PICARO - A Block Cipher Allowing Efficient Higher-Order Side-Channel Resistance
PICARO - A Block Cipher Allowing Efficient Higher-Order Side-Channel Resistance
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DOI：
10.1007/978-3-642-31284-7_19
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发表时间：
2012-06
期刊：
影响因子：
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通讯作者：
G. Piret;Thomas Roche;C. Carlet
中科院分区：
文献类型：
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作者：
G. Piret;Thomas Roche;C. Carlet
许多文献都在研究如何为现有的分组密码构造一个有效的掩码方案。我们采取相反的方法：也就是说，给定一个已证明的掩码方案（Rivain和Prouff，CHES 2010），我们设计了一个很好地符合掩码约束的分组密码。实现分组密码有效掩蔽的困难主要来自于S盒。因此，选择合适的S盒是我们工作的第一步，也是最关键的一步。我们选择的S盒是非双射的，我们讨论由此产生的设计和安全问题。文中给出了该密码的完整设计方案和部分实现结果。
Many papers deal with the problem of constructing an efficient masking scheme for existing block ciphers. We take the reverse approach: that is, given a proven masking scheme (Rivain and Prouff, CHES 2010) we design a block cipher that fits well the masking constraints. The difficulty of implementing efficient masking for a block cipher comes mainly from the S-boxes. Therefore the choice of an adequate S-box is the first and most critical step of our work. The S-box we selected is non-bijective; we discuss the resulting design and security problems. A complete design of the cipher is given, as well as some implementation results.