{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:P3Z6ZZHJL22ODDKD3EEAY3GJCV","short_pith_number":"pith:P3Z6ZZHJ","canonical_record":{"source":{"id":"1111.2744","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-11-11T14:00:36Z","cross_cats_sorted":[],"title_canon_sha256":"858239d82fc9c7be34c9c7e4e946f387b1e34e8d9f694448741df6ce1a9df5b5","abstract_canon_sha256":"86a9c00ab262c1ac235be5a75c47801c9cc72f159a0cd340a66eade75244234f"},"schema_version":"1.0"},"canonical_sha256":"7ef3ece4e95eb4e18d43d9080c6cc91545f6896a6dd6568be90b1899a7d90ddc","source":{"kind":"arxiv","id":"1111.2744","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.2744","created_at":"2026-05-18T04:08:25Z"},{"alias_kind":"arxiv_version","alias_value":"1111.2744v1","created_at":"2026-05-18T04:08:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.2744","created_at":"2026-05-18T04:08:25Z"},{"alias_kind":"pith_short_12","alias_value":"P3Z6ZZHJL22O","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"P3Z6ZZHJL22ODDKD","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"P3Z6ZZHJ","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:P3Z6ZZHJL22ODDKD3EEAY3GJCV","target":"record","payload":{"canonical_record":{"source":{"id":"1111.2744","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-11-11T14:00:36Z","cross_cats_sorted":[],"title_canon_sha256":"858239d82fc9c7be34c9c7e4e946f387b1e34e8d9f694448741df6ce1a9df5b5","abstract_canon_sha256":"86a9c00ab262c1ac235be5a75c47801c9cc72f159a0cd340a66eade75244234f"},"schema_version":"1.0"},"canonical_sha256":"7ef3ece4e95eb4e18d43d9080c6cc91545f6896a6dd6568be90b1899a7d90ddc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:25.179953Z","signature_b64":"XCD7JJV/ICo1OA88ZNRIY0TLEDty2w6WqK6klqf9gyQB+yk7NyLB/OMBhn0nK9dKPN71qXWRo1Qr5Qy1XN52BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ef3ece4e95eb4e18d43d9080c6cc91545f6896a6dd6568be90b1899a7d90ddc","last_reissued_at":"2026-05-18T04:08:25.179388Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:25.179388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.2744","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":"2026-05-18T04:08:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1h+YJLZ3kFCtZFDy0ELL1PaYyTqtsnimq2ug1/StdxOjrjCR0oXJlA3OOWF/2f6ZcmH64/oREmRgth7CGOL3Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:17:06.771213Z"},"content_sha256":"01863d6850ef2e79a4ea4dcce62f6e7fcee493fca68abbdb9e7ddd2a2d84ef29","schema_version":"1.0","event_id":"sha256:01863d6850ef2e79a4ea4dcce62f6e7fcee493fca68abbdb9e7ddd2a2d84ef29"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:P3Z6ZZHJL22ODDKD3EEAY3GJCV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cryptanalysis of Song's advanced smart card based password authentication protocol","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"John A. Clark, Juan E. Tapiador, Julio C. Hernandez-Castro, P. Peris-Lopez","submitted_at":"2011-11-11T14:00:36Z","abstract_excerpt":"Song \\cite{Song10} proposed very recently a password-based authentication and key establishment protocol using smart cards which attempts to solve some weaknesses found in a previous scheme suggested by Xu, Zhu, and Feng \\cite{XZF09}. In this paper, we present attacks on the improved protocol, showing that it fails to achieve the claimed security goals."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.2744","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":"2026-05-18T04:08:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jc82TyFvg1wjL7TI7ynPzA/pFiXu+5wmfL+GBDXGQE/nMi3+Fmp5Rjrz9f9ZfrJhR7XdInjUUmPzAyE2RO67DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:17:06.771888Z"},"content_sha256":"07e9e1fee63ed825c4ed2a1bacbd0950b1da8638b07974a44673ce86bbc65662","schema_version":"1.0","event_id":"sha256:07e9e1fee63ed825c4ed2a1bacbd0950b1da8638b07974a44673ce86bbc65662"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P3Z6ZZHJL22ODDKD3EEAY3GJCV/bundle.json","state_url":"https://pith.science