Petr Švenda

Minerva: The curse of ECDSA nonces

2020 · IACR Transactions on Cryptographic Hardware and Embedded Systems

We present our discovery of a group of side-channel vulnerabilities in implementations of the ECDSA signature algorithm in a widely used Atmel AT90SC FIPS 140-2 certified smartcard chip and five cryptographic libraries (libgcrypt, wolfSSL, MatrixSSL, …

Secure Cloud Storage System for Digital Evidence

2023

The paper presents a secure cloud storage system for handling and storing digital evidence. The proposed system allows users to use two-factor authentication based on smart cards to increase access control security. The system enables …