搜索结果: 1-9 共查到“知识库 LBlock”相关记录9条 . 查询时间(0.046 秒)
Automatic Search for Key-Bridging Technique: Applications to LBlock and TWINE (Full Version)
Block Ciphers Key-Bridging Technique Automatic Search
2016/5/3
Key schedules in block ciphers are often highly simplified, which causes weakness that can be exploited in many attacks. At ASIACRYPT 2011, Dunkelman et al. proposed a technique using the weakness in ...
针对轻量级密码LBlock算法的Cache计时研究，着重分析密码算法中S盒的非线性结构特征。基于其结构特征推导出S盒的真值表，求解得出S盒输入输出关系的代数表达式；再结合LBlock算法的加密过程和轮函数F的结构，推导出每个轮运算的表达式以及S盒查找索引的代数表达式；结合踪迹驱动Cache计时攻击的攻击原理与模型，总结得出针对LBlock算法Cache攻击中密钥分析的核心表达式，结果表明LBloc...
Impossible differential cryptanalysis of LBlock with concrete investigation of key scheduling algorithm
Impossible differential cryptanalysis key recovery attack
2016/1/23
Impossible differential cryptanalysis has been proved to be one of the most powerful techniques to attack block ciphers. Based on the impossible differential paths, we can usually add several rounds...
Improved Impossible Differential Attacks against Round-Reduced LBlock
block ciphers impossible differential attacks LBlock
2016/1/23
Impossible differential attacks are among the most powerful forms of cryptanalysis against block ciphers. We present in this paper an in-depth complexity analysis of these attacks. We show an unifie...
Scrutinizing and Improving Impossible Differential Attacks: Applications to CLEFIA, Camellia, LBlock and Simon (Full Version)
block ciphers impossible differential attacks CLEFIA
2016/1/7
Impossible differential cryptanalysis has shown to be a very powerful form of cryptanalysis against
block ciphers. These attacks, even if extensively used, remain not fully understood because of thei...
LBlock算法的相关密钥-不可能差分攻击
分组密码 密码分析 LBlock算法 相关密钥-不可能差分攻击
2017/1/4
该文研究了LBlock分组密码算法在相关密钥-不可能差分条件下的安全性.利用子密钥生成算法的差分信息泄漏规律,构造了多条低重量子密钥差分链,给出了15轮相关密钥-不可能差分区分器.通过扩展区分器,给出了23轮和24轮LBlock算法的相关密钥-不可能差分攻击方法.攻击所需的数据复杂度分别为265.2和265.6个选择明文,计算复杂度分别为266.2次23轮LBlock算法加密和266.6次24轮L...
Automatic Security Evaluation for Bit-oriented Block Ciphers in Related-key Model: Application to PRESENT-80, LBlock and Others
Mixed-integer Linear Programming Logical condition modelling
2014/3/6
Since AES and PRESENT are two international standard block ciphers representing the most elegant design strategies for byte-oriented and bit-oriented designs respectively, we regard AES and PRES\-ENT ...
In this paper, we propose a new lightweight block cipher called LBlock. Similar to many other lightweight block ciphers, the block size of LBlock is 64-bit and the key size is 80-bit.
In this paper, we propose a new lightweight block cipher called LBlock. Similar to many other lightweight block ciphers, the block size of LBlock is 64-bit and the key size is 80-bit. Our security eva...