{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:Z45KMEP6IRNXKJN5MNU44IK6ZG","short_pith_number":"pith:Z45KMEP6","canonical_record":{"source":{"id":"2101.01950","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-01-06T10:19:13Z","cross_cats_sorted":[],"title_canon_sha256":"db1f7539b0007ee5c8776b81119f6d4e1f1aa285593725f34286936c0c252845","abstract_canon_sha256":"edfffc445a39fc88c1dac77ecdd513c3a33d80001eedba70022f46b2465a055e"},"schema_version":"1.0"},"canonical_sha256":"cf3aa611fe445b7525bd6369ce215ec9a146680374b3e27f9688bc72307aedc2","source":{"kind":"arxiv","id":"2101.01950","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.01950","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"arxiv_version","alias_value":"2101.01950v2","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.01950","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_12","alias_value":"Z45KMEP6IRNX","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_16","alias_value":"Z45KMEP6IRNXKJN5","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_8","alias_value":"Z45KMEP6","created_at":"2026-07-05T02:24:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:Z45KMEP6IRNXKJN5MNU44IK6ZG","target":"record","payload":{"canonical_record":{"source":{"id":"2101.01950","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-01-06T10:19:13Z","cross_cats_sorted":[],"title_canon_sha256":"db1f7539b0007ee5c8776b81119f6d4e1f1aa285593725f34286936c0c252845","abstract_canon_sha256":"edfffc445a39fc88c1dac77ecdd513c3a33d80001eedba70022f46b2465a055e"},"schema_version":"1.0"},"canonical_sha256":"cf3aa611fe445b7525bd6369ce215ec9a146680374b3e27f9688bc72307aedc2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:24:39.614612Z","signature_b64":"T0PNk2BFmHondlS2VpA8+2E838u5WsKfQOWm1XCXLDsB0euDh1OYvqP2gGZP5WsZSevNxtQiXuElLXXnoz+dAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf3aa611fe445b7525bd6369ce215ec9a146680374b3e27f9688bc72307aedc2","last_reissued_at":"2026-07-05T02:24:39.614200Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:24:39.614200Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.01950","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":"2026-07-05T02:24:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"02Vi4UQv0LuMu/ngO92IYH9v28U5MbKcSHfJqhUC1jeLjoMmRcbjDbAte4WQ4qihe5/8YIQ8KgEYN4uynZrjAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T01:21:54.661744Z"},"content_sha256":"9f86328b09885bf270afb436e1b638bd9242b6934327a5918d949c87a7741f29","schema_version":"1.0","event_id":"sha256:9f86328b09885bf270afb436e1b638bd9242b6934327a5918d949c87a7741f29"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:Z45KMEP6IRNXKJN5MNU44IK6ZG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HERMES: Scalable, Secure, and Privacy-Enhancing Vehicle Access System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Bart Mennink, Bart Preneel, Dragos Rotaru, Iraklis Symeonidis, Mustafa A. Mustafa, Panos Papadimitratos","submitted_at":"2021-01-06T10:19:13Z","abstract_excerpt":"We propose HERMES, a scalable, secure, and privacy-enhancing system for users to share and access vehicles. HERMES securely outsources operations of vehicle access token generation to a set of untrusted servers. It builds on an earlier proposal, namely SePCAR [1], and extends the system design for improved efficiency and scalability. To cater to system and user needs for secure and private computations, HERMES utilizes and combines several cryptographic primitives with secure multiparty computation efficiently. It conceals secret keys of vehicles and transaction details from the servers, inclu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.01950","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2101.01950/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:24:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vkw3JxLhEG1q8u1Ba1OIYgJDiCP+iFgU2Ib2LAqu71ym/B3z/vWqzs5sSJBsoniZpIgysE2Qv1bag98ivQD7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T01:21:54.662276Z"},"content_sha256":"c6b59c2a7bea99a4d5e90324fb1f5971f2713db35bf518228843628e7452a692","schema_version":"1.0","event_id":"sha256:c6b59c2a7bea99a4d5e90324fb1f5971f2713db35bf518228843628e7452a692"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z45KMEP6IRNXKJN5MNU44IK6ZG/bundle.json","state_url":"https://pith.science