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Wrapper for SpookyHash V2

Project description

SpookyHash V2 is a fast x64 targeted hash developed by Bob Jenkins. This python library is a wrapper around Bob Jenkin’s public domain c++ implementation (current as of August 2012).

In python2 results are all long type for consistency despite the fact that 32bit ints do not need to be.

The bit width features are a convenience to save a masking operation if you need shorter hashes. There isn’t a significant performance difference between the hash size options as they are all computed internally as 128bit hashes.

Usage

>>> from spooky import hash128, hash64, hash32
>>> s = 'this is only a test...'
>>> hash128(s) #128bit python int from 2 unsigned long long ints in c
94655121727368234505791352840874203973
>>> hash64(s) #64bit int
13961228348271205189
>>> hash32(s) #32bit int
2261883717
>>> hash32(s) == hash64(s) & 0xffffffff == hash128(s) & 0xffffffff
True
>>> from binascii import hexlify #if you prefer hex strings to ints
>>> hexlify(hash128(s).to_bytes(16, 'little'))
b'459bd186363fc0c1f1da8d27d0e93547'

Project details


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Files for spooky, version 2.0.0
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