{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7PCBCCCZAG7AGEDB46PIYF2S3R","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":"3f974bdcce1e686c8ce7da7c14fcacf64b18c1f36a2841afbbaf183c80e3c482","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-11-04T13:53:36Z","title_canon_sha256":"8f4bfb02fc25a766d4eddc57ab35e31590c886a1e66772925e780d6c63a89e1f"},"schema_version":"1.0","source":{"id":"1711.01439","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.01439","created_at":"2026-05-18T00:21:09Z"},{"alias_kind":"arxiv_version","alias_value":"1711.01439v2","created_at":"2026-05-18T00:21:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.01439","created_at":"2026-05-18T00:21:09Z"},{"alias_kind":"pith_short_12","alias_value":"7PCBCCCZAG7A","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7PCBCCCZAG7AGEDB","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7PCBCCCZ","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:70a1e139034a00f6bf8e00ed1a4e316e3f34f21408fef735e56c5926a656d35c","target":"graph","created_at":"2026-05-18T00:21:09Z","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 present a secure communication system constructed using pairs of nonlinear photonic physical unclonable functions (PUFs) that harness physical chaos in integrated silicon micro-cavities. Compared to a large, electronically stored one-time pad, our method provisions large amounts of information within the intrinsically complex nanostructure of the micro-cavities. By probing a micro-cavity with a rapid sequence of spectrally-encoded ultrafast optical pulses and measuring the lightwave responses, we experimentally demonstrate the ability to extract 2.4 Gb of key material from a single micro-ca","authors_text":"A. Brinton Cooper, Amy C. Foster, Brian C. Grubel, Bryan T. Bosworth, Mark A. Foster, Michael R. Kossey","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-11-04T13:53:36Z","title":"Secure Communications using Nonlinear Silicon Photonic Keys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.01439","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":"sha256:8c05845eba581b264c2448a14705f9abf965613a4a257c5791623b3215e4fc65","target":"record","created_at":"2026-05-18T00:21:09Z","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":"3f974bdcce1e686c8ce7da7c14fcacf64b18c1f36a2841afbbaf183c80e3c482","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-11-04T13:53:36Z","title_canon_sha256":"8f4bfb02fc25a766d4eddc57ab35e31590c886a1e66772925e780d6c63a89e1f"},"schema_version":"1.0","source":{"id":"1711.01439","kind":"arxiv","version":2}},"canonical_sha256":"fbc411085901be031061e79e8c1752dc66ae44d57ff8ca6f9c8541f71c664b35","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fbc411085901be031061e79e8c1752dc66ae44d57ff8ca6f9c8541f71c664b35","first_computed_at":"2026-05-18T00:21:09.973734Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:09.973734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9BkYzCn+3Qk6xbpeOdHUZWgVdXG/bPqcV/UhTG+cpvd6GRWv4p+u5LlRm2xFElnOK6o9fwzDYaVtGHB8bqYWDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:09.974239Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.01439","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8c05845eba581b264c2448a14705f9abf965613a4a257c5791623b3215e4fc65","sha256:70a1e139034a00f6bf8e00ed1a4e316e3f34f21408fef735e56c5926a656d35c"],"state_sha256":"d8e27a074182cf53d446aec196fc2430b02fe9af250f6bd43d2f1137083a05b2"}