{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:ZY2W6IQBRTS2RGNLP5S26CAWMC","short_pith_number":"pith:ZY2W6IQB","canonical_record":{"source":{"id":"2002.10289","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2020-02-24T14:40:48Z","cross_cats_sorted":[],"title_canon_sha256":"1757a5442b1dfae213f1d085efcf61b28139bd620b273fc7e41655054158d86a","abstract_canon_sha256":"12746bdac639e467477e1772be535401fbf5032893e3d44fa32868ec838def6b"},"schema_version":"1.0"},"canonical_sha256":"ce356f22018ce5a899ab7f65af081660980d436e5fa8c4b337ea6c50961faced","source":{"kind":"arxiv","id":"2002.10289","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.10289","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"arxiv_version","alias_value":"2002.10289v2","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.10289","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"pith_short_12","alias_value":"ZY2W6IQBRTS2","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"pith_short_16","alias_value":"ZY2W6IQBRTS2RGNL","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"pith_short_8","alias_value":"ZY2W6IQB","created_at":"2026-07-05T02:48:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:ZY2W6IQBRTS2RGNLP5S26CAWMC","target":"record","payload":{"canonical_record":{"source":{"id":"2002.10289","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2020-02-24T14:40:48Z","cross_cats_sorted":[],"title_canon_sha256":"1757a5442b1dfae213f1d085efcf61b28139bd620b273fc7e41655054158d86a","abstract_canon_sha256":"12746bdac639e467477e1772be535401fbf5032893e3d44fa32868ec838def6b"},"schema_version":"1.0"},"canonical_sha256":"ce356f22018ce5a899ab7f65af081660980d436e5fa8c4b337ea6c50961faced","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:48:32.723988Z","signature_b64":"Nka5MFJqMqXRHKnwpjtRGdO1IsC6SrXtCVDUSwBRSUPzbChbp9/t7486NfpObvsB5k/rM246/iJCSbcC25LHDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce356f22018ce5a899ab7f65af081660980d436e5fa8c4b337ea6c50961faced","last_reissued_at":"2026-07-05T02:48:32.723547Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:48:32.723547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.10289","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":"2026-07-05T02:48:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GD1raIPk88C1cP/dvXpGekDd/6Fn/Q3ul15LhPc/h2/fwjVXcxh1fqM8pHhUscnayJxHxqclhID4BnIsuRDDCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:56:33.797573Z"},"content_sha256":"33f54105bfb7309c3912364450ae7ff3f4c822d46535b8440c82a8a3a518dc38","schema_version":"1.0","event_id":"sha256:33f54105bfb7309c3912364450ae7ff3f4c822d46535b8440c82a8a3a518dc38"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:ZY2W6IQBRTS2RGNLP5S26CAWMC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"EL PASSO: Privacy-preserving, Asynchronous Single Sign-On","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Alberto Sonnino, Etienne Rivi\\`ere, Lixia Zhang, Micha{\\l} Kr\\'ol, Zhiyi Zhang","submitted_at":"2020-02-24T14:40:48Z","abstract_excerpt":"We introduce EL PASSO, a privacy-preserving, asynchronous Single Sign-On (SSO) system. It enables personal authentication while protecting users' privacy against both identity providers and relying parties, and allows selective attribute disclosure. EL PASSO is based on anonymous credentials, yet it supports users' accountability. Selected authorities may recover the identity of allegedly misbehaving users, and users can prove properties about their identity without revealing it in the clear. EL PASSO does not require specific secure hardware or a third party (other than existing participants "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.10289","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2002.10289/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:48:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U7pgxnTALt3RMCW1wHmsdLGsStBs1eKwDKq+4PvElNVadEzP1nFIh9nAkYArwZH/JUrf7cOJXerOgpyEVlzSCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:56:33.797940Z"},"content_sha256":"ff1090e492ec12e6ea629769c744969fc83cb9bc70c50f9bb8556bb82daa2ed8","schema_version":"1.0","event_id":"sha256:ff1090e492ec12e6ea629769c744969fc83cb9bc70c50f9bb8556bb82daa2ed8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZY2W6IQBRTS2RGNLP5S26CAWMC/bundle.json","state_url":"https://pith