{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:IZDTBP6F4JT3VZTAVRH5YY3CHO","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":"677cdc7df3a9eaa0eaa282aba61691ab78479d9ceccc833f1f32fa479041e28c","cross_cats_sorted":["cs.CV","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-11-07T19:57:13Z","title_canon_sha256":"5dde626dd5844fe713f95841e65083faae7ef0c03a90c12211fa893a1d3cb6aa"},"schema_version":"1.0","source":{"id":"1211.1654","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.1654","created_at":"2026-05-18T03:41:20Z"},{"alias_kind":"arxiv_version","alias_value":"1211.1654v1","created_at":"2026-05-18T03:41:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.1654","created_at":"2026-05-18T03:41:20Z"},{"alias_kind":"pith_short_12","alias_value":"IZDTBP6F4JT3","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IZDTBP6F4JT3VZTA","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IZDTBP6F","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:fef19a6c40a94ff75078f4effbbef78cfbcf539779b9365e5d8dc0d97fc879b5","target":"graph","created_at":"2026-05-18T03:41:20Z","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 letter discusses the problem of testing the degree of randomness within an image, particularly for a shuffled or encrypted image. Its key contributions are: 1) a mathematical model of perfectly shuffled images; 2) the derivation of the theoretical distribution of pixel differences; 3) a new $Z$-test based approach to differentiate whether or not a test image is perfectly shuffled; and 4) a randomized algorithm to unbiasedly evaluate the degree of randomness within a given image. Simulation results show that the proposed method is robust and effective in evaluating the degree of randomness","authors_text":"Joseph P. Noonan, Sos Agaian, Yue Wu","cross_cats":["cs.CV","stat.AP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-11-07T19:57:13Z","title":"A New Randomness Evaluation Method with Applications to Image Shuffling and Encryption"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.1654","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":"sha256:67bb76d9343c8d7eb28980a09daed223a8f4c212e5bb288c83b90344f2b3bdd9","target":"record","created_at":"2026-05-18T03:41:20Z","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":"677cdc7df3a9eaa0eaa282aba61691ab78479d9ceccc833f1f32fa479041e28c","cross_cats_sorted":["cs.CV","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-11-07T19:57:13Z","title_canon_sha256":"5dde626dd5844fe713f95841e65083faae7ef0c03a90c12211fa893a1d3cb6aa"},"schema_version":"1.0","source":{"id":"1211.1654","kind":"arxiv","version":1}},"canonical_sha256":"464730bfc5e267bae660ac4fdc63623b807faafeb6faa04c34230425c321b661","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"464730bfc5e267bae660ac4fdc63623b807faafeb6faa04c34230425c321b661","first_computed_at":"2026-05-18T03:41:20.566173Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:41:20.566173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lxC54Femd9vYgIrb9Z9xLBhOnuThSZSJFMpeTSeFffjsiNZxa75CUyw458MkjWMy+Cj9NQHx+GdCl/IVrMNBAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:41:20.566606Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.1654","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67bb76d9343c8d7eb28980a09daed223a8f4c212e5bb288c83b90344f2b3bdd9","sha256:fef19a6c40a94ff75078f4effbbef78cfbcf539779b9365e5d8dc0d97fc879b5"],"state_sha256":"2bf22f5317a5d0632697d2ae34cecb0dead52eef420b608f35300bafc43d0cd9"}