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Reduce cost factor for hashing passwords
* Also reduce memory cost
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2 changed files with 2 additions and 2 deletions
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@ -32,7 +32,7 @@ HASH_FUNCTION = 'sha256' # Must be in hashlib.
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# Linear to the hashing time. Adjust to be high but take a reasonable
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# amount of time on your server. Measure with:
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# python -m timeit -s 'import passwords as p' 'p.make_hash("something")'
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COST_FACTOR = 29000
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COST_FACTOR = 10000
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def make_hash(password):
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@ -72,7 +72,7 @@ def pbkdf2_bin(data, salt, iterations=1000, keylen=24, hashfunc=None):
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rv = u = _pseudorandom(salt + _pack_int(block))
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for i in xrange(iterations - 1):
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u = _pseudorandom(''.join(map(chr, u)))
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rv = starmap(xor, izip(rv, u))
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rv = list(starmap(xor, izip(rv, u)))
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buf.extend(rv)
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return ''.join(map(chr, buf))[:keylen]
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