{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:VGUQF3UYCVT3LJY4FPFG6HT5FL","short_pith_number":"pith:VGUQF3UY","canonical_record":{"source":{"id":"1502.04544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-02-16T14:19:53Z","cross_cats_sorted":[],"title_canon_sha256":"7fe51cf2c089ece0f0f21b8b9d70bb7387436fcfaf2904fe8986e8876b2b76ae","abstract_canon_sha256":"8e5d011cee6f554f97f7bf1e50b34c5387ff506fb5b87520e21e6703bf7276f3"},"schema_version":"1.0"},"canonical_sha256":"a9a902ee981567b5a71c2bca6f1e7d2ad4ca5f926ed640000c4cb915db76bd5d","source":{"kind":"arxiv","id":"1502.04544","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04544","created_at":"2026-05-18T02:26:59Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04544v1","created_at":"2026-05-18T02:26:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04544","created_at":"2026-05-18T02:26:59Z"},{"alias_kind":"pith_short_12","alias_value":"VGUQF3UYCVT3","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VGUQF3UYCVT3LJY4","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VGUQF3UY","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:VGUQF3UYCVT3LJY4FPFG6HT5FL","target":"record","payload":{"canonical_record":{"source":{"id":"1502.04544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-02-16T14:19:53Z","cross_cats_sorted":[],"title_canon_sha256":"7fe51cf2c089ece0f0f21b8b9d70bb7387436fcfaf2904fe8986e8876b2b76ae","abstract_canon_sha256":"8e5d011cee6f554f97f7bf1e50b34c5387ff506fb5b87520e21e6703bf7276f3"},"schema_version":"1.0"},"canonical_sha256":"a9a902ee981567b5a71c2bca6f1e7d2ad4ca5f926ed640000c4cb915db76bd5d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:26:59.575494Z","signature_b64":"pGN+L459AMAeqR8luI4ZKF/IjH8LYNb5TV58pid3havZMDwp3QymFWNGeX7rpcSp4iIxmBwJ5Uoe9jtY0dxVCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a9a902ee981567b5a71c2bca6f1e7d2ad4ca5f926ed640000c4cb915db76bd5d","last_reissued_at":"2026-05-18T02:26:59.575145Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:26:59.575145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.04544","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:26:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cX45sjOpvDdXbGaX+RGBRQwK+hAlZAxaqvAQYLBMQwaJ8SlTwJEC/LzG4qKffMjy7QHC4DoYCx0zgVcAFMNkCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:57:08.296528Z"},"content_sha256":"eebda65b43efa3339c82bf560b8216ab672f5591c20891e4a91152b246d53475","schema_version":"1.0","event_id":"sha256:eebda65b43efa3339c82bf560b8216ab672f5591c20891e4a91152b246d53475"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:VGUQF3UYCVT3LJY4FPFG6HT5FL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Note On Boneh-Gentry-Waters Broadcast Encryption Scheme and Its Like","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Lihua Liu, Zhengjun Cao","submitted_at":"2015-02-16T14:19:53Z","abstract_excerpt":"Key establishment is any process whereby a shared secret key becomes available to two or more parties, for subsequent cryptographic use such as symmetric-key encryption. Though it is widely known that the primitive of encryption is different from key establishment, we find some researchers have confused the two primitives. In this note, we shall clarify the fundamental difference between the two primitives, and point out that the Boneh-Gentry-Waters broadcast encryption scheme and its like are key establishment schemes, not encryption schemes."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04544","kind":"arxiv","version":1},"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":"2026-05-18T02:26:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I5tHCq45bsZx8LkbCKAhYzcZvyzJGWXew4lw1jVrQRrfPfw2QqZnVW6gvr3IvrvzA/tPCARvA+NT7kvRj07oDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:57:08.296936Z"},"content_sha256":"33954fc7b59b76a5f8a2e8d8762d55edd0273565942bafe52ad4c337dbeb056d","schema_version":"1.0","event_id":"sha256:33954fc7b59b76a5f8a2e8d8762d55edd0273565942bafe52ad4c337dbeb056d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VGUQF3UYCVT3LJY4FPFG6HT5FL/bundle.json","state_url":"https://pith