{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:JISYY5CHBFDHUPMYGQHAOIFI3M","short_pith_number":"pith:JISYY5CH","canonical_record":{"source":{"id":"1504.07948","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-04-29T18:16:35Z","cross_cats_sorted":[],"title_canon_sha256":"f22ef42e9fdde6160260af58011cfaf422a163c08721ac19b619ce78730f4393","abstract_canon_sha256":"fdd1dac3b752244df19b69c867f98b7ab18ea7d26a7c627b8dbdc80e345f6af8"},"schema_version":"1.0"},"canonical_sha256":"4a258c744709467a3d98340e0720a8db26b26c93d25af10d204d9d597c140c72","source":{"kind":"arxiv","id":"1504.07948","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.07948","created_at":"2026-05-18T02:17:10Z"},{"alias_kind":"arxiv_version","alias_value":"1504.07948v2","created_at":"2026-05-18T02:17:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.07948","created_at":"2026-05-18T02:17:10Z"},{"alias_kind":"pith_short_12","alias_value":"JISYY5CHBFDH","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JISYY5CHBFDHUPMY","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JISYY5CH","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:JISYY5CHBFDHUPMYGQHAOIFI3M","target":"record","payload":{"canonical_record":{"source":{"id":"1504.07948","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-04-29T18:16:35Z","cross_cats_sorted":[],"title_canon_sha256":"f22ef42e9fdde6160260af58011cfaf422a163c08721ac19b619ce78730f4393","abstract_canon_sha256":"fdd1dac3b752244df19b69c867f98b7ab18ea7d26a7c627b8dbdc80e345f6af8"},"schema_version":"1.0"},"canonical_sha256":"4a258c744709467a3d98340e0720a8db26b26c93d25af10d204d9d597c140c72","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:10.718024Z","signature_b64":"wuZUmrZaHFpk6bq9mt5ia09h6ncbow0AUGHpRCUZxwVMqz0aKsS+uWN4Z43qPJsGv3woQLs0C80C5f+HEaYqDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a258c744709467a3d98340e0720a8db26b26c93d25af10d204d9d597c140c72","last_reissued_at":"2026-05-18T02:17:10.717370Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:10.717370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.07948","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:17:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CMo2u3bCdVXSviWYG5lWe8K6McW1OxG8YpnqTRO/52V3IvLCYRBLJfpE8UAlzQjmZ6o1584d+2/cIMr+ZZO7Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:34:04.711370Z"},"content_sha256":"092fc6d18c174e791ca2873681dbb44aeb285fafd2deef3c458c488eb4f0c0fa","schema_version":"1.0","event_id":"sha256:092fc6d18c174e791ca2873681dbb44aeb285fafd2deef3c458c488eb4f0c0fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:JISYY5CHBFDHUPMYGQHAOIFI3M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decomposing, Comparing, and Synthesizing Access Control Expressiveness Simulations (Extended Version)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Adam J. Lee, William C. Garrison III","submitted_at":"2015-04-29T18:16:35Z","abstract_excerpt":"Access control is fundamental to computer security, and has thus been the subject of extensive formal study. In particular, *relative expressiveness analysis* techniques have used formal mappings called *simulations* to explore whether one access control system is capable of emulating another, thereby comparing the expressive power of these systems. Unfortunately, the notions of expressiveness simulation that have been explored vary widely, which makes it difficult to compare results in the literature, and even leads to apparent contradictions between results. Furthermore, some notions of expr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.07948","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:17:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eBADdPm6VERY051jzB8APdoJGJoiUm1R2GSfUyIMuP2nWZF1ifOrbhts3/sMzEDeSCbUHnPOQf+gB5/v1VmzDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:34:04.712504Z"},"content_sha256":"66d5c3ea9ddc9a51a6fd96a77e2dbcecc7ec28a23e1eba272147f19993320e52","schema_version":"1.0","event_id":"sha256:66d5c3ea9ddc9a51a6fd96a77e2dbcecc7ec28a23e1eba272147f19993320e52"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JISYY5CHBFDHUPMYGQHAOIFI3M/bundle.json","state_url":"https://pith.science/pith/JISYY5CHBFDHUPMYGQHAOIFI3M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JISYY5CHBFDHUPMYGQHAOIFI3M/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T06:34:04Z","links":{"resolver":"https://pith.science/pith/JISYY5CHBFDHUPMYGQHAOIFI3M","bundle":"https://pith.science/pith/JISYY5CHBFDHUPMYGQHAOIFI3M/bundle.json","state":"https://pith.science/pith/JISYY5CHBFDHUPMYGQHAOIFI3M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JISYY5CHBFDHUPMYGQHAOIFI3M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JISYY5CHBFDHUPMYGQHAOIFI3M","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":"fdd1dac3b752244df19b69c867f98b7ab18ea7d26a7c627b8dbdc80e345f6af8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-04-29T18:16:35Z","title_canon_sha256":"f22ef42e9fdde6160260af58011cfaf422a163c08721ac19b619ce78730f4393"},"schema_version":"1.0","source":{"id":"1504.07948","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.07948","created_at":"2026-05-18T02:17:10Z"},{"alias_kind":"arxiv_version","alias_value":"1504.07948v2","created_at":"2026-05-18T02:17:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.07948","created_at":"2026-05-18T02:17:10Z"},{"alias_kind":"pith_short_12","alias_value":"JISYY5CHBFDH","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JISYY5CHBFDHUPMY","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JISYY5CH","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:66d5c3ea9ddc9a51a6fd96a77e2dbcecc7ec28a23e1eba272147f19993320e52","target":"graph","created_at":"2026-05-18T02:17:10Z","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":"Access control is fundamental to computer security, and has thus been the subject of extensive formal study. In particular, *relative expressiveness analysis* techniques have used formal mappings called *simulations* to explore whether one access control system is capable of emulating another, thereby comparing the expressive power of these systems. Unfortunately, the notions of expressiveness simulation that have been explored vary widely, which makes it difficult to compare results in the literature, and even leads to apparent contradictions between results. Furthermore, some notions of expr","authors_text":"Adam J. Lee, William C. Garrison III","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-04-29T18:16:35Z","title":"Decomposing, Comparing, and Synthesizing Access Control Expressiveness Simulations (Extended Version)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.07948","kind":"arxiv","version":2},"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":"sha256:092fc6d18c174e791ca2873681dbb44aeb285fafd2deef3c458c488eb4f0c0fa","target":"record","created_at":"2026-05-18T02:17:10Z","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":"fdd1dac3b752244df19b69c867f98b7ab18ea7d26a7c627b8dbdc80e345f6af8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-04-29T18:16:35Z","title_canon_sha256":"f22ef42e9fdde6160260af58011cfaf422a163c08721ac19b619ce78730f4393"},"schema_version":"1.0","source":{"id":"1504.07948","kind":"arxiv","version":2}},"canonical_sha256":"4a258c744709467a3d98340e0720a8db26b26c93d25af10d204d9d597c140c72","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4a258c744709467a3d98340e0720a8db26b26c93d25af10d204d9d597c140c72","first_computed_at":"2026-05-18T02:17:10.717370Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:10.717370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wuZUmrZaHFpk6bq9mt5ia09h6ncbow0AUGHpRCUZxwVMqz0aKsS+uWN4Z43qPJsGv3woQLs0C80C5f+HEaYqDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:10.718024Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.07948","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:092fc6d18c174e791ca2873681dbb44aeb285fafd2deef3c458c488eb4f0c0fa","sha256:66d5c3ea9ddc9a51a6fd96a77e2dbcecc7ec28a23e1eba272147f19993320e52"],"state_sha256":"2437fdfcd22a1259af6a78d740bd510e41679bf641600c5bd2a36fab81d9452d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mzPL2cklJ/nwP0VoTINNqKZIGvQU5If/AKD4Vq3J/g5LoRSSbY3NbHYaXDztf10JcUXdoHSy/dTEgtnNg5beBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T06:34:04.717052Z","bundle_sha256":"7d93f7e6ee6ad0155c6d8164e1ec280987950cce7f269b7dd506d47c7f292f03"}}