{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:N35W6MUMTQHZUPFD4ZID2DCC6M","short_pith_number":"pith:N35W6MUM","canonical_record":{"source":{"id":"1103.3159","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-03-16T12:37:43Z","cross_cats_sorted":[],"title_canon_sha256":"e5ff9a04b52d8cb369ac0a7448c15def1794b15fd5d47725c08999eda0917a8b","abstract_canon_sha256":"8159ddd8a928ce8c8ff94f5a1da244584e32cedaa04f2e0b252cde2d1b869843"},"schema_version":"1.0"},"canonical_sha256":"6efb6f328c9c0f9a3ca3e6503d0c42f330b3f5d15b5e3222e20daace56dc6956","source":{"kind":"arxiv","id":"1103.3159","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.3159","created_at":"2026-05-18T04:26:44Z"},{"alias_kind":"arxiv_version","alias_value":"1103.3159v1","created_at":"2026-05-18T04:26:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.3159","created_at":"2026-05-18T04:26:44Z"},{"alias_kind":"pith_short_12","alias_value":"N35W6MUMTQHZ","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"N35W6MUMTQHZUPFD","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"N35W6MUM","created_at":"2026-05-18T12:26:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:N35W6MUMTQHZUPFD4ZID2DCC6M","target":"record","payload":{"canonical_record":{"source":{"id":"1103.3159","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-03-16T12:37:43Z","cross_cats_sorted":[],"title_canon_sha256":"e5ff9a04b52d8cb369ac0a7448c15def1794b15fd5d47725c08999eda0917a8b","abstract_canon_sha256":"8159ddd8a928ce8c8ff94f5a1da244584e32cedaa04f2e0b252cde2d1b869843"},"schema_version":"1.0"},"canonical_sha256":"6efb6f328c9c0f9a3ca3e6503d0c42f330b3f5d15b5e3222e20daace56dc6956","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:26:44.700387Z","signature_b64":"x+9FIATSadEY8fqJwrnquzJMqjQLCyzurEbR4LxSDkSc7cCWdEusWve1DPMUsCmNbq61jV7efCQ7snDcHgGYAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6efb6f328c9c0f9a3ca3e6503d0c42f330b3f5d15b5e3222e20daace56dc6956","last_reissued_at":"2026-05-18T04:26:44.699698Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:26:44.699698Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.3159","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":"2026-05-18T04:26:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Ww0CoD4Q5lwntxb8OS1386z0zY52kE8BCDP2lUPMnbqzuRoVG1/TRiPXBJI/t4q8hYbCn9GkKEwKWAra8+PCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:15:21.953397Z"},"content_sha256":"ff235d41808f433caa916652bddd001333a8f870787f1b0fe502666ffd876fd9","schema_version":"1.0","event_id":"sha256:ff235d41808f433caa916652bddd001333a8f870787f1b0fe502666ffd876fd9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:N35W6MUMTQHZUPFD4ZID2DCC6M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cryptanalysis And Further Improvement Of A Biometric-Based Remote User Authentication Scheme Using Smart Cards","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Ashok Kumar Das","submitted_at":"2011-03-16T12:37:43Z","abstract_excerpt":"Recently, Li et al. proposed a secure biometric-based remote user authentication scheme using smart cards to withstand the security flaws of Li-Hwang's efficient biometric-based remote user authentication scheme using smart cards. Li et al.'s scheme is based on biometrics verification, smart card and one-way hash function, and it also uses the random nonce rather than a synchronized clock, and thus it is efficient in computational cost and more secure than Li-Hwang's scheme. Unfortunately, in this paper we show that Li et al.'s scheme still has some security weaknesses in their design. In orde"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.3159","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":"2026-05-18T04:26:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IORhDGIUOK0Q09WAA4IfxsogbP8jhiPXaFSbFNctrgjMEAhvnABbqrMO09KWrKEabK/4zdUJlH/QmmRq3RjRDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:15:21.954106Z"},"content_sha256":"7d2f33afad37e8c0c59f21c587888cd66ab5368de256dd836271b74307ae7186","schema_version":"1.0","event_id":"sha256:7d2f33afad37e8c0c59f21c587888cd66ab5368de256dd836271b74307ae7186"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N35W6MUMTQHZUPFD4ZID2DCC6M/bundle.json","state_url":"https