The security analysis shows it can prevent plaintext attack, conspiracy attack and forging attack.
安全性分析表明该方案能够防止明文攻击、合谋攻击和伪造攻击。
But it still has some security hidden troubles, for instance: replay attack, password guessing, inter-session chosen plaintext attacks.
但仍存在一些隐患，例如：重放攻击、密码猜测、会话中选择明文攻击等等。
The analysis indicates that the encryption algorithm not only can effectively resist cipher-text-only attack but also chosen-plaintext attack.
分析表明，该文所设计的加密算法不但能抵抗唯密文攻击，而且能有效地抵抗选择明文攻击。
A improved algorithm that builds security channel is provided, the new algorithm not only against known-plaintext attack, but also enhance efficiency of operation for encryption and decryption.
提出了一种改进的安全信道建立算法，新的算法能够承受已知明文攻击，同时还提高了加、解密运算的效率。
Homeostasis attack of this kind of scheme is also proposed with known plaintext, all of these could make up the shortcoming of theory analysis.
最后给出了对该类方案的已知明文的同态攻击方法，弥补了该类方案理论分析上的不足。
Homeostasis attack of this kind of scheme is also proposed with known plaintext, all of these could make up the shortcoming of theory analysis.
最后给出了对该类方案的已知明文的同态攻击方法，弥补了该类方案理论分析上的不足。
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