{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:AMKGW2FUWUJGJWT6GZETH57F3L","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1b03f5c9556b75623032bf136baba10311c5be7eb8e333a13eb47d48f380fd66","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-08-28T21:50:55Z","title_canon_sha256":"cb043fb581626e8dda93a60c5194865a1878c2f9668bb0ccf5999ff15f2e497e"},"schema_version":"1.0","source":{"id":"1708.08542","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.08542","created_at":"2026-05-18T00:36:27Z"},{"alias_kind":"arxiv_version","alias_value":"1708.08542v1","created_at":"2026-05-18T00:36:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.08542","created_at":"2026-05-18T00:36:27Z"},{"alias_kind":"pith_short_12","alias_value":"AMKGW2FUWUJG","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"AMKGW2FUWUJGJWT6","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"AMKGW2FU","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:cff359960caab46ea9d79f8d388c65a5f829d2e24950257681eb4a1f6a0a2ee8","target":"graph","created_at":"2026-05-18T00:36:27Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We have formalized the functional specification of HMAC-DRBG (NIST 800-90A), and we have proved its cryptographic security--that its output is pseudorandom--using a hybrid game-based proof. We have also proved that the mbedTLS implementation (C program) correctly implements this functional specification. That proof composes with an existing C compiler correctness proof to guarantee, end-to-end, that the machine language program gives strong pseudorandomness. All proofs (hybrid games, C program verification, compiler, and their composition) are machine-checked in the Coq proof assistant. Our pr","authors_text":"Adam Petcher, Andrew W. Appel, Katherine Q. Ye, Lennart Beringer, Matthew Green, Naphat Sanguansin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-08-28T21:50:55Z","title":"Verified Correctness and Security of mbedTLS HMAC-DRBG"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.08542","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:93f52a3a2ae81ba9334dc16ada6f9fdec679c321db8c53db36e8ab6987a2cf19","target":"record","created_at":"2026-05-18T00:36:27Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1b03f5c9556b75623032bf136baba10311c5be7eb8e333a13eb47d48f380fd66","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-08-28T21:50:55Z","title_canon_sha256":"cb043fb581626e8dda93a60c5194865a1878c2f9668bb0ccf5999ff15f2e497e"},"schema_version":"1.0","source":{"id":"1708.08542","kind":"arxiv","version":1}},"canonical_sha256":"03146b68b4b51264da7e364933f7e5daca0ab57e9cfbbbe155c0260bc3e27af9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03146b68b4b51264da7e364933f7e5daca0ab57e9cfbbbe155c0260bc3e27af9","first_computed_at":"2026-05-18T00:36:27.461549Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:27.461549Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fODRDv3/7C1oECIVDDER9w/zaUs12djzg+GNR3Mkr3+FUzzXDgMntzscTQlx/1dOggrDnLHIfUMU1RpnzRI3DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:27.462208Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.08542","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93f52a3a2ae81ba9334dc16ada6f9fdec679c321db8c53db36e8ab6987a2cf19","sha256:cff359960caab46ea9d79f8d388c65a5f829d2e24950257681eb4a1f6a0a2ee8"],"state_sha256":"28a6b8a33c69da27f162b150da07c028e8f89b3d44ba0273366ea90259e5c12c"}