简单替代密码解密
简单替代密码的解密详细操作教程
在本章中，您将学习有关替换密码的简单实现，该密码按照简单替换密码技术中使用的逻辑显示加密和解密的消息。这可以被视为另一种编码方法。
代码
您可以使用以下代码使用简单的替换密码进行解密-
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-28
import random
chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + \
'abcdefghijklmnopqrstuvwxyz' + \
'0123456789' + \
':.;,?!@#$%&()+=-*/_<> []{}`~^"\'\\'
def generate_key():
"""Generate an key for our cipher"""
shuffled = sorted(chars, key=lambda k: random.random())
return dict(zip(chars, shuffled))
def encrypt(key, plaintext):
"""Encrypt the string and return the ciphertext"""
return ''.join(key[l] for l in plaintext)
def decrypt(key, ciphertext):
"""Decrypt the string and return the plaintext"""
flipped = {v: k for k, v in key.items()}
return ''.join(flipped[l] for l in ciphertext)
def show_result(plaintext):
"""Generate a resulting cipher with elements shown"""
key = generate_key()
encrypted = encrypt(key, plaintext)
decrypted = decrypt(key, encrypted)
print 'Key: %s' % key
print 'Plaintext: %s' % plaintext
print 'Encrypted: %s' % encrypted
print 'Decrypted: %s' % decrypted
show_result('Hello World. This is demo of substitution cipher')
输出
上面的代码为您提供输出，如下所示-
