Java

Demonstrates HMAC SHA256

See more Encryption Examples

Demonstrates HMAC-SHA256. Also demonstrates HMAC-SHA1 and HMAC-MD5. Chilkat2 Java

import com.chilkatsoft.chilkat2.Crypt2;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // Demonstrates how to reproduce the following results found at
        // https://en.wikipedia.org/wiki/Hash-based_message_authentication_code

        // HMAC_SHA256("key", "The quick brown fox jumps over the lazy dog") = 0xf7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8
        // HMAC_MD5("key", "The quick brown fox jumps over the lazy dog")    = 0x80070713463e7749b90c2dc24911e275
        // HMAC_SHA1("key", "The quick brown fox jumps over the lazy dog")   = 0xde7c9b85b8b78aa6bc8a7a36f70a90701c9db4d9

        Crypt2 crypt = new Crypt2();

        crypt.setMacAlgorithm("hmac");
        crypt.setEncodingMode("hex");
        crypt.setMacKeyString("key");
        String sData = "The quick brown fox jumps over the lazy dog";

        crypt.setHashAlgorithm("SHA-256");
        System.out.println("HMAC_SHA256: " + crypt.macStringENC(sData));

        crypt.setHashAlgorithm("MD5");
        System.out.println("HMAC_MD5: " + crypt.macStringENC(sData));

        crypt.setHashAlgorithm("SHA-1");
        System.out.println("HMAC_SHA1: " + crypt.macStringENC(sData));

        // The output is the same (ignore case)
        // HMAC_SHA256: F7BC83F430538424B13298E6AA6FB143EF4D59A14946175997479DBC2D1A3CD8
        // HMAC_MD5: 80070713463E7749B90C2DC24911E275
        // HMAC_SHA1: DE7C9B85B8B78AA6BC8A7A36F70A90701C9DB4D9
    }
}