CTF-Crypto 密码解密python脚本（一）

凯撒密码

# 模块安装
pip install pycipher

from pycipher import Caesar

plaintext = Caesar(3).decipher(ciphertext)
ciphertext = Caesar(3).encipher(plaintext)

摩斯密码

# 模块安装
pip install morse-talk

import morse_talk as mtalk
 
# Encoding in morse
>>> mtalk.encode('Alpha Ranger 45 departed')
'.-   .-..   .--.   ....   .-       .-.   .-   -.   --.   .   .-.       ....-   .....       -..   .   .--.   .-   .-.   -   .   -..'
 
# Encoding using binary pattern
>>> mtalk.encode('Alpha Ranger 45 knocked down', encoding_type='binary')
'101110001011101010001011101110100010101010001011100000001011101000101110001110100011101110100010001011101000000010101010111000101010101000000011101011100011101000111011101110001110101110100011101011100010001110101000000011101010001110111011100010111011100011101'
 
# Decoding a code encoded in morse
>>> code = '-...   ---   --   -...       -..-       .--.   --'
>>> mtalk.decode(code)
'BOMB X PM'
 
# Decoding a binary pattern
>>> s_bin = mtalk.encode('Alpha Ranger 45 knocked down', encoding_type='binary')
>>> mtalk.decode(s_bin, encoding_type='binary')
'ALPHA RANGER 45 KNOCKED DOWN'

栅栏密码

from pycipher import Railfence
 
print Railfence(4