2 citations · 7 across the 7 of their papers we have counts for
7 papers
URDP: General Framework for Direct CCA2 Security from any Lattice-Based PKE Scheme
Roohallah Rastaghi
Design efficient lattice-based cryptosystem secure against adaptive chosen ciphertext attack (IND-CCA2) is a challenge problem. To the date, full CCA2-security of all proposed latt…
Cryptanalysis and Improvement of Akleylek et al.'s cryptosystem
Roohallah Rastaghi
Akleylek et al. [S. Akleylek, L. Emmungil and U. Nuriyev, A mod ified algorithm for peer-to-peer security, journal of Appl. Comput. Math., vol. 6(2), pp.258-264, 2007.], introduced…
An Efficient CCA2-Secure Variant of the McEliece Cryptosystem in the Standard Model
Roohallah Rastaghi
Recently, a few chosen-ciphertext secure (CCA2-secure) variants of the McEliece public-key encryption (PKE) scheme in the standard model were introduced. All the proposed schemes a…
New Approach for CCA2-Secure Post-Quantum Cryptosystem Using Knapsack Problem
Roohallah Rastaghi
Chosen-ciphertext security, which guarantees confidentiality of encrypted messages even in the presence of a decryption oracle, has become the defacto notion of security for public…
An Efficient Encryption Algorithm for P2P Networks Robust Against Man-in-the-Middle Adversary
Roohallah Rastaghi
Peer-to-peer (P2P) networks have become popular as a new paradigm for information exchange and are being used in many applications such as file sharing, distributed computing, vide…
Cryptanalysis of a Public-key Cryptosystem Using Lattice Basis Reduction Algorithm
Roohallah Rastaghi, Hamid R. Dalili Oskouei
We proposed a new attack against Hwang et al.'s cryptosystem. This cryptosystem uses a super-increasing sequence as private key and the authors investigate a new algorithm called p…