跨字节边界应用的分割块和乘积密码

Proceedings of the 6th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems Pub Date : 2011-11-10 DOI:10.1109/IDAACS.2011.6072867

Albert H Carlson, R. Hiromoto, R. Wells

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引用次数: 2

摘要

采用集合理论估计(STE)方法对块密码和乘积密码的安全性进行了研究。利用置换(P)和替换(S)密钥研究了已知密文攻击。这些块由三(3)个字母字符(元字符)组成，其中P和S在三个字符的ASCII字节表示上的应用允许跨越字节边界。STE的应用放弃了使用选择明文或已知明文攻击的需要。

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Breaking block and product ciphers applied across byte boundaries

The security of block and product ciphers is considered using a set theoretic estimation (STE) approach to decryption. Known-ciphertext attacks are studied using permutation (P) and substitution (S) keys. The blocks are formed form three (3) alphabetic characters (metacharacters) where the applications of P and S upon the ASCII byte representation of each of the three characters are allowed to cross byte boundaries. The application of STE forgoes the need to employ chosen-plaintext or known-plaintext attacks.

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Proceedings of the 6th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems

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