Java

HMAC SHA-1 Matching FIPS Examples

See more Encryption Examples

Provides an example of computing an HMAC-SHA1 digest to duplicate the FIPS examples at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf Chilkat2 Java

import com.chilkatsoft.chilkat2.Crypt2;

public class ChilkatExample {

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

        Crypt2 crypt = new Crypt2();

        String strToSign = "Sample #1";

        // 64-byte key
        String key = "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f";

        // The expected result:
        // (from Appendix A.1 at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf )
        String expectedResult = "4f4ca3d5d68ba7cc0a1208c9c61e9c5da0403c0a";

        // Here is the code to duplicate the results:
        crypt.setHashAlgorithm("sha-1");
        crypt.setEncodingMode("hex");
        crypt.setMacAlgorithm("hmac");

        crypt.setMacKeyEncoded(key, "hex");

        String mac = crypt.macStringENC(strToSign);

        System.out.println("Computed: " + mac);
        System.out.println("Expected: " + expectedResult);
    }
}