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45 lines
1.0 KiB
Python
45 lines
1.0 KiB
Python
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#!/usr/bin/env python
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# (c) 2009 Richard Andrews <andrews@ntop.org>
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# Program to generate a n2n_edge key schedule file for twofish keys
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# Each key line consists of the following element
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# <from> <until> <txfrm> <opaque>
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#
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# where <from>, <until> are UNIX time_t values of key valid period
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# <txfrm> is the transform ID (=2 for twofish)
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# <opaque> is twofish-specific data as follows
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# <sec_id>_<hex_key>
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import os
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import sys
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import time
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import random
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NUM_KEYS=30
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KEY_LIFE=300
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KEY_LEN=16
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now=time.time()
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start_sa=random.randint( 0, 0xffffffff )
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random.seed(now) # note now is a floating point time value
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def rand_key():
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key=str()
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for i in range(0,KEY_LEN):
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key += "%02x"%( random.randint( 0, 255) )
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return key
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for i in range(0,NUM_KEYS):
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from_time = now + (KEY_LIFE * (i-1) )
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until_time = now + (KEY_LIFE * (i+1) )
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key = rand_key()
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sa_idx = start_sa + i
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transform_id = random.randint( 2, 3 )
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sys.stdout.write("%d %d %d %d_%s\n"%(from_time, until_time, transform_id,sa_idx, key) )
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