Java和python中的Whirlpool哈希给出不同的结果

Question

I have two projects. panager and panager-android . I use the whirlpool hash algorithm and with the same data panager gives different results than panager-android. panager is written in python and panager-android (guess) in java. I'm ultra-new in java so take it easy :P

In python I use a module that I found on the net (whirlpool.py) and in java I use the jacksum library.

Answer 1

There are different versions of the Whirlpool spec which generate different output for the same input. It looks like whirlpool.py might be implementing the original Whirlpool (referred to as "Whirlpool-0"), whereas in panager-android you use Whirlpool-2:

AbstractChecksum encode = JacksumAPI.getChecksumInstance("whirlpool2");

Try changing that to "whirlpool0" and see if it matches your Python implementation now. Failing that, try "whirlpool1".

Wikipedia has known Whirlpool hashes from each version for a given test input which you may use to identify the version of a questioned Whirlpool implementation, or find out if it's just entirely wrong and broken.