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2000 | OriginalPaper | Buchkapitel

The Sum of PRPs Is a Secure PRF

verfasst von : Stefan Lucks

Erschienen in: Advances in Cryptology — EUROCRYPT 2000

Verlag: Springer Berlin Heidelberg

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Given d independent pseudorandom permutations (PRPs) πi, ..., π d over 0, 1n, it appears natural to define a pseudorandom function (PRF) by adding (or XORing) the permutation results: sumd(x) = π1(x) ⊕ ··· ⊕ πd(x). This paper investigates the security of sumd and also considers a variant that only uses one single PRP over 0, 1n.

Metadaten
Titel
The Sum of PRPs Is a Secure PRF
verfasst von
Stefan Lucks
Copyright-Jahr
2000
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/3-540-45539-6_34

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