{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MWKQ5GJA3XSNAXKORBP7MG3CMR","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":"beba20ac1d154a37d62ade3e271e615dde5dd6f5339b4436e177807e30461334","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2018-03-13T18:58:06Z","title_canon_sha256":"cbfa4cf3540e6b5e9ec7809135d1fea2156c9ffc32541c81c4c90d13c6c3663f"},"schema_version":"1.0","source":{"id":"1803.05004","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.05004","created_at":"2026-05-18T00:21:02Z"},{"alias_kind":"arxiv_version","alias_value":"1803.05004v1","created_at":"2026-05-18T00:21:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.05004","created_at":"2026-05-18T00:21:02Z"},{"alias_kind":"pith_short_12","alias_value":"MWKQ5GJA3XSN","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MWKQ5GJA3XSNAXKO","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MWKQ5GJA","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:3ef6da7631198c929e2cddf679a9e03f27c324d4ef5eca80873880146b225c80","target":"graph","created_at":"2026-05-18T00:21:02Z","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":"The purpose of this paper is to describe and analyze the Cayley-Purser algorithm, which is a public-key cryptosystem proposed by Flannery in 1999. I will present two attacks on it, one of which is apparently new. I will also examine a variant of the Cayley-Purser algorithm that was patented by Slavin in 2008, and show that it is also insecure.","authors_text":"Douglas R. Stinson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2018-03-13T18:58:06Z","title":"A Brief Retrospective Look at the Cayley-Purser Public-key Cryptosystem, 19 Years Later"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.05004","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":"sha256:4bae3c49dc5c92948126ca9fb7d87d714d7efb0ba9b99b0fae88a91f95d396e0","target":"record","created_at":"2026-05-18T00:21:02Z","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":"beba20ac1d154a37d62ade3e271e615dde5dd6f5339b4436e177807e30461334","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2018-03-13T18:58:06Z","title_canon_sha256":"cbfa4cf3540e6b5e9ec7809135d1fea2156c9ffc32541c81c4c90d13c6c3663f"},"schema_version":"1.0","source":{"id":"1803.05004","kind":"arxiv","version":1}},"canonical_sha256":"65950e9920dde4d05d4e885ff61b62644da038fc0e0faa7453b04fae3e5f0852","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65950e9920dde4d05d4e885ff61b62644da038fc0e0faa7453b04fae3e5f0852","first_computed_at":"2026-05-18T00:21:02.322169Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:02.322169Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qAvVp6nHTE4ttRvY+9D9Zu01jThI/Xjn2NwSXHNGipjj4V6AcIONDvzJ6z4KS3FhzcHLcqXCgfshOXMCBa/uBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:02.322624Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.05004","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bae3c49dc5c92948126ca9fb7d87d714d7efb0ba9b99b0fae88a91f95d396e0","sha256:3ef6da7631198c929e2cddf679a9e03f27c324d4ef5eca80873880146b225c80"],"state_sha256":"3be4ebf9be84e2959ed0ca089cd8c7359ddfabec13ac1ba2a161afcdacd7252c"}