{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:E6JWAN7FTJPELNG2CBPTCQPZTC","short_pith_number":"pith:E6JWAN7F","canonical_record":{"source":{"id":"1706.05604","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-18T04:42:05Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"3acab91e0e536e6651c6701d841b71dffa6cfd9493ed53ee7d93da6ec536356d","abstract_canon_sha256":"4e43309c450a7501b2df92805e9bdb902f74a8765bec87575d36bd6ff4c4d088"},"schema_version":"1.0"},"canonical_sha256":"27936037e59a5e45b4da105f3141f9988bd3b546b55762c2ad4f833c5955bafb","source":{"kind":"arxiv","id":"1706.05604","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.05604","created_at":"2026-05-18T00:42:09Z"},{"alias_kind":"arxiv_version","alias_value":"1706.05604v1","created_at":"2026-05-18T00:42:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.05604","created_at":"2026-05-18T00:42:09Z"},{"alias_kind":"pith_short_12","alias_value":"E6JWAN7FTJPE","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"E6JWAN7FTJPELNG2","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"E6JWAN7F","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:E6JWAN7FTJPELNG2CBPTCQPZTC","target":"record","payload":{"canonical_record":{"source":{"id":"1706.05604","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-18T04:42:05Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"3acab91e0e536e6651c6701d841b71dffa6cfd9493ed53ee7d93da6ec536356d","abstract_canon_sha256":"4e43309c450a7501b2df92805e9bdb902f74a8765bec87575d36bd6ff4c4d088"},"schema_version":"1.0"},"canonical_sha256":"27936037e59a5e45b4da105f3141f9988bd3b546b55762c2ad4f833c5955bafb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:09.415662Z","signature_b64":"xhGIFmse00Ke76w7zECE6eqkbIu8PUMvillYSdt/NBYfel6ggqsR100y6lWyq9tHiQTIB/P+6ivt78l11E3qBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27936037e59a5e45b4da105f3141f9988bd3b546b55762c2ad4f833c5955bafb","last_reissued_at":"2026-05-18T00:42:09.415128Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:09.415128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.05604","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":"2026-05-18T00:42:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9kPCWMrJLY52XxDvBrEncf6l49THaH+cgvWkoNXLwzytKxZLdkADLs1QX8tmD3wTVzctNRU53Sv6QcrCFEoPCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T20:29:18.856136Z"},"content_sha256":"145e299ef84ab33e2d3b003668a1cd4f0f95020853fe7540f8f4d61af11894e0","schema_version":"1.0","event_id":"sha256:145e299ef84ab33e2d3b003668a1cd4f0f95020853fe7540f8f4d61af11894e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:E6JWAN7FTJPELNG2CBPTCQPZTC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Secure and Private Cloud Storage Systems with Random Linear Fountain Codes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Hamid Sadjadpour, Mohsen Karimzadeh Kiskani","submitted_at":"2017-06-18T04:42:05Z","abstract_excerpt":"An information theoretic approach to security and privacy called Secure And Private Information Retrieval (SAPIR) is introduced. SAPIR is applied to distributed data storage systems. In this approach, random combinations of all contents are stored across the network. Our coding approach is based on Random Linear Fountain (RLF) codes. To retrieve a content, a group of servers collaborate with each other to form a Reconstruction Group (RG). SAPIR achieves asymptotic perfect secrecy if at least one of the servers within an RG is not compromised. Further, a Private Information Retrieval (PIR) sche"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.05604","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":"2026-05-18T00:42:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"so0dE4aZ71VOurMeysN/z2oooNN12btjo2NDbOnnmu32+2ypmZ8+L301NXt3woAWWFYjEz9ILdCNaZ+IauprDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T20:29:18.856880Z"},"content_sha256":"95763391f6b8eccac6329f05e8cf5bbc408550203edc867e80f644261ea28cfd","schema_version":"1.0","event_id":"sha256:95763391f6b8eccac6329f05e8cf5bbc408550203edc867e80f644261ea28cfd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E6JWAN7FTJPELNG2CBPTCQPZTC/bundle.json","state_url":"https://pith.science