Public Key Cryptography
RSA Conference 2024 · Track Session
This talk, presented by Olivier Blazy, a Professor at Ecole Polytechnique, delves into advanced concepts within public key cryptography, specifically focusing on **predicate encryption** and its application to **identity-based revocation (IBR)** and **inner product encryption (IPE)** schemes. The core objective of the research is to overcome significant limitations in existing cryptographic primitives, particularly the absence of fully secure **non-zero inner product encryption (NIPE)** and efficient identity-based revocation systems that offer strong privacy guarantees in the standard model. The work aims to construct schemes that are not only confidential but also achieve **full attribute-hiding** and **function privacy**, ensuring that sensitive information embedded in ciphertexts and secret keys remains concealed.