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# It's intended that this script be run by hand. It runs speed tests on # hashlib functions; it does not test for correctness. import sys import time import hashlib def creatorFunc(): raise RuntimeError("eek, creatorFunc not overridden") def test_scaled_msg(scale, name): iterations = 106201//scale * 20 longStr = b'Z'*scale localCF = creatorFunc start = time.time() for f in range(iterations): x = localCF(longStr).digest() end = time.time() print(('%2.2f' % (end-start)), "seconds", iterations, "x", len(longStr), "bytes", name) def test_create(): start = time.time() for f in range(20000): d = creatorFunc() end = time.time() print(('%2.2f' % (end-start)), "seconds", '[20000 creations]') def test_zero(): start = time.time() for f in range(20000): x = creatorFunc().digest() end = time.time() print(('%2.2f' % (end-start)), "seconds", '[20000 "" digests]') hName = sys.argv[1] # # setup our creatorFunc to test the requested hash # if hName in ('_md5', '_sha'): exec('import '+hName) exec('creatorFunc = '+hName+'.new') print("testing speed of old", hName, "legacy interface") elif hName == '_hashlib' and len(sys.argv) > 3: import _hashlib exec('creatorFunc = _hashlib.%s' % sys.argv[2]) print("testing speed of _hashlib.%s" % sys.argv[2], getattr(_hashlib, sys.argv[2])) elif hName == '_hashlib' and len(sys.argv) == 3: import _hashlib exec('creatorFunc = lambda x=_hashlib.new : x(%r)' % sys.argv[2]) print("testing speed of _hashlib.new(%r)" % sys.argv[2]) elif hasattr(hashlib, hName) and hasattr(getattr(hashlib, hName), '__call__'): creatorFunc = getattr(hashlib, hName) print("testing speed of hashlib."+hName, getattr(hashlib, hName)) else: exec("creatorFunc = lambda x=hashlib.new : x(%r)" % hName) print("testing speed of hashlib.new(%r)" % hName) try: test_create() except ValueError: print() print("pass argument(s) naming the hash to run a speed test on:") print(" '_md5' and '_sha' test the legacy builtin md5 and sha") print(" '_hashlib' 'openssl_hName' 'fast' tests the builtin _hashlib") print(" '_hashlib' 'hName' tests builtin _hashlib.new(shaFOO)") print(" 'hName' tests the hashlib.hName() implementation if it exists") print(" otherwise it uses hashlib.new(hName).") print() raise test_zero() test_scaled_msg(scale=106201, name='[huge data]') test_scaled_msg(scale=10620, name='[large data]') test_scaled_msg(scale=1062, name='[medium data]') test_scaled_msg(scale=424, name='[4*small data]') test_scaled_msg(scale=336, name='[3*small data]') test_scaled_msg(scale=212, name='[2*small data]') test_scaled_msg(scale=106, name='[small data]') test_scaled_msg(scale=creatorFunc().digest_size, name='[digest_size data]') test_scaled_msg(scale=10, name='[tiny data]')