培根密码（Bacon）——python解密

迷南。 2021-11-17 00:01 2542阅读 0赞

## 简介 ##

培根密码，又名倍康尼密码（英语：Bacon’s cipher）是由法兰西斯·培根发明的一种隐写术。

**特点**：  
**培根密码本质上是将二进制信息通过样式的区别**，加在了正常书写之上。培根密码所包含的信息可以和用于承载其的文章完全无关。**培根密码实际上就是一种替换密码**，根据所给表一一对应转换即可加密解密 。它的特殊之处在于：可以通过不明显的特征来隐藏密码信息，比如大小写、正斜体等，只要两个不同的属性，密码即可隐藏。

## 实现 ##

培根密码实际上就是一种替换密码，一般有两种加密方式，所以相互对应就可以了。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjEwOTAxMg_size_16_color_FFFFFF_t_70]

## 代码 ##

函数

letters1 = [
        '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',
    ]
    letters2 = [
        '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',
    ]
    cipher1 = [
        "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",
    ]
    cipher2 = [
        "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 bacon1(string):
        lists = []
        # 分割，五个一组
        for i in range(0, len(string), 5):
            lists.append(string[i:i+5])
        # print(lists)
        # 循环匹配，得到下标，对应下标即可
        for i in range(0, len(lists)):
            for j in range(0, 26):
                if lists[i] == cipher1[j]:
                    # print(j)
                    print(letters1[j], end="")
        print("")
    
    
    def bacon2(string):
        lists = []
        # 分割，五个一组
        for i in range(0, len(string), 5):
            lists.append(string[i:i+5])
        # print(lists)
        # 循环匹配，得到下标，对应下标即可
        for i in range(0, len(lists)):
            for j in range(0, 26):
                if lists[i] == cipher2[j]:
                    # print(j)
                    print(letters2[j], end="")
        print("")

主函数

import Bacon
    
    if __name__ == "__main__":
        Bacon.bacon1("aababababbaaaaaaabba")
        Bacon.bacon2("AABABABABAAAAAAAABBA")

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjEwOTAxMg_size_16_color_FFFFFF_t_70 1]

## 总结 ##

这个我很少遇到，不太常见。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjEwOTAxMg_size_16_color_FFFFFF_t_70]: /images/20211116/abc5dcd2f1244d2289ec455ff75f6f78.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjEwOTAxMg_size_16_color_FFFFFF_t_70 1]: /images/20211116/cc38396ef2484bd6baeb60545704f79f.png