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Security Analysis of ePrint Report 2016/500 "Efficient Identity-Based Encryption and Public-Key Signature from Trapdoor Subgroups"
attack trapdoor subgroup congruential equations
2016/5/30
In this short report we analyse the security of three schemes proposed by J. H. Park et al. in "Efficient Identity-Based Encryption and Public-Key Signature from Trapdoor Subgroups". The schemes make ...
Efficient Identity-Based Encryption and Public-Key Signature from Trapdoor Subgroups
identity-based encryption trapdoor subgroup RSA modulus
2016/5/24
We present a new Identity-Based Encryption (IBE) scheme from a trapdoor subgroup of Z∗n for an RSA modulus n. In a trapdoor subgroup of Z∗n, a subgroup order is hidden and can be used as a...
Efficient Identity-Based Encryption over NTRU Lattices
Lattice Cryptography Identity-Based Encryption Digital Signatures
2016/1/6
Efficient implementations of lattice-based cryptographic schemes
have been limited to only the most basic primitives like encryption
and digital signatures. The main reason for this limitation is th...
New Efficient Identity-Based Encryption From Factorization
Identity-based encryption without pairings without lattices
2014/3/10
Identity Based Encryption (IBE) systems are often constructed using pairings or lattices. Three exceptions are due to Cocks in 2001, Boneh, Gentry and Hamburg in 2007, and Paterson and Srinivasan in 2...
Efficient Identity-Based Encryption Without Random Oracles
Efficient Identity-Based Encryption Random Oracles
2009/3/27
We present the first efficient Identity-Based Encryption (IBE) scheme that is fully secure
without random oracles. We first present our IBE construction and reduce the security of our
scheme to the ...
Efficient Identity-Based Encryption with Tight Security Reduction
ID-based encryption tight security reduction
2009/3/4
In a famous paper of Crypto'01, Boneh and Franklin pro-
posed the first identity-based encryption scheme (IBE), around fifteen
years after the concept was introduced by Shamir. Their scheme security...
Space-Efficient Identity Based Encryption Without Pairings
Space-Efficient Identity Based Encryption Pairings
2008/8/28
Identity Based Encryption (IBE) systems are often constructed using bilinear maps (a.k.a.
pairings) on elliptic curves. One exception is an elegant system due to Cocks which builds an
IBE based on t...