{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:NODN3U32N66R5OBOLQIFQTTUOG","short_pith_number":"pith:NODN3U32","canonical_record":{"source":{"id":"2507.21068","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.CR","submitted_at":"2025-06-05T16:38:04Z","cross_cats_sorted":[],"title_canon_sha256":"4f89fd1126cae8c6df6b56f2e026bc0c22d1f9ebca45ba92874e3fc26d73edcc","abstract_canon_sha256":"3dc29f3b308591b3992241ee60899cb624c64f0af993a31b2386cef6cd0e8ea2"},"schema_version":"1.0"},"canonical_sha256":"6b86ddd37a6fbd1eb82e5c10584e7471b2ed24c043e34f0322928e313dd99bce","source":{"kind":"arxiv","id":"2507.21068","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.21068","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"arxiv_version","alias_value":"2507.21068v1","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.21068","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"pith_short_12","alias_value":"NODN3U32N66R","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"pith_short_16","alias_value":"NODN3U32N66R5OBO","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"pith_short_8","alias_value":"NODN3U32","created_at":"2026-07-05T11:44:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:NODN3U32N66R5OBOLQIFQTTUOG","target":"record","payload":{"canonical_record":{"source":{"id":"2507.21068","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.CR","submitted_at":"2025-06-05T16:38:04Z","cross_cats_sorted":[],"title_canon_sha256":"4f89fd1126cae8c6df6b56f2e026bc0c22d1f9ebca45ba92874e3fc26d73edcc","abstract_canon_sha256":"3dc29f3b308591b3992241ee60899cb624c64f0af993a31b2386cef6cd0e8ea2"},"schema_version":"1.0"},"canonical_sha256":"6b86ddd37a6fbd1eb82e5c10584e7471b2ed24c043e34f0322928e313dd99bce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:44:30.575878Z","signature_b64":"XzHlbWf9kH3PGHe6s5vsFraJdGVyTyINkRt46viuiKYaxiG80l86U5TqtjHOxvpxCJ0jpm4cYgi6wd9MVUi/Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6b86ddd37a6fbd1eb82e5c10584e7471b2ed24c043e34f0322928e313dd99bce","last_reissued_at":"2026-07-05T11:44:30.575453Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:44:30.575453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.21068","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":"2026-07-05T11:44:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ULWUF9WFOtqAlPfvLH5jk/1txZwLwqeKLQ3zMQEHBz33fUfIqcGXaU/IN8TMIqrxB48fPEJmtwyefeYJ8MgfCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T23:53:23.815433Z"},"content_sha256":"671c98115edc17a49f7ad996410fa4ec71333d93003f610f8e3877a3b744262d","schema_version":"1.0","event_id":"sha256:671c98115edc17a49f7ad996410fa4ec71333d93003f610f8e3877a3b744262d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:NODN3U32N66R5OBOLQIFQTTUOG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Private key and password protection by steganographic image encryption","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Debesh Choudhury, Sujoy Chakraborty","submitted_at":"2025-06-05T16:38:04Z","abstract_excerpt":"We propose a technique to protect and preserve a private key or a passcode in an encrypted two-dimensional graphical image. The plaintext private key or the passcode is converted into an encrypted QR code and embedded into a real-life color image with a steganographic scheme. The private key or the passcode is recovered from the stego color image by first extracting the encrypted QR code from the color image, followed by decryption of the QR code. The cryptographic key for encryption of the QR code is generated from the output of a Linear Feedback Shift Register (LFSR), initialized by a seed i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.21068","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.21068/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T11:44:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Gqc78MhQQrW83Z/SCXEq95rdMqsh+yzIOkRr0denmTN41GNe/8lYTadpOz78F1OlOUoK6+Mxwc30IdsNVbgAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T23:53:23.815923Z"},"content_sha256":"b57cfdbebc7b82c3499581d736fe6cd6a3c70e1256688cf9d82cee58ffb4c7ea","schema_version":"1.0","event_id":"sha256:b57cfdbebc7b82c3499581d736fe6cd6a3c70e1256688cf9d82cee58ffb4c7ea"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NODN3U32N66R5OBOLQIFQTTUOG/bundle.json","state_url":"https://pith.science/pith/NODN3U32N66R5OBOLQIFQTTUOG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NODN3U32N66R5OBOLQIFQTTUOG/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":"2026-08-07T23:53:23Z","links":{"resolver":"https://pith.science/pith/NODN3U32N66R5OBOLQIFQTTUOG","bundle":"https://pith.science/pith/NODN3U32N66R5OBOLQIFQTTUOG/bundle.json","state":"https://pith.science/pith/NODN3U32N66R5OBOLQIFQTTUOG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NODN3U32N66R5OBOLQIFQTTUOG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:NODN3U32N66R5OBOLQIFQTTUOG","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":"3dc29f3b308591b3992241ee60899cb624c64f0af993a31b2386cef6cd0e8ea2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.CR","submitted_at":"2025-06-05T16:38:04Z","title_canon_sha256":"4f89fd1126cae8c6df6b56f2e026bc0c22d1f9ebca45ba92874e3fc26d73edcc"},"schema_version":"1.0","source":{"id":"2507.21068","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.21068","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"arxiv_version","alias_value":"2507.21068v1","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.21068","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"pith_short_12","alias_value":"NODN3U32N66R","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"pith_short_16","alias_value":"NODN3U32N66R5OBO","created_at":"2026-07-05T11:44:30Z"},{"alias_kind":"pith_short_8","alias_value":"NODN3U32","created_at":"2026-07-05T11:44:30Z"}],"graph_snapshots":[{"event_id":"sha256:b57cfdbebc7b82c3499581d736fe6cd6a3c70e1256688cf9d82cee58ffb4c7ea","target":"graph","created_at":"2026-07-05T11:44:30Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2507.21068/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a technique to protect and preserve a private key or a passcode in an encrypted two-dimensional graphical image. The plaintext private key or the passcode is converted into an encrypted QR code and embedded into a real-life color image with a steganographic scheme. The private key or the passcode is recovered from the stego color image by first extracting the encrypted QR code from the color image, followed by decryption of the QR code. The cryptographic key for encryption of the QR code is generated from the output of a Linear Feedback Shift Register (LFSR), initialized by a seed i","authors_text":"Debesh Choudhury, Sujoy Chakraborty","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.CR","submitted_at":"2025-06-05T16:38:04Z","title":"Private key and password protection by steganographic image encryption"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.21068","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":"sha256:671c98115edc17a49f7ad996410fa4ec71333d93003f610f8e3877a3b744262d","target":"record","created_at":"2026-07-05T11:44:30Z","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":"3dc29f3b308591b3992241ee60899cb624c64f0af993a31b2386cef6cd0e8ea2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.CR","submitted_at":"2025-06-05T16:38:04Z","title_canon_sha256":"4f89fd1126cae8c6df6b56f2e026bc0c22d1f9ebca45ba92874e3fc26d73edcc"},"schema_version":"1.0","source":{"id":"2507.21068","kind":"arxiv","version":1}},"canonical_sha256":"6b86ddd37a6fbd1eb82e5c10584e7471b2ed24c043e34f0322928e313dd99bce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6b86ddd37a6fbd1eb82e5c10584e7471b2ed24c043e34f0322928e313dd99bce","first_computed_at":"2026-07-05T11:44:30.575453Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:44:30.575453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XzHlbWf9kH3PGHe6s5vsFraJdGVyTyINkRt46viuiKYaxiG80l86U5TqtjHOxvpxCJ0jpm4cYgi6wd9MVUi/Cg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:44:30.575878Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.21068","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:671c98115edc17a49f7ad996410fa4ec71333d93003f610f8e3877a3b744262d","sha256:b57cfdbebc7b82c3499581d736fe6cd6a3c70e1256688cf9d82cee58ffb4c7ea"],"state_sha256":"2a2961259a531d954ba592dd15434b7d5f6436d76f47521272849ab65f9bebf7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TM54Kgzs0OeJrdY05vQRoucfWe8kJK3rJp6XNSMgWqw7XyKWn4OoZ7qpl5x1bJfujl6pAqK/DpP7Iho2vKfCAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T23:53:23.821193Z","bundle_sha256":"69742b46b34a683228dbb181c14b179e32770bad39e79b2c44296749efc8c81d"}}