In security, as nearly every plaintext data block is encrypted with different keys, and as most attacking techniques have high demands of plaintext/ciphertext pairs, it is difficult for them to work in such a cipher scheme.
In security, as nearly every plaintext data block is encrypted with different keys, and as most attacking techniques have high demands of plaintext/ciphertext pairs, it is difficult for them to work in such a cipher scheme.
在安全方面，由于加密时所有明文组几乎都各自使用了不同的轮密钥，而绝大数攻击方法需要一定数量相同密钥加密的明密文对，从而使这些攻击方法不能奏效。