{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:4DSKKLN2AJ53HSTO3KOZ6K3KFV","short_pith_number":"pith:4DSKKLN2","canonical_record":{"source":{"id":"1112.1260","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-12-06T12:59:33Z","cross_cats_sorted":[],"title_canon_sha256":"f8298a6b8f9bf57fd8191f5a49569f2bb659faeefb3a878d9d069e83b1bde98b","abstract_canon_sha256":"4c578d5ad67fd21df08f085a3c2205841a1fa4d9d31eac2fde42515d06148dd5"},"schema_version":"1.0"},"canonical_sha256":"e0e4a52dba027bb3ca6eda9d9f2b6a2d6127d761ce435661fc665cdc8d900e9a","source":{"kind":"arxiv","id":"1112.1260","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.1260","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"arxiv_version","alias_value":"1112.1260v1","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.1260","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"pith_short_12","alias_value":"4DSKKLN2AJ53","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4DSKKLN2AJ53HSTO","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4DSKKLN2","created_at":"2026-05-18T12:26:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:4DSKKLN2AJ53HSTO3KOZ6K3KFV","target":"record","payload":{"canonical_record":{"source":{"id":"1112.1260","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-12-06T12:59:33Z","cross_cats_sorted":[],"title_canon_sha256":"f8298a6b8f9bf57fd8191f5a49569f2bb659faeefb3a878d9d069e83b1bde98b","abstract_canon_sha256":"4c578d5ad67fd21df08f085a3c2205841a1fa4d9d31eac2fde42515d06148dd5"},"schema_version":"1.0"},"canonical_sha256":"e0e4a52dba027bb3ca6eda9d9f2b6a2d6127d761ce435661fc665cdc8d900e9a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:21:27.845203Z","signature_b64":"5qSFgcB7Xjb4al5HScxZmJjYWBArNMU0PCBwikhVx2wsdAJo1lib9T3u9vog8u33QYKYCZtG5kaqmSCZvMb7Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e0e4a52dba027bb3ca6eda9d9f2b6a2d6127d761ce435661fc665cdc8d900e9a","last_reissued_at":"2026-05-18T02:21:27.844473Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:21:27.844473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.1260","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":"2026-05-18T02:21:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R0I7oxJ8lQvYleBu+p5i+NRx7UTIrmATewRXvklY/mGIlEDBbORvoD1XjNb6vWGTFTJLukiS5406W819OV+gBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T22:59:13.678542Z"},"content_sha256":"baa4591752e26841cba5816c0b06529e74e87cf8b582469d78668ca6db780982","schema_version":"1.0","event_id":"sha256:baa4591752e26841cba5816c0b06529e74e87cf8b582469d78668ca6db780982"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:4DSKKLN2AJ53HSTO3KOZ6K3KFV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Steganography: a class of secure and robust algorithms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Christophe Guyeux, Jacques M. Bahi, Jean-Fran\\c{c}ois Couchot","submitted_at":"2011-12-06T12:59:33Z","abstract_excerpt":"This research work presents a new class of non-blind information hiding algorithms that are stego-secure and robust. They are based on some finite domains iterations having the Devaney's topological chaos property. Thanks to a complete formalization of the approach we prove security against watermark-only attacks of a large class of steganographic algorithms. Finally a complete study of robustness is given in frequency DWT and DCT domains."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.1260","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":"2026-05-18T02:21:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"njMx5KoiWu8ZszLweZEQRiCmqWZbtvNNmalsnAwyb/0gPYSBq7K+ChL9FDwmtf/LoXJ7XaI/2xHHmPOVXNFqCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T22:59:13.678878Z"},"content_sha256":"6f7d9a66edc282c4f68c17c168b1f276e51d2d610b4769a3e9d2e0b4a8ac2433","schema_version":"1.0","event_id":"sha256:6f7d9a66edc282c4f68c17c168b1f276e51d2d610b4769a3e9d2e0b4a8ac2433"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4DSKKLN2AJ53HSTO3KOZ6K3KFV/bundle.json","state_url":"https://pith