This paper presents a generic conversion from weak asymmetric and symmetric encryption
schemes to an asymmetric encryption scheme that is chosen-ciphertext secure in the …

Key-encapsulation mechanisms secure against chosen ciphertext attacks (IND-CCA-secure
KEMs) in the quantum random oracle model have been proposed by Boneh, Dagdelen …

Seven years after the optimal asymmetric encryption padding (OAEP) which makes chosen-
ciphertext secure encryption scheme from any trapdoor one-way permutation (but whose …

We describe a simple technique that can be used to substantially reduce the key and
ciphertext size of various lattice based cryptosystems and trapdoor functions of the kind …

We construct two efficient Identity-Based Encryption (IBE) systems that admit selective-
identity security reductions without random oracles in groups equipped with a bilinear map …

Identity-based encryption (IBE) is a special asymmetric encryption method where a public
encryption key can be an arbitrary identifier and the corresponding private decryption key is …

Semantic security against chosen-ciphertext attacks (IND-CCA) is widely believed as the
correct security level for public-key encryption scheme. On the other hand, it is often …

Optimizations for NTRU Page 89 Optimizations for NTRU Jeffrey Hoffstein and Joseph
Silverman Abstract. In this note we describe a variety of methods that may be used to increase …

The first practical identity based encryption (IBE) scheme was proposed by Boneh and
Franklin in [BF03]. In this work we point out that there is a flawed step in the security …

In this work, we abstract some key ingredients in previous LWE-and RLWE-based key
exchange protocols, by introducing and formalizing the building tool, referred to as key …