COSIC seminar 'Practical and Tightly-Secure Digital Signatures...' (Tibor Jager)

COSIC seminar – Practical and Tightly-Secure Digital Signatures and Authenticated Key Exchange – Tibor Jager (Bergische Universität Wuppertal)

Tight security is increasingly gaining importance in real-world cryptography, as it allows to choose cryptographic parameters in a way that is supported by a security proof, without the need to sacrifice efficiency by compensating the security loss of a reduction with larger parameters. This talk will give an overview of recent results on tightly-secure digital signatures and authenticated key exchange (AKE), covering fundamental technical challenges, new techniques, and recent results from CRYPTO 2018 and 2019.