Python hex_to_str示例

示例#1

文件： chal1.py 项目： Grazfather/cryptopals

import base64

import crypto

input = "49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d"

print "Hex input:"
print input
print "Plaintext:"
print crypto.hex_to_str(input)
print "Encoded"
print crypto.hex_to_base64(input)

示例#2

文件： chal3.py 项目： Grazfather/cryptopals

import crypto

input = crypto.hex_to_str("1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736")


key, score, string = crypto.break_byte_key_english(input)

print "Key: '{}' ({}): {}".format(chr(key), score, string)

示例#3

文件： chal4.py 项目： Grazfather/cryptopals

import crypto

best = ""
bestkey = ""
bestscore = 0.0
with open('data/4.txt', 'r') as f:
    for line in f:
        ct = crypto.hex_to_str(line.rstrip())
        for k in range(256):
            s = crypto.xorstring_key(ct, chr(k))
            score = crypto.score_english(s)
            if score > bestscore:
                best = s
                bestkey = k
                bestscore = score

print "Key: '{}' ({}): {}".format(chr(bestkey), bestscore, best)