/pith/Z45KMEP6IRNXKJN5MNU44IK6ZG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z45KMEP6IRNXKJN5MNU44IK6ZG/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":"2026-08-13T01:21:54Z","links":{"resolver":"https://pith.science/pith/Z45KMEP6IRNXKJN5MNU44IK6ZG","bundle":"https://pith.science/pith/Z45KMEP6IRNXKJN5MNU44IK6ZG/bundle.json","state":"https://pith.science/pith/Z45KMEP6IRNXKJN5MNU44IK6ZG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z45KMEP6IRNXKJN5MNU44IK6ZG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Z45KMEP6IRNXKJN5MNU44IK6ZG","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":"edfffc445a39fc88c1dac77ecdd513c3a33d80001eedba70022f46b2465a055e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-01-06T10:19:13Z","title_canon_sha256":"db1f7539b0007ee5c8776b81119f6d4e1f1aa285593725f34286936c0c252845"},"schema_version":"1.0","source":{"id":"2101.01950","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.01950","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"arxiv_version","alias_value":"2101.01950v2","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.01950","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_12","alias_value":"Z45KMEP6IRNX","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_16","alias_value":"Z45KMEP6IRNXKJN5","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_8","alias_value":"Z45KMEP6","created_at":"2026-07-05T02:24:39Z"}],"graph_snapshots":[{"event_id":"sha256:c6b59c2a7bea99a4d5e90324fb1f5971f2713db35bf518228843628e7452a692","target":"graph","created_at":"2026-07-05T02:24:39Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2101.01950/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose HERMES, a scalable, secure, and privacy-enhancing system for users to share and access vehicles. HERMES securely outsources operations of vehicle access token generation to a set of untrusted servers. It builds on an earlier proposal, namely SePCAR [1], and extends the system design for improved efficiency and scalability. To cater to system and user needs for secure and private computations, HERMES utilizes and combines several cryptographic primitives with secure multiparty computation efficiently. It conceals secret keys of vehicles and transaction details from the servers, inclu","authors_text":"Bart Mennink, Bart Preneel, Dragos Rotaru, Iraklis Symeonidis, Mustafa A. Mustafa, Panos Papadimitratos","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-01-06T10:19:13Z","title":"HERMES: Scalable, Secure, and Privacy-Enhancing Vehicle Access System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.01950","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":"sha256:9f86328b09885bf270afb436e1b638bd9242b6934327a5918d949c87a7741f29","target":"record","created_at":"2026-07-05T02:24:39Z","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":"edfffc445a39fc88c1dac77ecdd513c3a33d80001eedba70022f46b2465a055e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-01-06T10:19:13Z","title_canon_sha256":"db1f7539b0007ee5c8776b81119f6d4e1f1aa285593725f34286936c0c252845"},"schema_version":"1.0","source":{"id":"2101.01950","kind":"arxiv","version":2}},"canonical_sha256":"cf3aa611fe445b7525bd6369ce215ec9a146680374b3e27f9688bc72307aedc2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf3aa611fe445b7525bd6369ce215ec9a146680374b3e27f9688bc72307aedc2","first_computed_at":"2026-07-05T02:24:39.614200Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:24:39.614200Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T0PNk2BFmHondlS2VpA8+2E838u5WsKfQOWm1XCXLDsB0euDh1OYvqP2gGZP5WsZSevNxtQiXuElLXXnoz+dAg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:24:39.614612Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.01950","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f86328b09885bf270afb436e1b638bd9242b6934327a5918d949c87a7741f29","sha256:c6b59c2a7bea99a4d5e90324fb1f5971f2713db35bf518228843628e7452a692"],"state_sha256":"ea4807b7c615f04552516c0b8790fd85374a380433230f377be9a55c86658d9f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tHVBb+tX6nFGyVzd0DHE+E2YW3f1kjJgYWSvEtBKJ5G28IHHeyiYC8PzM+LSC3MetBjI1qZDayBuuS54pBeuBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T01:21:54.669142Z","bundle_sha256":"77ad7387b96bbaaa1c86cbdce4c8d80fb964d956257e9b8079dc6ef0cfd13f97"}}