Questions tagged [spn]
A Substitution-Permutation-Network is a structure that has been used to create a number of different block ciphers (e.g., AES, Picollo, Present...)
7 questions with no upvoted or accepted answers
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Understanding Linear Cryptanalysis
I'm reading about the linear cryptanalysis of an SPN and I have some questions about the practicality of this. The example I'm looking at is from 3.3.3 of Stinson's Book and I believe the same example ...
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ε-close to t-wise inependence of SPN (AES)
According to theorem 3.13, the 6 rounds of AES is 0.472-close to pairwise independence. It is also mentioned t-wise independence used to analyze higher order derivates attacks. it is also mentioned 3-...
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Design of SIMD-implemented cipher
Design of efficient of block ciphers needs consideration of many factors such as register size. i found that some ciphers can be SIMD implemented such as TWINE , SM4 , chacha20 ,SPIX ,and others.
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Connecting, joining or merging Substitution Permutation layer
I am trying to identify how the SP Network is constructed. I am looking for plausible solutions that help to connect these layers together and what are the ways that exist in literature other than Kam ...
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Determining number of required plaintext pairs for differential cryptanalysis
When carrying differential analysis of a SPN network, how can one determine the number of required plaintext for the attack to be successful with high probability?
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Substitution-permutation network
Can anyone in 6th grade English explain the steps in the Substitution-permutation network algorithm or just point a link that does so? (which is included in many of the top modern algorithms)
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In SPN block cipher, is each bit of the ciphertext dependent on each bit of the S-boxes set?
In substitution–permutation network block ciphers like AES, when encrypting a plaintext into a ciphertext, will each bit of the ciphertext be associated to each bit of the S-boxes set in the cipher?
I ...
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