{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:S2ESO65W5LWVHODIXJKECTUUEI","short_pith_number":"pith:S2ESO65W","canonical_record":{"source":{"id":"1211.3553","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-11-15T10:04:33Z","cross_cats_sorted":[],"title_canon_sha256":"c58d2687fdc285024ab6ff0f5cb96dfde153bea5b09a6d5f68dec294a432ff79","abstract_canon_sha256":"4e7011509eac9683c773f24386e17721ebea44cdfd33c82dd56773f4783dd964"},"schema_version":"1.0"},"canonical_sha256":"9689277bb6eaed53b868ba54414e94222f7aebb0ecac3825c2f8ad88fbcb8ca4","source":{"kind":"arxiv","id":"1211.3553","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.3553","created_at":"2026-05-18T01:04:00Z"},{"alias_kind":"arxiv_version","alias_value":"1211.3553v2","created_at":"2026-05-18T01:04:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.3553","created_at":"2026-05-18T01:04:00Z"},{"alias_kind":"pith_short_12","alias_value":"S2ESO65W5LWV","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"S2ESO65W5LWVHODI","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"S2ESO65W","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:S2ESO65W5LWVHODIXJKECTUUEI","target":"record","payload":{"canonical_record":{"source":{"id":"1211.3553","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-11-15T10:04:33Z","cross_cats_sorted":[],"title_canon_sha256":"c58d2687fdc285024ab6ff0f5cb96dfde153bea5b09a6d5f68dec294a432ff79","abstract_canon_sha256":"4e7011509eac9683c773f24386e17721ebea44cdfd33c82dd56773f4783dd964"},"schema_version":"1.0"},"canonical_sha256":"9689277bb6eaed53b868ba54414e94222f7aebb0ecac3825c2f8ad88fbcb8ca4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:00.645513Z","signature_b64":"xmNMSFl9K9L2WurFIu/KuGkupY3YlK7ge2MwIWtgFuW/YIU+IXJoztiCB1qE0WF5I1xaHyNTmhjMuq2mYp8yBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9689277bb6eaed53b868ba54414e94222f7aebb0ecac3825c2f8ad88fbcb8ca4","last_reissued_at":"2026-05-18T01:04:00.644763Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:00.644763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.3553","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":"2026-05-18T01:04:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UI0oV+FDsL8LsheGhgFbUgnr7Z6hf8cgmIpYSgYe7pU09IQi5QUsajz8qcF1HUm0a3EYlNT8B4wN+pwxBgXNAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T19:52:55.884655Z"},"content_sha256":"28b31e6a6985ee3bc0b7fe8d3062154f98e6a3fa1e2f033811e19a0c46d01de3","schema_version":"1.0","event_id":"sha256:28b31e6a6985ee3bc0b7fe8d3062154f98e6a3fa1e2f033811e19a0c46d01de3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:S2ESO65W5LWVHODIXJKECTUUEI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Breaking a novel image encryption scheme based on improved hyperchaotic sequences","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Chengqing Li, Michael Z.Q. Chen, Tao Xie, Yuansheng Liu","submitted_at":"2012-11-15T10:04:33Z","abstract_excerpt":"Recently, a novel image encryption scheme based on improved hyperchaotic sequences was proposed. A pseudo-random number sequence, generated by a hyper-chaos system, is used to determine two involved encryption functions, bitwise exclusive or (XOR) operation and modulo addition. It was reported that the scheme can be broken with some pairs of chosen plain-images and the corresponding cipherimages. This paper re-evaluates the security of the encryption scheme and finds that the encryption scheme can be broken with only one known plain-image. The performance of the known-plaintext attack, in term"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.3553","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":""},"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":"2026-05-18T01:04:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P+S9G5e/PQM8HhouBMfHcdFV9vaGg8+5O8u7oBsBvLGymRtvubNewyatcnHuq0UbCOVZvQC7nu8v2zRVT6aeAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T19:52:55.885000Z"},"content_sha256":"56940f22ec4fc01a4f646b2c23e22e8cdda7b10c12e92483baa7f4d96d9122f3","schema_version":"1.0","event_id":"sha256:56940f22ec4fc01a4f646b2c23e22e8cdda7b10c12e92483baa7f4d96d9122f3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S2ESO65W5LWVHODIXJKECTUUEI/bundle.json