Hash-function based PRFs: AMAC and its multi-user security
AMAC AMAC is a simple and fast candidate construction of a PRF from an MD-style hash
function which applies the keyed hash function and then a cheap, un-keyed output transform
such as truncation. Spurred by its use in the widely-deployed Ed25519 signature scheme,
this paper investigates the provable PRF security of AMAC AMAC to deliver the following
three-fold message:(1) First, we prove PRF security of AMAC AMAC.(2) Second, we show
that AMAC AMAC has a quite unique and attractive feature, namely that its multi-user …
function which applies the keyed hash function and then a cheap, un-keyed output transform
such as truncation. Spurred by its use in the widely-deployed Ed25519 signature scheme,
this paper investigates the provable PRF security of AMAC AMAC to deliver the following
three-fold message:(1) First, we prove PRF security of AMAC AMAC.(2) Second, we show
that AMAC AMAC has a quite unique and attractive feature, namely that its multi-user …
[CITATION][C] Hash-function based PRFs: AMAC and its multi-user security. LNCS
M Bellare, DJ Bernstein, S Tessaro - 2016 - Springer, Heidelberg
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