已知一个加法密码的密文如下:BEEAKFYDJXUQYHYJIQRYUTYJIQFBQDUYJIIKFUHCQD,用穷举法求出明文密码学引论的第二章
网友回答
【答案】 BEEAKFYDJXUQYHYJIQRYUTYJIQFBQDUYJIIKFUHCQD
CFFB
DGGC
EHHD
FIIE
GJJF
HKKG
ILLH
JMMI
KNNJ
LOOK
穷举到L发现拼出了LOOK,于是每个字母都加十就是明文
LOOKUPINTHEAIRITSABIEDITSAPLANEITSSUPERMAN
LOOK UP IN THE AIR ITS A BIED ITS A PLANE ITS SUPERMAN
Look up in the air.It's a bird.It's a plane.It's superman.
(题目误把bird拼成了bied,故原题第21个字母应为H而不是U)