xtime算法理论基础:
C(x)=A(x)B(x) mod P(x)二进制数转换为多项式:A(a7,a6,a5,a4,a3,a2,a1,a0)==>A(X)=a7x7+a6x6+a5x5+a4x4+a3x3+a2x2+a1x+a0,GF(28)内的最大值为(11111111)2==> x7+x6+x5+x4+x3+x2...
原题:
It is said that Vigenere cipher does not achieve the perfect secrecy actually :-)Tips:1.The encode pragram is given;2.Do u no index of coincidence ?3.The key is last 6 words of the plain text(...
记录遇到的一些奇奇怪怪的密码###变异凯撒
第一位 偏移5,第二位偏移6 , 第三位偏移7 ,第四位偏移8……以此类推
12345k = 5 str = 'afZ_r9VYfScOeO_UL^RWUc' for i in str: print(chr(ord(i)+k),end="") k +=1
###quo...