mage .sh set lib 忘記 __name__ 不同 weight ont

培根密碼，培根所用的密碼是一種本質上用二進制數設計的，沒有用通常的0和1來表示，而是采用a和b

一、培根密碼加密方式

    第一種方式：
    A aaaaa B aaaab C aaaba D aaabb E aabaa F aabab G aabba H aabbb I abaaa J abaab
    K ababa L ababb M abbaa N abbab O abbba P abbbb Q baaaa R baaab S baaba T baabb
    U babaa V babab W babba X babbb Y bbaaa Z bbaab

    第二種方式
    a AAAAA   g AABBA    n ABBAA   t BAABA
    b AAAAB   h AABBB    o ABBAB   u-v BAABB
    c AAABA   i-j ABAAA  p ABBBA   w BABAA
    d AAABB   k ABAAB    q ABBBB   x BABAB
    e AABAA   l ABABA    r BAAAA   y BABBA
    f AABAB   m ABABB    s BAAAB   z BABBB

二、舉例

例1、 baabaaabbbabaaabbaaaaaaaaabbabaaaabaaaaaabaaabaabaaaabaabbbaabbbaababb

baaba aabbb abaaa bbaaa aaaaa abbab aaaab aaaaa abaaa baaba aaaba abbba abbba ababb

s h i y a n b a i s c o o l

例2、明文是LOVE，用“隨意選取句子和文”加密，得到密文就是“SuLyi XuanQ uJuZi HEwEN”（這裏用大寫字母代表a,小寫字母代表b）

SuLyi XuanQ uJuZi HEwEN

ababbabbbabababaabaa

這裏，加密者使用兩種不同字體，準備好一篇包含相同ab字數的假信息後，即兩種字體分別代表a型和b型。然後假信息中的每個字母按字體來決定其代表“a”還是“b”。

例3、明文:now is a good t.........密碼術 密碼學 密碼論壇 密碼術論壇, `, Q" J/ K2 F9 S

n o w i s a g o o d t
abbaa abbab babaa abaaa baaab aaaaa aabba abbab abbab aaabb baaba
密文:BOWED ASTER PINED JOKED THEIR BLACK HASTE ARRAY INSET CHEST SLING

加密規則：（1）a-m -> a ，也就是說 a ——m 的所有字母都能替換成 a。

n-z -> b ，也就是說 n ——z 的所有字母都能替換成 b。

（2）a-m <- a ，也就是說 a 可以替換 a——m 中的任何一個字母。

n-z <- a ，也就是說 b 可以替換 n——z 中的任何一個字母。

Ps:密文中的單詞都是根據加密規則隨便拼湊出來的，為了使加密更隱蔽，一般拼湊出來的單詞可連成通順的一句話

三、附加解密Python腳本如下：

#!/usr/bin/python
# -*- coding: utf-8 -*-
import re

alphabet = [‘a‘,‘b‘,‘c‘,‘d‘,‘e‘,‘f‘,‘g‘,‘h‘,‘i‘,‘j‘,‘k‘,‘l‘,‘m‘,‘n‘,‘o‘,‘p‘,‘q‘,‘r‘,‘s‘,‘t‘,‘u‘,‘v‘,‘w‘,‘x‘,‘y‘,‘z‘]

first_cipher = ["aaaaa","aaaab","aaaba","aaabb","aabaa","aabab","aabba","aabbb","abaaa","abaab","ababa","ababb","abbaa","abbab","abbba","abbbb","baaaa","baaab","baaba","baabb","babaa","babab","babba","babbb","bbaaa","bbaab"]

second_cipher = ["aaaaa","aaaab","aaaba","aaabb","aabaa","aabab","aabba","aabbb","abaaa","abaaa","abaab","ababa","ababb","abbaa","abbab","abbba","abbbb","baaaa","baaab","baaba","baabb","baabb","babaa","babab","babba","babbb"]

def encode():
    string = raw_input("please input string to encode:\n")
    e_string1 = ""
    e_string2 = ""
    for index in string:
        for i in range(0,26):
            if index == alphabet[i]:
                e_string1 += first_cipher[i]
                e_string2 += second_cipher[i]
                break
    print "first encode method result is:\n"+e_string1
    print "second encode method result is:\n"+e_string2
    return


def decode():
    e_string = raw_input("please input string to decode:\n")
    e_array = re.findall(".{5}",e_string)
    d_string1 = ""
    d_string2 = ""
    for index in e_array:
        for i in range(0,26):
            if index == first_cipher[i]:
                d_string1 += alphabet[i]
            if index == second_cipher[i]:
                d_string2 += alphabet[i]
    print "first decode method result is:\n"+d_string1
    print "second decode method result is:\n"+d_string2
    return


if __name__ == ‘__main__‘:
    while True:
        print "\t*******Bacon Encode_Decode System*******"
        print "input should be lowercase,cipher just include a b"
        print "1.encode\n2.decode\n3.exit"
        s_number = raw_input("please input number to choose\n")
        if s_number == "1":
            encode()
            raw_input()
        elif s_number == "2":
            decode()
            raw_input()
        elif s_number == "3":
            break
        else:
            continue

註：本筆記參考文獻百度百科、xuqi7博客、 曜希JFSH

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ps:萌新一枚，本文純為學習筆記，以防某日犯傻忘記--。如有不妥處，望大佬們賜教~

培根密碼解密筆記