Linear Structures in Blockciphers
Linear Structures in Blockciphers
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DOI：
10.1007/3-540-39118-5_23
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发表时间：
1987-04
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影响因子：
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通讯作者：
J. Evertse
中科院分区：
文献类型：
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作者：
J. Evertse
分组密码将每对明文和密钥映射到密文上，使得对于每个固定密钥，明文和密文之间的关系是一对一的。假设明文和密文属于由给定长度的所有位串（0和1的序列）组成的消息空间；密钥取自由所有可能给定长度的位串组成的密钥空间。一个著名的分组密码是 NBS 数据加密标准（DES）[6]，它是十六个基本相等的“轮”的迭代。
A blockcipher maps each pair of plaintext and key onto a ciphertext in such a way that for every fixed key, the relationship between plaintexts and ciphertexts is one-to-one. It is assumed that plaintexts and ciphertexts belong to a message space comprising all bit-strings (sequences of zeros and ones) of a given length; keys are taken from a key space made up of aU bitstrings of a possibly Merent given length. A well-known blockcipher is the NBS Data Encryption Standard (DES) [6], whch is the iteration of sixteen essentially equal “rounds”.