","state_url":"https://pith.science/pith/S2ESO65W5LWVHODIXJKECTUUEI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S2ESO65W5LWVHODIXJKECTUUEI/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":"2026-05-29T19:52:55Z","links":{"resolver":"https://pith.science/pith/S2ESO65W5LWVHODIXJKECTUUEI","bundle":"https://pith.science/pith/S2ESO65W5LWVHODIXJKECTUUEI/bundle.json","state":"https://pith.science/pith/S2ESO65W5LWVHODIXJKECTUUEI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S2ESO65W5LWVHODIXJKECTUUEI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:S2ESO65W5LWVHODIXJKECTUUEI","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":"4e7011509eac9683c773f24386e17721ebea44cdfd33c82dd56773f4783dd964","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-11-15T10:04:33Z","title_canon_sha256":"c58d2687fdc285024ab6ff0f5cb96dfde153bea5b09a6d5f68dec294a432ff79"},"schema_version":"1.0","source":{"id":"1211.3553","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.3553","created_at":"2026-05-18T01:04:00Z"},{"alias_kind":"arxiv_version","alias_value":"1211.3553v2","created_at":"2026-05-18T01:04:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.3553","created_at":"2026-05-18T01:04:00Z"},{"alias_kind":"pith_short_12","alias_value":"S2ESO65W5LWV","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"S2ESO65W5LWVHODI","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"S2ESO65W","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:56940f22ec4fc01a4f646b2c23e22e8cdda7b10c12e92483baa7f4d96d9122f3","target":"graph","created_at":"2026-05-18T01:04:00Z","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, a novel image encryption scheme based on improved hyperchaotic sequences was proposed. A pseudo-random number sequence, generated by a hyper-chaos system, is used to determine two involved encryption functions, bitwise exclusive or (XOR) operation and modulo addition. It was reported that the scheme can be broken with some pairs of chosen plain-images and the corresponding cipherimages. This paper re-evaluates the security of the encryption scheme and finds that the encryption scheme can be broken with only one known plain-image. The performance of the known-plaintext attack, in term","authors_text":"Chengqing Li, Michael Z.Q. Chen, Tao Xie, Yuansheng Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-11-15T10:04:33Z","title":"Breaking a novel image encryption scheme based on improved hyperchaotic sequences"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.3553","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":"sha256:28b31e6a6985ee3bc0b7fe8d3062154f98e6a3fa1e2f033811e19a0c46d01de3","target":"record","created_at":"2026-05-18T01:04:00Z","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":"4e7011509eac9683c773f24386e17721ebea44cdfd33c82dd56773f4783dd964","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-11-15T10:04:33Z","title_canon_sha256":"c58d2687fdc285024ab6ff0f5cb96dfde153bea5b09a6d5f68dec294a432ff79"},"schema_version":"1.0","source":{"id":"1211.3553","kind":"arxiv","version":2}},"canonical_sha256":"9689277bb6eaed53b868ba54414e94222f7aebb0ecac3825c2f8ad88fbcb8ca4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9689277bb6eaed53b868ba54414e94222f7aebb0ecac3825c2f8ad88fbcb8ca4","first_computed_at":"2026-05-18T01:04:00.644763Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:00.644763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xmNMSFl9K9L2WurFIu/KuGkupY3YlK7ge2MwIWtgFuW/YIU+IXJoztiCB1qE0WF5I1xaHyNTmhjMuq2mYp8yBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:00.645513Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.3553","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28b31e6a6985ee3bc0b7fe8d3062154f98e6a3fa1e2f033811e19a0c46d01de3","sha256:56940f22ec4fc01a4f646b2c23e22e8cdda7b10c12e92483baa7f4d96d9122f3"],"state_sha256":"02c61987fb018861927cdce510ba78c5e2753101f3c7d33ec49545779726f125"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9apypLalVjlzlvFf93DXASZSH89fCjq4gO/YDDYGLiCgKrN+GOJUs+MK4q0r51/W9RA7Wd/n/Ykd5sGR3jcxAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T19:52:55.886963Z","bundle_sha256":"ecd03cb6e761f9a1c26149d6463199807070d4b32646581a1ada44168f2934ef"}}