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A crypt algorithm may not be available by returning None.

This commit is contained in:
Brett Cannon 2011-02-22 21:55:51 +00:00
parent daa5799cb8
commit cfbcdbbbf2
1 changed files with 7 additions and 2 deletions
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9
Lib/crypt.py
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@ -53,5 +53,10 @@ METHOD_MD5 = _Method('MD5', '1', 8, 34)
METHOD_SHA256 = _Method('SHA256', '5', 16, 63)
METHOD_SHA512 = _Method('SHA512', '6', 16, 106)
methods = [METHOD_SHA512, METHOD_SHA256, METHOD_MD5, METHOD_CRYPT]
methods[:-1] = [m for m in methods[:-1] if len(crypt('', m)) == m.total_size]
methods = []
for _method in (METHOD_SHA512, METHOD_SHA256, METHOD_MD5):
_result = crypt('', _method)
if _result and len(_result) == _method.total_size:
methods.append(_method)
methods.append(METHOD_CRYPT)
del _result, _method