://pith.science/pith/N35W6MUMTQHZUPFD4ZID2DCC6M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N35W6MUMTQHZUPFD4ZID2DCC6M/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":"2026-06-09T06:15:21Z","links":{"resolver":"https://pith.science/pith/N35W6MUMTQHZUPFD4ZID2DCC6M","bundle":"https://pith.science/pith/N35W6MUMTQHZUPFD4ZID2DCC6M/bundle.json","state":"https://pith.science/pith/N35W6MUMTQHZUPFD4ZID2DCC6M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N35W6MUMTQHZUPFD4ZID2DCC6M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:N35W6MUMTQHZUPFD4ZID2DCC6M","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":"8159ddd8a928ce8c8ff94f5a1da244584e32cedaa04f2e0b252cde2d1b869843","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-03-16T12:37:43Z","title_canon_sha256":"e5ff9a04b52d8cb369ac0a7448c15def1794b15fd5d47725c08999eda0917a8b"},"schema_version":"1.0","source":{"id":"1103.3159","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.3159","created_at":"2026-05-18T04:26:44Z"},{"alias_kind":"arxiv_version","alias_value":"1103.3159v1","created_at":"2026-05-18T04:26:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.3159","created_at":"2026-05-18T04:26:44Z"},{"alias_kind":"pith_short_12","alias_value":"N35W6MUMTQHZ","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"N35W6MUMTQHZUPFD","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"N35W6MUM","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:7d2f33afad37e8c0c59f21c587888cd66ab5368de256dd836271b74307ae7186","target":"graph","created_at":"2026-05-18T04:26:44Z","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":"Recently, Li et al. proposed a secure biometric-based remote user authentication scheme using smart cards to withstand the security flaws of Li-Hwang's efficient biometric-based remote user authentication scheme using smart cards. Li et al.'s scheme is based on biometrics verification, smart card and one-way hash function, and it also uses the random nonce rather than a synchronized clock, and thus it is efficient in computational cost and more secure than Li-Hwang's scheme. Unfortunately, in this paper we show that Li et al.'s scheme still has some security weaknesses in their design. In orde","authors_text":"Ashok Kumar Das","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-03-16T12:37:43Z","title":"Cryptanalysis And Further Improvement Of A Biometric-Based Remote User Authentication Scheme Using Smart Cards"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.3159","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:ff235d41808f433caa916652bddd001333a8f870787f1b0fe502666ffd876fd9","target":"record","created_at":"2026-05-18T04:26:44Z","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":"8159ddd8a928ce8c8ff94f5a1da244584e32cedaa04f2e0b252cde2d1b869843","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-03-16T12:37:43Z","title_canon_sha256":"e5ff9a04b52d8cb369ac0a7448c15def1794b15fd5d47725c08999eda0917a8b"},"schema_version":"1.0","source":{"id":"1103.3159","kind":"arxiv","version":1}},"canonical_sha256":"6efb6f328c9c0f9a3ca3e6503d0c42f330b3f5d15b5e3222e20daace56dc6956","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6efb6f328c9c0f9a3ca3e6503d0c42f330b3f5d15b5e3222e20daace56dc6956","first_computed_at":"2026-05-18T04:26:44.699698Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:26:44.699698Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x+9FIATSadEY8fqJwrnquzJMqjQLCyzurEbR4LxSDkSc7cCWdEusWve1DPMUsCmNbq61jV7efCQ7snDcHgGYAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:26:44.700387Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.3159","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff235d41808f433caa916652bddd001333a8f870787f1b0fe502666ffd876fd9","sha256:7d2f33afad37e8c0c59f21c587888cd66ab5368de256dd836271b74307ae7186"],"state_sha256":"39093d3283c557d3bea857887fe99358b16d6b80dbdcc8a33c88c0d776708f65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gEtNIUQKNo637DdChkvbOZpSJhSRZ7EhR+1nNkoXzqdNvU13s3BwK5DMtp+EZUIaRJ9EaKHCBhZVInwGOZWNCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T06:15:21.957925Z","bundle_sha256":"8b95842c6879ebbe6f5b18c3188c355082ef79a3ed9e4efe3c0d404c0ba31e5b"}}