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On the Security of the COPA and Marble Authenticated Encryption Algorithms against (Almost) Universal Forgery Attack
Authenticated encryption algorithm COPA Marble
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2016/1/4
COPA is a block-cipher-based authenticated encryption mode
with a provable birthday-bound security under the assumption that the
underlying block cipher is a strong pseudorandom permutation, and its...
Collision Attacks against CAESAR Candidates -- Forgery and Key-Recovery against AEZ and Marble
Thomas Fuhr Valentin Suder
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2015/12/18
In this paper we study authenticated encryption algorithms
inspired by the OCB mode (Offset Codebook). These algorithms use
secret offsets (masks derived from a whitening key) to turn a block cipher...