Abstract
As old as TANDEM-DM, the compression function ABREAST-DM is one of the most well-known constructions for double block length compression functions. In this paper, we give a security proof for ABREAST-DM in terms of collision resistance and preimage resistance. The bounds on the number of queries for collision resistance and preimage resistance are given by Ω(2 n ). Based on a novel technique using query-response cycles, our security proof is simpler than those for MDC-2 and TANDEM-DM. We also present a wide class of ABREAST-DM variants that enjoy a birthday-type security guarantee with a simple proof * .
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