.science/pith/VGUQF3UYCVT3LJY4FPFG6HT5FL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VGUQF3UYCVT3LJY4FPFG6HT5FL/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":"2026-06-02T22:57:08Z","links":{"resolver":"https://pith.science/pith/VGUQF3UYCVT3LJY4FPFG6HT5FL","bundle":"https://pith.science/pith/VGUQF3UYCVT3LJY4FPFG6HT5FL/bundle.json","state":"https://pith.science/pith/VGUQF3UYCVT3LJY4FPFG6HT5FL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VGUQF3UYCVT3LJY4FPFG6HT5FL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:VGUQF3UYCVT3LJY4FPFG6HT5FL","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":"8e5d011cee6f554f97f7bf1e50b34c5387ff506fb5b87520e21e6703bf7276f3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-02-16T14:19:53Z","title_canon_sha256":"7fe51cf2c089ece0f0f21b8b9d70bb7387436fcfaf2904fe8986e8876b2b76ae"},"schema_version":"1.0","source":{"id":"1502.04544","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04544","created_at":"2026-05-18T02:26:59Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04544v1","created_at":"2026-05-18T02:26:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04544","created_at":"2026-05-18T02:26:59Z"},{"alias_kind":"pith_short_12","alias_value":"VGUQF3UYCVT3","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VGUQF3UYCVT3LJY4","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VGUQF3UY","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:33954fc7b59b76a5f8a2e8d8762d55edd0273565942bafe52ad4c337dbeb056d","target":"graph","created_at":"2026-05-18T02:26:59Z","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":"Key establishment is any process whereby a shared secret key becomes available to two or more parties, for subsequent cryptographic use such as symmetric-key encryption. Though it is widely known that the primitive of encryption is different from key establishment, we find some researchers have confused the two primitives. In this note, we shall clarify the fundamental difference between the two primitives, and point out that the Boneh-Gentry-Waters broadcast encryption scheme and its like are key establishment schemes, not encryption schemes.","authors_text":"Lihua Liu, Zhengjun Cao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-02-16T14:19:53Z","title":"A Note On Boneh-Gentry-Waters Broadcast Encryption Scheme and Its Like"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04544","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:eebda65b43efa3339c82bf560b8216ab672f5591c20891e4a91152b246d53475","target":"record","created_at":"2026-05-18T02:26:59Z","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":"8e5d011cee6f554f97f7bf1e50b34c5387ff506fb5b87520e21e6703bf7276f3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-02-16T14:19:53Z","title_canon_sha256":"7fe51cf2c089ece0f0f21b8b9d70bb7387436fcfaf2904fe8986e8876b2b76ae"},"schema_version":"1.0","source":{"id":"1502.04544","kind":"arxiv","version":1}},"canonical_sha256":"a9a902ee981567b5a71c2bca6f1e7d2ad4ca5f926ed640000c4cb915db76bd5d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a9a902ee981567b5a71c2bca6f1e7d2ad4ca5f926ed640000c4cb915db76bd5d","first_computed_at":"2026-05-18T02:26:59.575145Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:26:59.575145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pGN+L459AMAeqR8luI4ZKF/IjH8LYNb5TV58pid3havZMDwp3QymFWNGeX7rpcSp4iIxmBwJ5Uoe9jtY0dxVCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:26:59.575494Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.04544","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eebda65b43efa3339c82bf560b8216ab672f5591c20891e4a91152b246d53475","sha256:33954fc7b59b76a5f8a2e8d8762d55edd0273565942bafe52ad4c337dbeb056d"],"state_sha256":"bb0b713a196154f9c9fb6e8dc15c994f4ec1592d696339cf943f1435da39bb95"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FrOmsCiM6XokxcQlwHqABiR1a1FA+hcZaSeg1cbJngYWlonVB1dXRfSrHCOZuphtNJEpwsYIA+9TFIu5JR38Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:57:08.298911Z","bundle_sha256":"efe4c98ebf4e2a5c7ec760579ee5720b13b778f2c8d311b7c81e8c4dd30a4ffe"}}