题目 Challenge 1 Set 1 - The Cryptopals Crypto Challenges 将十六进制转换为Base64 16 进制字符串: 49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d 要转换成为: SSdtIG...

题目 Vigenere-like cipher Write a program that allows you to “crack” ciphertexts generated using a Vigenere-like cipher, where byte-wise XOR is used instead of addition modulo 26. Specifically, the ...

题目 Many Time Pad Let us see what goes wrong when a stream cipher key is used more than once. Below are eleven hex-encoded ciphertexts that are the result of encrypting eleven plaintexts with a st...