#/usr/bin/python # to attack hash collision in python # code by joeda@hi.baidu测试数据 2012-01-05 # to save as atk.py # python atk.py 40000 # . # 42.530313015 # * # 0.087562084198 import time, sys MAX = 100000 try: MAX = int( sys.argv[1] ) except: pass t0= time.time() k={} for i in range(MAX): k[ i*2*2**31-i ] = 0 print '.' print time.time() - t0 t0=time.time() kp={} for i in range( MAX ): i*2*2**31 k[i] = 0 print '*' print time.time() - t0
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