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1 # It's intended that this script be run by hand.  It runs speed tests on
2 # hashlib functions; it does not test for correctness.
3 
4 import sys
5 import time
6 import hashlib
7 
8 
9 def creatorFunc():
10     raise RuntimeError("eek, creatorFunc not overridden")
11 
12 def test_scaled_msg(scale, name):
13     iterations = 106201//scale * 20
14     longStr = b'Z'*scale
15 
16     localCF = creatorFunc
17     start = time.perf_counter()
18     for f in range(iterations):
19         x = localCF(longStr).digest()
20     end = time.perf_counter()
21 
22     print(('%2.2f' % (end-start)), "seconds", iterations, "x", len(longStr), "bytes", name)
23 
24 def test_create():
25     start = time.perf_counter()
26     for f in range(20000):
27         d = creatorFunc()
28     end = time.perf_counter()
29 
30     print(('%2.2f' % (end-start)), "seconds", '[20000 creations]')
31 
32 def test_zero():
33     start = time.perf_counter()
34     for f in range(20000):
35         x = creatorFunc().digest()
36     end = time.perf_counter()
37 
38     print(('%2.2f' % (end-start)), "seconds", '[20000 "" digests]')
39 
40 
41 
42 hName = sys.argv[1]
43 
44 #
45 # setup our creatorFunc to test the requested hash
46 #
47 if hName in ('_md5', '_sha'):
48     exec('import '+hName)
49     exec('creatorFunc = '+hName+'.new')
50     print("testing speed of old", hName, "legacy interface")
51 elif hName == '_hashlib' and len(sys.argv) > 3:
52     import _hashlib
53     exec('creatorFunc = _hashlib.%s' % sys.argv[2])
54     print("testing speed of _hashlib.%s" % sys.argv[2], getattr(_hashlib, sys.argv[2]))
55 elif hName == '_hashlib' and len(sys.argv) == 3:
56     import _hashlib
57     exec('creatorFunc = lambda x=_hashlib.new : x(%r)' % sys.argv[2])
58     print("testing speed of _hashlib.new(%r)" % sys.argv[2])
59 elif hasattr(hashlib, hName) and hasattr(getattr(hashlib, hName), '__call__'):
60     creatorFunc = getattr(hashlib, hName)
61     print("testing speed of hashlib."+hName, getattr(hashlib, hName))
62 else:
63     exec("creatorFunc = lambda x=hashlib.new : x(%r)" % hName)
64     print("testing speed of hashlib.new(%r)" % hName)
65 
66 try:
67     test_create()
68 except ValueError:
69     print()
70     print("pass argument(s) naming the hash to run a speed test on:")
71     print(" '_md5' and '_sha' test the legacy builtin md5 and sha")
72     print(" '_hashlib' 'openssl_hName' 'fast' tests the builtin _hashlib")
73     print(" '_hashlib' 'hName' tests builtin _hashlib.new(shaFOO)")
74     print(" 'hName' tests the hashlib.hName() implementation if it exists")
75     print("         otherwise it uses hashlib.new(hName).")
76     print()
77     raise
78 
79 test_zero()
80 test_scaled_msg(scale=106201, name='[huge data]')
81 test_scaled_msg(scale=10620, name='[large data]')
82 test_scaled_msg(scale=1062, name='[medium data]')
83 test_scaled_msg(scale=424, name='[4*small data]')
84 test_scaled_msg(scale=336, name='[3*small data]')
85 test_scaled_msg(scale=212, name='[2*small data]')
86 test_scaled_msg(scale=106, name='[small data]')
87 test_scaled_msg(scale=creatorFunc().digest_size, name='[digest_size data]')
88 test_scaled_msg(scale=10, name='[tiny data]')
89