.science/pith/ZY2W6IQBRTS2RGNLP5S26CAWMC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZY2W6IQBRTS2RGNLP5S26CAWMC/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":"2026-07-05T09:56:33Z","links":{"resolver":"https://pith.science/pith/ZY2W6IQBRTS2RGNLP5S26CAWMC","bundle":"https://pith.science/pith/ZY2W6IQBRTS2RGNLP5S26CAWMC/bundle.json","state":"https://pith.science/pith/ZY2W6IQBRTS2RGNLP5S26CAWMC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZY2W6IQBRTS2RGNLP5S26CAWMC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ZY2W6IQBRTS2RGNLP5S26CAWMC","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":"12746bdac639e467477e1772be535401fbf5032893e3d44fa32868ec838def6b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2020-02-24T14:40:48Z","title_canon_sha256":"1757a5442b1dfae213f1d085efcf61b28139bd620b273fc7e41655054158d86a"},"schema_version":"1.0","source":{"id":"2002.10289","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.10289","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"arxiv_version","alias_value":"2002.10289v2","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.10289","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"pith_short_12","alias_value":"ZY2W6IQBRTS2","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"pith_short_16","alias_value":"ZY2W6IQBRTS2RGNL","created_at":"2026-07-05T02:48:32Z"},{"alias_kind":"pith_short_8","alias_value":"ZY2W6IQB","created_at":"2026-07-05T02:48:32Z"}],"graph_snapshots":[{"event_id":"sha256:ff1090e492ec12e6ea629769c744969fc83cb9bc70c50f9bb8556bb82daa2ed8","target":"graph","created_at":"2026-07-05T02:48:32Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2002.10289/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce EL PASSO, a privacy-preserving, asynchronous Single Sign-On (SSO) system. It enables personal authentication while protecting users' privacy against both identity providers and relying parties, and allows selective attribute disclosure. EL PASSO is based on anonymous credentials, yet it supports users' accountability. Selected authorities may recover the identity of allegedly misbehaving users, and users can prove properties about their identity without revealing it in the clear. EL PASSO does not require specific secure hardware or a third party (other than existing participants ","authors_text":"Alberto Sonnino, Etienne Rivi\\`ere, Lixia Zhang, Micha{\\l} Kr\\'ol, Zhiyi Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2020-02-24T14:40:48Z","title":"EL PASSO: Privacy-preserving, Asynchronous Single Sign-On"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.10289","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":"sha256:33f54105bfb7309c3912364450ae7ff3f4c822d46535b8440c82a8a3a518dc38","target":"record","created_at":"2026-07-05T02:48:32Z","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":"12746bdac639e467477e1772be535401fbf5032893e3d44fa32868ec838def6b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2020-02-24T14:40:48Z","title_canon_sha256":"1757a5442b1dfae213f1d085efcf61b28139bd620b273fc7e41655054158d86a"},"schema_version":"1.0","source":{"id":"2002.10289","kind":"arxiv","version":2}},"canonical_sha256":"ce356f22018ce5a899ab7f65af081660980d436e5fa8c4b337ea6c50961faced","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce356f22018ce5a899ab7f65af081660980d436e5fa8c4b337ea6c50961faced","first_computed_at":"2026-07-05T02:48:32.723547Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:48:32.723547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Nka5MFJqMqXRHKnwpjtRGdO1IsC6SrXtCVDUSwBRSUPzbChbp9/t7486NfpObvsB5k/rM246/iJCSbcC25LHDw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:48:32.723988Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.10289","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33f54105bfb7309c3912364450ae7ff3f4c822d46535b8440c82a8a3a518dc38","sha256:ff1090e492ec12e6ea629769c744969fc83cb9bc70c50f9bb8556bb82daa2ed8"],"state_sha256":"05774c0a57564236de49ad1ce77907fe881d119238d8d4d6f139ca2e3696b15e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lTO5e80GmkwVpM/EFokLNtbhY62YKo5sit1gIjMlt+wwi8CvUYxW3tF8Q3JvYWQfGanrEaiQyC4JMob8zLsUBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T09:56:33.799952Z","bundle_sha256":"0a0ea92f526b77d4bc3f7cf1599c1a013d149a4bad6bedbc69ce4ab106531629"}}