{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:OB7KYMEZ4G63XLTVF7FMMSND2W","short_pith_number":"pith:OB7KYMEZ","canonical_record":{"source":{"id":"1206.0936","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-05T14:06:00Z","cross_cats_sorted":[],"title_canon_sha256":"56e783940bbc2d0e9e77ea41a4c842e1881cfd90e994b81d854216978801eb6a","abstract_canon_sha256":"77b50f14db321064bfc5309f5f39f689cb8474571e12c61c6fd26b78b64070eb"},"schema_version":"1.0"},"canonical_sha256":"707eac3099e1bdbbae752fcac649a3d5889d9253f51a773deffeba5899ee99ed","source":{"kind":"arxiv","id":"1206.0936","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.0936","created_at":"2026-05-18T03:31:43Z"},{"alias_kind":"arxiv_version","alias_value":"1206.0936v2","created_at":"2026-05-18T03:31:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.0936","created_at":"2026-05-18T03:31:43Z"},{"alias_kind":"pith_short_12","alias_value":"OB7KYMEZ4G63","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OB7KYMEZ4G63XLTV","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OB7KYMEZ","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:OB7KYMEZ4G63XLTVF7FMMSND2W","target":"record","payload":{"canonical_record":{"source":{"id":"1206.0936","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-05T14:06:00Z","cross_cats_sorted":[],"title_canon_sha256":"56e783940bbc2d0e9e77ea41a4c842e1881cfd90e994b81d854216978801eb6a","abstract_canon_sha256":"77b50f14db321064bfc5309f5f39f689cb8474571e12c61c6fd26b78b64070eb"},"schema_version":"1.0"},"canonical_sha256":"707eac3099e1bdbbae752fcac649a3d5889d9253f51a773deffeba5899ee99ed","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:31:43.153854Z","signature_b64":"vBvzMY7qDAllzpSSJQUZGl7vhRypuqorHA3J4rRzjQHaP9/ZvDExTOasnerugGCtcmO4Vx8eiXfrQJQJQAU9Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"707eac3099e1bdbbae752fcac649a3d5889d9253f51a773deffeba5899ee99ed","last_reissued_at":"2026-05-18T03:31:43.153038Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:31:43.153038Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.0936","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":"2026-05-18T03:31:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2JrlqKh5O1w8f1a4fY7zZFMqnz+l2qPDJN3Rafpb1U6mhASM9kSDsBFJblH/leF0reL3v/VG8yGKXMpjG45WCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:53:48.994202Z"},"content_sha256":"c49fea3c52c51502b472bd21b4888216fd0f4e3c0bf1c0bd3004710e2299495a","schema_version":"1.0","event_id":"sha256:c49fea3c52c51502b472bd21b4888216fd0f4e3c0bf1c0bd3004710e2299495a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:OB7KYMEZ4G63XLTVF7FMMSND2W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gaussian Post-selection for Continuous Variable Quantum Cryptography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Nathan Walk, Ping Koy Lam, Thomas Symul, Timothy C. Ralph","submitted_at":"2012-06-05T14:06:00Z","abstract_excerpt":"We extend the security proof for continuous variable quantum key distribution protocols using post selection to account for arbitrary eavesdropping attacks by employing the concept of an equivalent protocol where the post-selection is implemented as a series of quantum operations including a virtual distillation. We introduce a particular `Gaussian' post selection and demonstrate that the security can be calculated using only experimentally accessible quantities. Finally we explicitly evaluate the performance for the case of a noisy Gaussian channel in the limit of unbounded key length and fin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.0936","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":"2026-05-18T03:31:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MlCKedW76G+TCnm/8wY2dhrEHfOTvlzXjZBEGM66jV6fonhB3Mzd1HpxuniGl19WBalhF5VG34mcCloITzv5Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:53:48.994841Z"},"content_sha256":"5a16abff18697c68682c93b52b4fb0d9971e1e94e13503a47439f61e38ea39fb","schema_version":"1.0","event_id":"sha256:5a16abff18697c68682c93b52b4fb0d9971e1e94e13503a47439f61e38ea39fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OB7KYMEZ4G63XLTVF7FMMSND2W/bundle.json","state_url":"https://pith