Last change
on this file since 1591 was
1,
checked in by myroslav, 19 years ago
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Building directory structure
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-
Property svn:eol-style set to
native
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File size:
533 bytes
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Rev | Line | |
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[1] | 1 | # xor implementation with PyCrypto interface |
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| 2 | |
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| 3 | def new(key): |
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| 4 | return Xor(key) |
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| 5 | |
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| 6 | class Xor: |
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| 7 | def __init__(self, key): |
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| 8 | self.__key = key |
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| 9 | |
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| 10 | def __xor(self, s): |
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| 11 | res = '' |
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| 12 | for i in range(len(s)): |
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| 13 | res += chr(ord(s[i]) ^ ord(self.__key[i])) |
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| 14 | return res |
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| 15 | |
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| 16 | |
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| 17 | def __normkey(self, s): |
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| 18 | self.__key = self.__key * (len(s) / len(self.__key)) |
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| 19 | |
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| 20 | def encrypt(self, s): |
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| 21 | self.__normkey(s) |
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| 22 | return self.__xor(s) |
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| 23 | |
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| 24 | decrypt = encrypt |
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