{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2003:CWOQ6LWZR6C6SWSPJ6GLOF2P63","short_pith_number":"pith:CWOQ6LWZ","schema_version":"1.0","canonical_sha256":"159d0f2ed98f85e95a4f4f8cb7174ff6deaa68bee4a4688c304a68adf9b4219c","source":{"kind":"arxiv","id":"quant-ph/0311055","version":2},"attestation_state":"computed","paper":{"title":"Secure direct communication using step-split Einstein-Podolsky-Rosen pair","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Qing-yu Cai","submitted_at":"2003-11-10T13:21:44Z","abstract_excerpt":"We presen a secure direct communication protocol by using step-split Einstein-Podolsky-Rosen (EPR) pair. In this communication protocol, Alice first sends one qubit of an EPR pair to Bob. Bob sends a receipt signal to Alice through public channel when he receives Alice's first qubit. Alice performs her encoding operations on the second qubit and sends this qubit to Bob. Bob performs a Bell-basis measurement to draw Alice's information. The security of this protocol is based on `High fidelity implies low entropy'. If Eve want to eavesdrop Alice's information, she has to attack both qubits of th"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"quant-ph/0311055","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2003-11-10T13:21:44Z","cross_cats_sorted":[],"title_canon_sha256":"deb3fbd05a4d720a71dead0a39eca6bee2857c5092a9882dc68a38d5566cc393","abstract_canon_sha256":"9ea5b4125ab13ea744d81d7c2228dad71d478059d66d5573dc5820014a930043"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:05:03.789603Z","signature_b64":"zfeiqZVy5JyAhfXf+zg/Cc9f+Mt+40RhG8m0PsOuTxIcY4gdCqxEhVyd4ZXv7JMAZV7rRtnLoUHg8SIlzSUzAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"159d0f2ed98f85e95a4f4f8cb7174ff6deaa68bee4a4688c304a68adf9b4219c","last_reissued_at":"2026-05-18T01:05:03.789018Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:05:03.789018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Secure direct communication using step-split Einstein-Podolsky-Rosen pair","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Qing-yu Cai","submitted_at":"2003-11-10T13:21:44Z","abstract_excerpt":"We presen a secure direct communication protocol by using step-split Einstein-Podolsky-Rosen (EPR) pair. In this communication protocol, Alice first sends one qubit of an EPR pair to Bob. Bob sends a receipt signal to Alice through public channel when he receives Alice's first qubit. Alice performs her encoding operations on the second qubit and sends this qubit to Bob. Bob performs a Bell-basis measurement to draw Alice's information. The security of this protocol is based on `High fidelity implies low entropy'. If Eve want to eavesdrop Alice's information, she has to attack both qubits of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0311055","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0311055","created_at":"2026-05-18T01:05:03.789134+00:00"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0311055v2","created_at":"2026-05-18T01:05:03.789134+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0311055","created_at":"2026-05-18T01:05:03.789134+00:00"},{"alias_kind":"pith_short_12","alias_value":"CWOQ6LWZR6C6","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_16","alias_value":"CWOQ6LWZR6C6SWSP","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_8","alias_value":"CWOQ6LWZ","created_at":"2026-05-18T12:25:51.375804+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63","json":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63.json","graph_json":"https://pith.science/api/pith-number/CWOQ6LWZR6C6SWSPJ6GLOF2P63/graph.json","events_json":"https://pith.science/api/pith-number/CWOQ6LWZR6C6SWSPJ6GLOF2P63/events.json","paper":"https://pith.science/paper/CWOQ6LWZ"},"agent_actions":{"view_html":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63","download_json":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63.json","view_paper":"https://pith.science/paper/CWOQ6LWZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=quant-ph/0311055&json=true","fetch_graph":"https://pith.science/api/pith-number/CWOQ6LWZR6C6SWSPJ6GLOF2P63/graph.json","fetch_events":"https://pith.science/api/pith-number/CWOQ6LWZR6C6SWSPJ6GLOF2P63/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63/action/storage_attestation","attest_author":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63/action/author_attestation","sign_citation":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63/action/citation_signature","submit_replication":"https://pith.science/pith/CWOQ6LWZR6C6SWSPJ6GLOF2P63/action/replication_record"}},"created_at":"2026-05-18T01:05:03.789134+00:00","updated_at":"2026-05-18T01:05:03.789134+00:00"}