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✏️ md5driver.py
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import string import md5 from sys import argv def MDPrint(str): outstr = '' for i in str: o = ord(i) outstr = (outstr + string.hexdigits[(o >> 4) & 0xF] + string.hexdigits[o & 0xF]) print outstr, 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.new() 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.new(str).digest()) print '"' + str + '"' def MDFile(filename): f = open(filename, 'rb') mdContext = md5.new() while 1: data = f.read(1024) if not data: break mdContext.update(data) MDPrint(mdContext.digest()) print filename import sys def MDFilter(): mdContext = md5.new() while 1: data = sys.stdin.read(16) 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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