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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...
Revisiting Security Claims of XLS and COPA
XLS COPA Pseudorandom function
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2015/12/30
Ristenpart and Rogaway proposed XLS in 2007 which is a generic method to encrypt messages with incomplete last blocks. Later Andreeva et al., in 2013 proposed an authenticated encryption COPA which us...