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The Cube Attack on Courtois Toy Cipher
Cube attack symmetric primitives Boolean polynomials CTC
2009/11/18
The cube attack has been introduced by Itai Dinur and Adi
Shamir [8] as a known plaintext attack on symmetric primitives. The
attack has been applied to reduced variants of the stream ciphers Triviu...
KeeLoq密码Courtois攻击方法的分析和修正
密码分析 KeeLoq密码 滑动-代数攻击
2009/5/13
KeeLoq密码是由Willem Smit设计的分组密码算法，广泛应用于汽车的无线门锁装置。Courtois等人在2007年提出了破译KeeLoq的4种滑动-代数攻击方法，其中第4种滑动-代数攻击方法的计算复杂性最小。本文证明了Courtois的第4种滑动-代数攻击方法的攻击原理是错误的，因而无法实现对KeeLoq的破译。此外，本文还对该方法进行了修正，提出了改进的攻击方法，利用232个已知明文能...
In the paper [1] published in "Asiacrypt 2000", L. Goubin and N.T. Courtois propose
an attack on the TTM cryptosystem. In paper [1], they mispresent TTM cryptosystem.
Then they jump an attack from a...