Java Whirlpool hashing

Question

I found myself in the need to hash something in Java and as I don't understand hashing I'm here.

I already found that there's no simple method for it.

So my question: how is whirlpool hashing done in Java?

EDIT: I was suggested GNU Whirlpool, but I can't get it to work

            Whirlpool wp = new Whirlpool();

            String s = "The quick brown fox jumps over the lazy dog";
            byte[] b = s.getBytes(Charset.forName("UTF-8"));
            wp.update(b, 0, s.length());
            byte[] r = wp.digest();

            String str = new String(r,Charset.forName("UTF-8"));
            System.out.println(str);

And the output is: <?R??XF ????n?g?Tl??H?po??????? m? 5?F ?? y?QhTM?|?I??? Am I missing something? Or did I not understand how it works?

Solve: It seems the digest method outputs raw byte data. I converted it to HEX format using a method from Apache common codec library.

Why not use one of the standard crypto libraries rather than trying to implement your own? — John Dvorak, Jan 09 '14 at 17:27
Standard libraries? I'd be happy to use them. Can I get a name which I could use? — Justas S, Jan 09 '14 at 17:30
`MessageDigest` has most of the crypto tools built into Java. — Louis Wasserman, Jan 09 '14 at 17:30
Second hit on Google: http://docstore.mik.ua/orelly/java-ent/jnut/ch26_01.htm — John Dvorak, Jan 09 '14 at 17:32
Why do need whirlpool hashing specifically? Will any reasonable hash alg work for your needs, or is there a specific requirement for whirlpool? — , Jan 09 '14 at 18:11
The program will connect to my MySQL database for game server, which uses the Whirlpool hash. So if I need to check if the password is correct — Justas S, Jan 09 '14 at 18:13

score 3 · Accepted Answer · answered Jan 09 '14 at 17:32

3

Use GNU Whirlpool. This is a java implementation of Whirlpool from GNU.

answered Jan 09 '14 at 17:32

RaviH

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Could I get an example of it? – Justas S Jan 09 '14 at 17:57
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Is there any possible way of getting a code example of this used in a simple console Java application. I think that it would be good to see it in use. Is there something that has to be imported or is it already built into Java? – Doug Hauf Jul 08 '14 at 14:06

Java Whirlpool hashing

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