New (Two-Track-)MAC Based on the Two Trails of RIPEMD

Authors:
Bert den Boer;Bart Van Rompay;Bart Preneel;Joos Vandewalle
Affiliations:
-;-;-;-
Venue:
SAC '01 Revised Papers from the 8th Annual International Workshop on Selected Areas in Cryptography
Year:
2001

Citing 4
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Abstract

We present a new message authentication code. It is based on a two trail construction, which underlies the unkeyed hash function RIPEMD-160. It is in comparison with the MDx-MAC based on RIPEMD-160, much more efficient on short messages (that is on messages of 512 or 1024 bits) and percentage-wise a little bit more efficient on long messages. Moreover, it handles key-changes very efficiently. This positive fact remains if we compare our Two-Track-MAC with HMAC based on RIPEMD-160.