Cryptography is an indispensable tool used to protect information in computing systems. It is
used everywhere and by billions of people worldwide on a daily basis. It is used to protect …

Cryptography plays a key role in ensuring the privacy and integrity of data and the security of
computer networks. Introduction to Modern Cryptography provides a rigorous yet accessible …

Public key cryptography is a major interdisciplinary subject with many real-world
applications, such as digital signatures. A strong background in the mathematics underlying …

Given an arbitrary k-bit to k-bit trapdoor permutation f and a hash function, we exhibit an
encryption scheme for which (i) any string x of length slightly less than k bits can be …

Sequences of Games: A Tool for Taming Complexity in Security Proofs Page 1 Sequences of
Games: A Tool for Taming Complexity in Security Proofs ∗ Victor Shoup† January 18, 2006 …

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

As cryptographic proofs have become essentially unverifiable, cryptographers have argued
in favor of developing techniques that help tame the complexity of their proofs. Game-based …

In this paper, we present a hybrid encryption scheme that is chosen ciphertext secure in the
quantum random oracle model. Our scheme is a combination of an asymmetric and a …

Users often wish to participate in online groups anonymously, but misbehaving users may
abuse this anonymity to disrupt the group's communication. Existing messaging protocols …

The game-playing technique is a powerful tool for analyzing cryptographic constructions. We
illustrate this by using games as the central tool for proving security of three-key triple …