c5938a 1640338314 338314 // 5 33c083d4 868254676 254676 // 6 7256c032 1918287922 287922 // 7 4e5b397 82162583 162583 // 8 2823443f 673399871 399871 // 9 2679dc69 645520489 520489 String secret = "12345678901234567890"; int count; for (count = 0; count <= 9; count++) { String counterHex = crypt.encodeInt(count,8,false,"hex"); String hotp = crypt.hotp(secret,"ascii",counterHex,6,-1,"sha1"); System.out.println(count + " HOTP = " + hotp); } // Output is: // 0 HOTP = 755224 // 1 HOTP = 287082 // 2 HOTP = 359152 // 3 HOTP = 969429 // 4 HOTP = 338314 // 5 HOTP = 254676 // 6 HOTP = 287922 // 7 HOTP = 162583 // 8 HOTP = 399871 // 9 HOTP = 520489 } } |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.