.science/pith/OB7KYMEZ4G63XLTVF7FMMSND2W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OB7KYMEZ4G63XLTVF7FMMSND2W/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":"2026-05-26T11:53:48Z","links":{"resolver":"https://pith.science/pith/OB7KYMEZ4G63XLTVF7FMMSND2W","bundle":"https://pith.science/pith/OB7KYMEZ4G63XLTVF7FMMSND2W/bundle.json","state":"https://pith.science/pith/OB7KYMEZ4G63XLTVF7FMMSND2W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OB7KYMEZ4G63XLTVF7FMMSND2W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OB7KYMEZ4G63XLTVF7FMMSND2W","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":"77b50f14db321064bfc5309f5f39f689cb8474571e12c61c6fd26b78b64070eb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-05T14:06:00Z","title_canon_sha256":"56e783940bbc2d0e9e77ea41a4c842e1881cfd90e994b81d854216978801eb6a"},"schema_version":"1.0","source":{"id":"1206.0936","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.0936","created_at":"2026-05-18T03:31:43Z"},{"alias_kind":"arxiv_version","alias_value":"1206.0936v2","created_at":"2026-05-18T03:31:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.0936","created_at":"2026-05-18T03:31:43Z"},{"alias_kind":"pith_short_12","alias_value":"OB7KYMEZ4G63","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OB7KYMEZ4G63XLTV","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OB7KYMEZ","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:5a16abff18697c68682c93b52b4fb0d9971e1e94e13503a47439f61e38ea39fb","target":"graph","created_at":"2026-05-18T03:31:43Z","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 extend the security proof for continuous variable quantum key distribution protocols using post selection to account for arbitrary eavesdropping attacks by employing the concept of an equivalent protocol where the post-selection is implemented as a series of quantum operations including a virtual distillation. We introduce a particular `Gaussian' post selection and demonstrate that the security can be calculated using only experimentally accessible quantities. Finally we explicitly evaluate the performance for the case of a noisy Gaussian channel in the limit of unbounded key length and fin","authors_text":"Nathan Walk, Ping Koy Lam, Thomas Symul, Timothy C. Ralph","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-05T14:06:00Z","title":"Gaussian Post-selection for Continuous Variable Quantum Cryptography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.0936","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:c49fea3c52c51502b472bd21b4888216fd0f4e3c0bf1c0bd3004710e2299495a","target":"record","created_at":"2026-05-18T03:31:43Z","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":"77b50f14db321064bfc5309f5f39f689cb8474571e12c61c6fd26b78b64070eb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-05T14:06:00Z","title_canon_sha256":"56e783940bbc2d0e9e77ea41a4c842e1881cfd90e994b81d854216978801eb6a"},"schema_version":"1.0","source":{"id":"1206.0936","kind":"arxiv","version":2}},"canonical_sha256":"707eac3099e1bdbbae752fcac649a3d5889d9253f51a773deffeba5899ee99ed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"707eac3099e1bdbbae752fcac649a3d5889d9253f51a773deffeba5899ee99ed","first_computed_at":"2026-05-18T03:31:43.153038Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:31:43.153038Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vBvzMY7qDAllzpSSJQUZGl7vhRypuqorHA3J4rRzjQHaP9/ZvDExTOasnerugGCtcmO4Vx8eiXfrQJQJQAU9Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:31:43.153854Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.0936","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c49fea3c52c51502b472bd21b4888216fd0f4e3c0bf1c0bd3004710e2299495a","sha256:5a16abff18697c68682c93b52b4fb0d9971e1e94e13503a47439f61e38ea39fb"],"state_sha256":"dc13bea11ee75aa132266d464e0a5e39e41bb00131addb120133214455912acb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ik0MAYI7JMGEsmzacw36Vd4ReGFpcT1p9QUqDTmsF/K0OtQoApO//AaUmzjx4Q4NiamWX/DU/XANNj1umBSkAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:53:48.998174Z","bundle_sha256":"ee3aee1eb77578e88ba503607d2653afa187e206e9c9347989fada5fa5c5bb6b"}}