/pith/P3Z6ZZHJL22ODDKD3EEAY3GJCV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P3Z6ZZHJL22ODDKD3EEAY3GJCV/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":"2026-05-26T19:17:06Z","links":{"resolver":"https://pith.science/pith/P3Z6ZZHJL22ODDKD3EEAY3GJCV","bundle":"https://pith.science/pith/P3Z6ZZHJL22ODDKD3EEAY3GJCV/bundle.json","state":"https://pith.science/pith/P3Z6ZZHJL22ODDKD3EEAY3GJCV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P3Z6ZZHJL22ODDKD3EEAY3GJCV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:P3Z6ZZHJL22ODDKD3EEAY3GJCV","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":"86a9c00ab262c1ac235be5a75c47801c9cc72f159a0cd340a66eade75244234f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-11-11T14:00:36Z","title_canon_sha256":"858239d82fc9c7be34c9c7e4e946f387b1e34e8d9f694448741df6ce1a9df5b5"},"schema_version":"1.0","source":{"id":"1111.2744","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.2744","created_at":"2026-05-18T04:08:25Z"},{"alias_kind":"arxiv_version","alias_value":"1111.2744v1","created_at":"2026-05-18T04:08:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.2744","created_at":"2026-05-18T04:08:25Z"},{"alias_kind":"pith_short_12","alias_value":"P3Z6ZZHJL22O","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"P3Z6ZZHJL22ODDKD","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"P3Z6ZZHJ","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:07e9e1fee63ed825c4ed2a1bacbd0950b1da8638b07974a44673ce86bbc65662","target":"graph","created_at":"2026-05-18T04:08:25Z","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":"Song \\cite{Song10} proposed very recently a password-based authentication and key establishment protocol using smart cards which attempts to solve some weaknesses found in a previous scheme suggested by Xu, Zhu, and Feng \\cite{XZF09}. In this paper, we present attacks on the improved protocol, showing that it fails to achieve the claimed security goals.","authors_text":"John A. Clark, Juan E. Tapiador, Julio C. Hernandez-Castro, P. Peris-Lopez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-11-11T14:00:36Z","title":"Cryptanalysis of Song's advanced smart card based password authentication protocol"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.2744","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":"sha256:01863d6850ef2e79a4ea4dcce62f6e7fcee493fca68abbdb9e7ddd2a2d84ef29","target":"record","created_at":"2026-05-18T04:08:25Z","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":"86a9c00ab262c1ac235be5a75c47801c9cc72f159a0cd340a66eade75244234f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-11-11T14:00:36Z","title_canon_sha256":"858239d82fc9c7be34c9c7e4e946f387b1e34e8d9f694448741df6ce1a9df5b5"},"schema_version":"1.0","source":{"id":"1111.2744","kind":"arxiv","version":1}},"canonical_sha256":"7ef3ece4e95eb4e18d43d9080c6cc91545f6896a6dd6568be90b1899a7d90ddc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ef3ece4e95eb4e18d43d9080c6cc91545f6896a6dd6568be90b1899a7d90ddc","first_computed_at":"2026-05-18T04:08:25.179388Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:25.179388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XCD7JJV/ICo1OA88ZNRIY0TLEDty2w6WqK6klqf9gyQB+yk7NyLB/OMBhn0nK9dKPN71qXWRo1Qr5Qy1XN52BA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:25.179953Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.2744","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01863d6850ef2e79a4ea4dcce62f6e7fcee493fca68abbdb9e7ddd2a2d84ef29","sha256:07e9e1fee63ed825c4ed2a1bacbd0950b1da8638b07974a44673ce86bbc65662"],"state_sha256":"8244f240d14a1d9b2d999815f1f36221ad35ddd981e9f649bee09bf558717350"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FPZ1lQ3MzWzrP6dJE+G0/uoELz/WENlEu3AFsDB/aVSNVPrPXSGoYn7v7dX0cls2RBmk0LEKdDc3sjCVF2mXBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T19:17:06.775245Z","bundle_sha256":"780e27a5d0e7a99c2420fb2c60805ce7480d251a49a7f8668c3cca400f426af5"}}