XDRBG: A Proposed Deterministic Random Bit Generator Based on Any XOF

• Published in: IACR Transactions on Symmetric Cryptology Vol. 2024; no. 1; pp. 5 - 34
• Main Authors: Kelsey, John, Lucks, Stefan, Müller, Stephan
• Format: Journal Article
• Language: English
• Published: Ruhr-Universität Bochum 01.03.2024
• Subjects: backward security; extendable output function (XOF); forward security; pseudorandom bit generation

A deterministic random bit generator (DRBG) generates pseudorandom bits from an unpredictable seed, i.e., a seed drawn from any random source with sufficient entropy. The current paper formalizes a security notion for a DRBG, in which an attacker may make any legal sequence of requests to the DRBG a...