Shinsaku Kiyomoto

Fault Injection Attack on Salsa20 and ChaCha and a Lightweight Countermeasure

2017

We propose a fault injection attack on Salsa20 and ChaCha stream ciphers. In these stream ciphers, the initial matrix X, which consists of constants, a key, a block counter, and a nonce, is added to …

Lattice-based Signcryption with Equality Test in Standard Model

2020 · arXiv (Cornell University)

A signcryption, which is an integration of a public key encryption and a digital signature, can provide confidentiality and authenticity simultaneously. Additionally, a signcryption associated with equality test allows a third party (e.g., a cloud …