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Proceedings of the 4th ACM Workshop on Attacks and Solutions in Hardware Security
The currently proposed RISC-V True Random Number Generator (TRNG) architecture breaks with previous ISA TRNG practice by splitting the Entropy Source (ES) component away from cryptographic PRNGs into a separate interface, and in its use of polling. We describe the interface, its use in cryptography, and offer additional discussion, background, and rationale for various aspects of it. This design is informed by lessons learned from earlier mainstream ISAs, recently introduced SP 800-90B and FIPSdoi:10.1145/3411504.3421212 fatcat:w4ec6p3nkbcbbkjngtwbuzalga