.science/pith/4DSKKLN2AJ53HSTO3KOZ6K3KFV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4DSKKLN2AJ53HSTO3KOZ6K3KFV/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":"2026-06-24T22:59:13Z","links":{"resolver":"https://pith.science/pith/4DSKKLN2AJ53HSTO3KOZ6K3KFV","bundle":"https://pith.science/pith/4DSKKLN2AJ53HSTO3KOZ6K3KFV/bundle.json","state":"https://pith.science/pith/4DSKKLN2AJ53HSTO3KOZ6K3KFV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4DSKKLN2AJ53HSTO3KOZ6K3KFV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:4DSKKLN2AJ53HSTO3KOZ6K3KFV","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":"4c578d5ad67fd21df08f085a3c2205841a1fa4d9d31eac2fde42515d06148dd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-12-06T12:59:33Z","title_canon_sha256":"f8298a6b8f9bf57fd8191f5a49569f2bb659faeefb3a878d9d069e83b1bde98b"},"schema_version":"1.0","source":{"id":"1112.1260","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.1260","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"arxiv_version","alias_value":"1112.1260v1","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.1260","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"pith_short_12","alias_value":"4DSKKLN2AJ53","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4DSKKLN2AJ53HSTO","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4DSKKLN2","created_at":"2026-05-18T12:26:20Z"}],"graph_snapshots":[{"event_id":"sha256:6f7d9a66edc282c4f68c17c168b1f276e51d2d610b4769a3e9d2e0b4a8ac2433","target":"graph","created_at":"2026-05-18T02:21:27Z","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":"This research work presents a new class of non-blind information hiding algorithms that are stego-secure and robust. They are based on some finite domains iterations having the Devaney's topological chaos property. Thanks to a complete formalization of the approach we prove security against watermark-only attacks of a large class of steganographic algorithms. Finally a complete study of robustness is given in frequency DWT and DCT domains.","authors_text":"Christophe Guyeux, Jacques M. Bahi, Jean-Fran\\c{c}ois Couchot","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-12-06T12:59:33Z","title":"Steganography: a class of secure and robust algorithms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.1260","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:baa4591752e26841cba5816c0b06529e74e87cf8b582469d78668ca6db780982","target":"record","created_at":"2026-05-18T02:21:27Z","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":"4c578d5ad67fd21df08f085a3c2205841a1fa4d9d31eac2fde42515d06148dd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2011-12-06T12:59:33Z","title_canon_sha256":"f8298a6b8f9bf57fd8191f5a49569f2bb659faeefb3a878d9d069e83b1bde98b"},"schema_version":"1.0","source":{"id":"1112.1260","kind":"arxiv","version":1}},"canonical_sha256":"e0e4a52dba027bb3ca6eda9d9f2b6a2d6127d761ce435661fc665cdc8d900e9a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e0e4a52dba027bb3ca6eda9d9f2b6a2d6127d761ce435661fc665cdc8d900e9a","first_computed_at":"2026-05-18T02:21:27.844473Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:21:27.844473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5qSFgcB7Xjb4al5HScxZmJjYWBArNMU0PCBwikhVx2wsdAJo1lib9T3u9vog8u33QYKYCZtG5kaqmSCZvMb7Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:21:27.845203Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.1260","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:baa4591752e26841cba5816c0b06529e74e87cf8b582469d78668ca6db780982","sha256:6f7d9a66edc282c4f68c17c168b1f276e51d2d610b4769a3e9d2e0b4a8ac2433"],"state_sha256":"d29d181f2441fb38bcb6fc8a4e313a3060f7edfa065f88e6975b230de8d5c1a2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PEn7W88nziSMQWlmEpaa6grw88znpUThk1/2Zb/KMdPMSJ7Gxj6v1dYbkxdSedFEsHAMzqSrWfckx4s1huiKAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T22:59:13.680779Z","bundle_sha256":"8235b214ff8a601577e631755de3b26a5770b927ddedb3b87d9b23e45e4327b5"}}