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ASIACRYPT
2001
Springer
13 years 9 months ago
Threshold Cryptosystems Secure against Chosen-Ciphertext Attacks
Abstract. Semantic security against chosen-ciphertext attacks (INDCCA) is widely believed as the correct security level for public-key encryption scheme. On the other hand, it is o...
Pierre-Alain Fouque, David Pointcheval
TCC
2010
Springer
178views Cryptology» more  TCC 2010»
14 years 1 months ago
Threshold Decryption and Zero-Knowledge Proofs for Lattice-Based Cryptosystems
We present a variant of Regev’s cryptosystem first presented in [Reg05], but with a new choice of parameters. By a recent classical reduction by Peikert we prove the scheme sema...
Rikke Bendlin, Ivan Damgård