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from hashlib import md5
import string
from sys import argv
def MDPrint(str):
outstr = ''
for o in str:
outstr = (outstr
+ string.hexdigits[(o >> 4) & 0xF]
+ string.hexdigits[o & 0xF])
print(outstr, end=' ')
from time import time
def makestr(start, end):
result = ''
for i in range(start, end + 1):
result = result + chr(i)
return result
def MDTimeTrial():
TEST_BLOCK_SIZE = 1000
TEST_BLOCKS = 10000
TEST_BYTES = TEST_BLOCK_SIZE * TEST_BLOCKS
# initialize test data, need temporary string filler
filsiz = 1 << 8
filler = makestr(0, filsiz-1)
data = filler * (TEST_BLOCK_SIZE // filsiz)
data = data + filler[:(TEST_BLOCK_SIZE % filsiz)]
del filsiz, filler
# start timer
print('MD5 time trial. Processing', TEST_BYTES, 'characters...')
t1 = time()
mdContext = md5()
for i in range(TEST_BLOCKS):
mdContext.update(data)
str = mdContext.digest()
t2 = time()
MDPrint(str)
print('is digest of test input.')
print('Seconds to process test input:', t2 - t1)
print('Characters processed per second:', TEST_BYTES / (t2 - t1))
def MDString(str):
MDPrint(md5(str.encode("utf-8")).digest())
print('"' + str + '"')
def MDFile(filename):
f = open(filename, 'rb')
mdContext = md5()
while 1:
data = f.read(1024)
if not data:
break
mdContext.update(data)
MDPrint(mdContext.digest())
print(filename)
import sys
def MDFilter():
mdContext = md5()
while 1:
data = sys.stdin.read(16).encode()
if not data:
break
mdContext.update(data)
MDPrint(mdContext.digest())
print()
def MDTestSuite():
print('MD5 test suite results:')
MDString('')
MDString('a')
MDString('abc')
MDString('message digest')
MDString(makestr(ord('a'), ord('z')))
MDString(makestr(ord('A'), ord('Z'))
+ makestr(ord('a'), ord('z'))
+ makestr(ord('0'), ord('9')))
MDString((makestr(ord('1'), ord('9')) + '0') * 8)
# Contents of file foo are "abc"
MDFile('foo')
# I don't wanna use getopt(), since I want to use the same i/f...
def main():
if len(argv) == 1:
MDFilter()
for arg in argv[1:]:
if arg[:2] == '-s':
MDString(arg[2:])
elif arg == '-t':
MDTimeTrial()
elif arg == '-x':
MDTestSuite()
else:
MDFile(arg)
main()
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