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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
4import sys
5import time
6import hashlib
7
8
9def creatorFunc():
10    raise RuntimeError("eek, creatorFunc not overridden")
11
12def 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
24def 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
32def 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
42hName = sys.argv[1]
43
44#
45# setup our creatorFunc to test the requested hash
46#
47if hName in ('_md5', '_sha'):
48    exec('import '+hName)
49    exec('creatorFunc = '+hName+'.new')
50    print("testing speed of old", hName, "legacy interface")
51elif 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]))
55elif 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])
59elif hasattr(hashlib, hName) and hasattr(getattr(hashlib, hName), '__call__'):
60    creatorFunc = getattr(hashlib, hName)
61    print("testing speed of hashlib."+hName, getattr(hashlib, hName))
62else:
63    exec("creatorFunc = lambda x=hashlib.new : x(%r)" % hName)
64    print("testing speed of hashlib.new(%r)" % hName)
65
66try:
67    test_create()
68except 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
79test_zero()
80test_scaled_msg(scale=106201, name='[huge data]')
81test_scaled_msg(scale=10620, name='[large data]')
82test_scaled_msg(scale=1062, name='[medium data]')
83test_scaled_msg(scale=424, name='[4*small data]')
84test_scaled_msg(scale=336, name='[3*small data]')
85test_scaled_msg(scale=212, name='[2*small data]')
86test_scaled_msg(scale=106, name='[small data]')
87test_scaled_msg(scale=creatorFunc().digest_size, name='[digest_size data]')
88test_scaled_msg(scale=10, name='[tiny data]')
89