Blar i NTNU Open på forfatter "Ringerud, Magnus"
-
Signatures with Tight Multi-user Security from Search Assumptions
Pan, Jiaxin; Ringerud, Magnus (Peer reviewed; Journal article, 2020)We construct two tightly secure signature schemes based on the computational Diffie-Hellman (CDH) and factoring assumptions in the random oracle model. Our schemes are proven secure in the multi-user setting, and their ... -
Signed (Group) Diffie–Hellman Key Exchange with Tight Security
Pan, Jiaxin; Qian, Chen; Ringerud, Magnus (Peer reviewed; Journal article, 2022)We propose the first tight security proof for the ordinary two-message signed Diffie–Hellman key exchange protocol in the random oracle model. Our proof is based on the strong computational Diffie–Hellman assumption and ... -
Signed Diffie-Hellman Key Exchange with Tight Security
Pan, Jiaxin; Qian, Chen; Ringerud, Magnus (Peer reviewed; Journal article, 2021)We propose the first tight security proof for the ordinary two-message signed Diffie-Hellman key exchange protocol in the random oracle model. Our proof is based on the strong computational Diffie-Hellman assumption and ... -
Tight Security for Authenticated Key Exchange Protocols and Signature Schemes
Ringerud, Magnus (Doctoral theses at NTNU;2023:244, Doctoral thesis, 2023) -
WalnutDSA: Another attempt at braid group cryptography
Ringerud, Magnus (Master thesis, 2019)Hovedformålet med denne oppgaven er å studere det digitale signatursystemet WalnutDSA, som ble foreslått til det amerikanske National Institute of Standards and Technology (NIST) sin ``Post-Quantum Cryptography Standardization'' ...