简直是人!将楼主的题目复制到文本里，只处理前1200个字符字符统频|标准| > 4.000000频次表
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
00
0000000000 1700 170001
00000000000000000234800000000000 1706003
000000000001000004
0 18 48 5835 11 30 16 12 761 12 68 36205 677 521 75 13 40 23 93 1900000006
000000000000000007
000000000000000008
000000000000000009
00000000000000000a
04000000000000040b
00000000000000000c
00000000000000000d
00000000000000000e
00000000000000000f
0000000000000000T值表
00
01
02
03
04
05
06
07
08
09
0a
0b
0c
0d
0e
0f
00 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.175.70 -2.17 -2.175.70 -2.17 -2.17 01 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 02158.88 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.175.70 -2.170.61 -2.17 03 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -1.71 -2.17 -2.17 -2.17 -2.17 04 -2.176.16 20.04 24.67 -0.780.142.92 11.715.243.38 33.00 -1.713.38 29.30 14.49 -1.24 05 28.841.07 21.90 -1.71 32.543.85 16.348.47 40.876.62 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 06 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 07 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 08 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 09 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 0a -2.17 -0.32 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -0.32 0b -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 0c -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 0d -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 0e -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 0f -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 -2.17 下面是敏感信息0a
17
5.6980(回车换行)0d
17
5.698020
348
158.87992c,
17
5.698041A
18
6.160842B
48
20.044443C
58
24.672247G
30
11.714248H
16
5.23534aJ
76
33.00244dM
68
29.30014eN
36
14.491050P
67
28.837352R
52
21.895554T
75
32.539656V
40
16.342157W
23
8.474758X
93
40.869759Y
19
6.6236计算相应频次,发现和英文字母出现的频次相近,由T值分析不是耦合现象,这是典型的代替作业模式;英文字母使用频率表:(%)A 8.19 B 1.47C 3.83 D 3.91 E 12.25 F 2.26 G 1.71H 4.57 I 7.10J 0.14 K 0.41 L 3.77M 3.34 N 7.06O 7.26 P 2.89Q 0.09 R 6.85 S 6.36T 9.41U 2.58 V 1.09W 1.59 X 0.21 Y 1.58Z 0.08高频字母设字: eg(X = E)利用词的频率特性,除了汉字的构词特性外,英文单词也存在明显的构词和字母跟随关系,比如在10000个英文单词中(包含功能词汇),and出现142次,the出现420次等等,同时也根据英文语法关系可是设字破译,比如文中出现的'后面的字符一般是s或者m,随意可以假定(R=S)具体设字破译阶段bcgzcr已经分析的很透彻了,我在这里只是给出了一般意义上的此类密码的破译思路.
在设立字符替代的基础上,反复带入进行验证,知道带入字符不出现矛盾的情况下,由英文单词的特性来推全所有的密钥即可.本文密钥:
明文:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
密钥:
CIOVYBLKFTQMADZHPSJNURGEWX
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