Result shows that this method can obtain the sub-keys and the corresponding plaintexts when the computing complexity of the improving attack is about 241.
结果表明，该方法在穷举量约为241时，能恢复出输入输出变换的子密钥信息以及密文对应的明文信息。
2
A cryptosystem is called semantically secure if an attacker cannot distinguish two encryptions from each other even if the attacker knows (or has chosen) the corresponding plaintexts.
如果攻击者不能彼此区分两个加密，即使攻击者知道(或已经选择)相应的明文，则密码系统被称为语义安全。
3
Three are ciphers that can take input plaintexts of large and varying lengths and will output the ith block of the ciphertext after having processed only the first i blocks of the plaintext.