{"paper":{"title":"Granite: A Modular Methodology for Foundational Verification of Hardware-Software Leakage Contracts","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Adam Chlipala, Andres Erbsen, Stella Lau","submitted_at":"2026-07-29T21:44:57Z","abstract_excerpt":"Granite is a methodology for modular verification of both functional correctness and nonleakage of RTL processors against ISA contracts. We prove that the cycle-by-cycle timing of a pipelined RISC design--with speculation, precise interrupts, and I/O--is determined solely by observables specified in an ISA leakage contract. For programs that keep observables independent of secrets (i.e., following the cryptographic-constant-time discipline), this result rules out information leakage through known and unknown timing side channels.\n  Granite's specifications only constrain functional correctness"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.27480","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.27480/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}