/pith/E6JWAN7FTJPELNG2CBPTCQPZTC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E6JWAN7FTJPELNG2CBPTCQPZTC/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":"2026-06-08T20:29:18Z","links":{"resolver":"https://pith.science/pith/E6JWAN7FTJPELNG2CBPTCQPZTC","bundle":"https://pith.science/pith/E6JWAN7FTJPELNG2CBPTCQPZTC/bundle.json","state":"https://pith.science/pith/E6JWAN7FTJPELNG2CBPTCQPZTC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E6JWAN7FTJPELNG2CBPTCQPZTC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:E6JWAN7FTJPELNG2CBPTCQPZTC","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":"4e43309c450a7501b2df92805e9bdb902f74a8765bec87575d36bd6ff4c4d088","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-18T04:42:05Z","title_canon_sha256":"3acab91e0e536e6651c6701d841b71dffa6cfd9493ed53ee7d93da6ec536356d"},"schema_version":"1.0","source":{"id":"1706.05604","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.05604","created_at":"2026-05-18T00:42:09Z"},{"alias_kind":"arxiv_version","alias_value":"1706.05604v1","created_at":"2026-05-18T00:42:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.05604","created_at":"2026-05-18T00:42:09Z"},{"alias_kind":"pith_short_12","alias_value":"E6JWAN7FTJPE","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"E6JWAN7FTJPELNG2","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"E6JWAN7F","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:95763391f6b8eccac6329f05e8cf5bbc408550203edc867e80f644261ea28cfd","target":"graph","created_at":"2026-05-18T00:42:09Z","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":"An information theoretic approach to security and privacy called Secure And Private Information Retrieval (SAPIR) is introduced. SAPIR is applied to distributed data storage systems. In this approach, random combinations of all contents are stored across the network. Our coding approach is based on Random Linear Fountain (RLF) codes. To retrieve a content, a group of servers collaborate with each other to form a Reconstruction Group (RG). SAPIR achieves asymptotic perfect secrecy if at least one of the servers within an RG is not compromised. Further, a Private Information Retrieval (PIR) sche","authors_text":"Hamid Sadjadpour, Mohsen Karimzadeh Kiskani","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-18T04:42:05Z","title":"Secure and Private Cloud Storage Systems with Random Linear Fountain Codes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.05604","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":"sha256:145e299ef84ab33e2d3b003668a1cd4f0f95020853fe7540f8f4d61af11894e0","target":"record","created_at":"2026-05-18T00:42:09Z","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":"4e43309c450a7501b2df92805e9bdb902f74a8765bec87575d36bd6ff4c4d088","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-18T04:42:05Z","title_canon_sha256":"3acab91e0e536e6651c6701d841b71dffa6cfd9493ed53ee7d93da6ec536356d"},"schema_version":"1.0","source":{"id":"1706.05604","kind":"arxiv","version":1}},"canonical_sha256":"27936037e59a5e45b4da105f3141f9988bd3b546b55762c2ad4f833c5955bafb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27936037e59a5e45b4da105f3141f9988bd3b546b55762c2ad4f833c5955bafb","first_computed_at":"2026-05-18T00:42:09.415128Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:09.415128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xhGIFmse00Ke76w7zECE6eqkbIu8PUMvillYSdt/NBYfel6ggqsR100y6lWyq9tHiQTIB/P+6ivt78l11E3qBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:09.415662Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.05604","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:145e299ef84ab33e2d3b003668a1cd4f0f95020853fe7540f8f4d61af11894e0","sha256:95763391f6b8eccac6329f05e8cf5bbc408550203edc867e80f644261ea28cfd"],"state_sha256":"41a900b97ee2779608035f1f0eaa4ea8fa6805142b6c40b8870f1a0efe36d471"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A7NP/U73RbmHs+rJTgw5q6zt+/ra+VAZb5GjGKYtooVyAxYu3wVLo4n0tLNnep615xtuNJzA68fRVjtf0VwSAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T20:29:18.860756Z","bundle_sha256":"ed12752b8b586143b4f0c3d465589be6191e8ef02938678d32bd28fa4a9feea5"}}