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twisted/conch/openssh_compat/primes.py

 

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# Copyright (c) 2001-2004 Twisted Matrix Laboratories.

 

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# See LICENSE for details.

 

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# 

 

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"""Parsing for the moduli file, which contains Diffie-Hellman prime groups.

 

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This module is unstable.

 

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Maintainer: U{Paul Swartz<mailto:z3p@twistedmatrix.com>}

 

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"""

 

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def parseModuliFile(filename):

 

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    lines = open(filename).readlines()

 

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    primes = {}

 

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    for l in lines:

 

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        l = l.strip()

 

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        if  not l or l[0]=='#':

 

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            continue

 

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        tim, typ, tst, tri, size, gen, mod = l.split()

 

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        size = int(size) + 1

 

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        gen = long(gen)

 

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        mod = long(mod, 16)

 

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        if not primes.has_key(size):

 

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            primes[size] = []

 

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        primes[size].append((gen, mod))

 

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    return primes

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