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NTRU-LPR IND-CPA: A New Ideal Lattices-based Scheme
Lattices-based Post-quantum Cryptography NTRUEncrypt NTRU-Prime
2018/1/31
In this paper, we propose NTRU-LPR IND-CPA, a new secure scheme based on the decisional variant of Bounded Distance Decoding problem over rings (DR-BDD). This scheme is IND-CPA secure and has two KEM ...
Separating IND-CPA and Circular Security for Unbounded Length Key Cycles
Circular Security every IND-CPA cryptosystem
2017/2/20
One interesting question is whether circular security comes for free from IND-CPA security. Recent works have addressed this question, showing that for all integers n, there exists an IND-CPA scheme t...
Obfuscation ==> (IND-CPA Security =/=> Circular Security)
Circular Security Related Key Attack Obfuscation
2014/3/6
Circular security is an important notion for public-key encryption schemes and is needed by several cryptographic protocols. In circular security the adversary is given an extra ``hint'' consisting of...
Short(resp. Fast)CCA2-Fully-Anonymous Group Signatures using IND-CPA-Encrypted Escrows
Short CCA2-Fully-Anonymous Group Signatures IND-CPA-Encrypted Escrows
2009/3/17
In the newest and strongest security models for group signatures [7, 10, 41], attackers are
given the capability to query an Open Oracle, OO, in order to obtain the signer identity of the queried
si...