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Improving Practical UC-Secure Commitments based on the DDH Assumption
universally composable commitments adaptive security public-key cryptography
2016/6/29
At Eurocrypt 2011, Lindell presented practical static and adaptively UC-secure commitment
schemes based on the DDH assumption. Later, Blazy et al. (at ACNS 2013) improved the effi-
ciency of the Lin...
Efficiently Obfuscating Re-Encryption Program under DDH Assumption
Re-encryption circuit Average-case secure obfuscation DDH Assumption
2015/12/23
A re-encryption program (or a circuit) converts a ciphertext encrypted under Alice’s public
key pk1 to a ciphertext of the same message encrypted under Bob’s public key pk2. Hohenberger et
al. (TCC ...
Highly-Efficient Universally-Composable Commitments based on the DDH Assumption
cryptographic protocols / universal composability commitment schemes concrete efficiency
2012/3/28
Universal composability (or UC security) provides very strong security guarantees for protocols that run in complex real-world environments. In particular, security is guaranteed to hold when the prot...
Efficiency-Improved Fully Simulatable Adaptive OT under the DDH Assumption
Adaptive OT veri able shues DDH standard model
2010/7/13
At Asiacrypt 2009, Kurosawa and Nojima showed a fully simulatable adaptive oblivious transfer (OT) protocol under the DDH assumption in the standard model. However, Green and Hohenberger pointed out t...
Chosen ciphertext secure public key encryption under DDH assumption with short ciphertext
public key encryption IND-CCA2 DDH
2009/6/5
An efficient variant of the ElGamal public key encryption scheme is proposed which is
provably secure against adaptive chosen ciphertext attacks(IND-CCA2) under the decisional Diffie-
Hellman(DDH) a...
Efficient Pseudorandom Generators Based on the DDH Assumption
Pseudorandom Generators DDH Assumption
2008/12/18
A family of pseudorandom generators based on the decisional Diffie-
Hellman assumption is proposed. The new construction is a modified and generalized
version of the Dual Elliptic Curve generator pr...