We found that this scheme cannot resist chosen plaintext attack, cho-sen ciphertext attack and known plaintext attack. 实现了对该方案的选择明文攻击(CPA)、选择密文攻击和已知明文攻击。
The improved encryption mode has a good diffusion and it can resist Chosen Plaintext Attack(CPA) and Known Plaintext Attack. 这种结合了自适应算法的加密模式,使算法的扩散性能增强,能很好的抵抗选择明文攻击(CPA)和已知明文攻击。
A symmetric cryptosystem is analyzed and found its loopholes. Then chosen plaintext attack is carried out successfully. 对一种混沌密码系统进行分析,发现该密码系统存在的漏洞,并且证明此密码系统并不能抵抗选择明文攻击(CPA)。
In addition, the plaintext determined block length can effectively resist chosen plaintext attack and chosen ciphertext attack. 此外,明文相关的分组长度可以有效的抵御选择明文或选择密文攻击。
And in this foundation we present some improvements. Firstly, this paper makes an in-depth cryptanalysis on an ergodic chaotic encryption algorithm and then cracks the original algorithm by chosen plaintext attack with a specific example. 本文首先针对一种混沌遍历性加密算法进行密码分析,用选择明文攻击(CPA)法对原算法进行了破解,并且给出了具体的破解实例。