{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:L2ZU6QWGQ4A43VBSO2FDRXG67L","short_pith_number":"pith:L2ZU6QWG","canonical_record":{"source":{"id":"2603.22857","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2026-03-24T06:51:51Z","cross_cats_sorted":["cs.CR","cs.SY"],"title_canon_sha256":"c4550d37204f7168cdd06f76da61c8b07820a8d8da34e4ccbcee3ff3d7ce9f53","abstract_canon_sha256":"68931e5d96d0d4331ad847a13ff9a76e1332beeca1c1764bd5d29f845573e376"},"schema_version":"1.0"},"canonical_sha256":"5eb34f42c68701cdd432768a38dcdefadfa0e375fe7a26a0ca5277fdb95c9289","source":{"kind":"arxiv","id":"2603.22857","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.22857","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"arxiv_version","alias_value":"2603.22857v2","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.22857","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"pith_short_12","alias_value":"L2ZU6QWGQ4A4","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"pith_short_16","alias_value":"L2ZU6QWGQ4A43VBS","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"pith_short_8","alias_value":"L2ZU6QWG","created_at":"2026-06-02T02:04:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:L2ZU6QWGQ4A43VBSO2FDRXG67L","target":"record","payload":{"canonical_record":{"source":{"id":"2603.22857","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2026-03-24T06:51:51Z","cross_cats_sorted":["cs.CR","cs.SY"],"title_canon_sha256":"c4550d37204f7168cdd06f76da61c8b07820a8d8da34e4ccbcee3ff3d7ce9f53","abstract_canon_sha256":"68931e5d96d0d4331ad847a13ff9a76e1332beeca1c1764bd5d29f845573e376"},"schema_version":"1.0"},"canonical_sha256":"5eb34f42c68701cdd432768a38dcdefadfa0e375fe7a26a0ca5277fdb95c9289","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-02T02:04:52.529337Z","signature_b64":"a0tr+vjETIMPnTvz2FPjQ14fmDF19clXi6Xjb+A1SOWbyBCSb9XOcP6AehPFtEgk/gpNo7wKNW8VrOWGXhwSDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5eb34f42c68701cdd432768a38dcdefadfa0e375fe7a26a0ca5277fdb95c9289","last_reissued_at":"2026-06-02T02:04:52.528840Z","signature_status":"signed_v1","first_computed_at":"2026-06-02T02:04:52.528840Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2603.22857","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":"2026-06-02T02:04:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hXIeZgr2U1Ieym6nFKxx1dwKIMGZFUPhIQ9DDut+1zIJa/p24VVvy14mpZqsRdnSS+xbaxC72UQYlGUZJ8gYBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T04:57:45.775701Z"},"content_sha256":"f5253f048b3cc49674b6701ac9e14ebe15cdc699c3399c1c1f93d04d51ef17d1","schema_version":"1.0","event_id":"sha256:f5253f048b3cc49674b6701ac9e14ebe15cdc699c3399c1c1f93d04d51ef17d1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:L2ZU6QWGQ4A43VBSO2FDRXG67L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Secure Two-Party Matrix Multiplication from Lattices and Its Application to Encrypted Control","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CR","cs.SY"],"primary_cat":"eess.SY","authors_text":"Kaoru Teranishi","submitted_at":"2026-03-24T06:51:51Z","abstract_excerpt":"In this study, we propose a two-party computation protocol for approximate matrix multiplication of fixed-point numbers. The proposed protocol is provably secure under standard lattice-based cryptographic assumptions and enables matrix multiplication at a desired approximation level within a single round of communication. We demonstrate the feasibility of the protocol by applying it to the secure implementation of a linear control law. Our evaluation reveals that the client achieves lower online computational complexity compared to the original controller computation, while ensuring the privac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.22857","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2603.22857/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":"2026-06-02T02:04:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"++r6Lms82cU7NRFdjWIYi1pkZMxxL9wf++8q7OOxUnwIG6MVXiRUtiOiVPjBH8rJmg4REK9VnphJtLq3gP8MDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T04:57:45.776079Z"},"content_sha256":"b5d09182c53ea40c36bbe6573de245db82fd8e3ce67633a3e827b2d06172757f","schema_version":"1.0","event_id":"sha256:b5d09182c53ea40c36bbe6573de245db82fd8e3ce67633a3e827b2d06172757f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L2ZU6QWGQ4A43VBSO2FDRXG67L/bundle.json","state_url":"https://pith.science/pith/L2ZU6QWGQ4A43VBSO2FDRXG67L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L2ZU6QWGQ4A43VBSO2FDRXG67L/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":"2026-06-23T04:57:45Z","links":{"resolver":"https://pith.science/pith/L2ZU6QWGQ4A43VBSO2FDRXG67L","bundle":"https://pith.science/pith/L2ZU6QWGQ4A43VBSO2FDRXG67L/bundle.json","state":"https://pith.science/pith/L2ZU6QWGQ4A43VBSO2FDRXG67L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L2ZU6QWGQ4A43VBSO2FDRXG67L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:L2ZU6QWGQ4A43VBSO2FDRXG67L","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":"68931e5d96d0d4331ad847a13ff9a76e1332beeca1c1764bd5d29f845573e376","cross_cats_sorted":["cs.CR","cs.SY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2026-03-24T06:51:51Z","title_canon_sha256":"c4550d37204f7168cdd06f76da61c8b07820a8d8da34e4ccbcee3ff3d7ce9f53"},"schema_version":"1.0","source":{"id":"2603.22857","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.22857","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"arxiv_version","alias_value":"2603.22857v2","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.22857","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"pith_short_12","alias_value":"L2ZU6QWGQ4A4","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"pith_short_16","alias_value":"L2ZU6QWGQ4A43VBS","created_at":"2026-06-02T02:04:52Z"},{"alias_kind":"pith_short_8","alias_value":"L2ZU6QWG","created_at":"2026-06-02T02:04:52Z"}],"graph_snapshots":[{"event_id":"sha256:b5d09182c53ea40c36bbe6573de245db82fd8e3ce67633a3e827b2d06172757f","target":"graph","created_at":"2026-06-02T02:04:52Z","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/2603.22857/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this study, we propose a two-party computation protocol for approximate matrix multiplication of fixed-point numbers. The proposed protocol is provably secure under standard lattice-based cryptographic assumptions and enables matrix multiplication at a desired approximation level within a single round of communication. We demonstrate the feasibility of the protocol by applying it to the secure implementation of a linear control law. Our evaluation reveals that the client achieves lower online computational complexity compared to the original controller computation, while ensuring the privac","authors_text":"Kaoru Teranishi","cross_cats":["cs.CR","cs.SY"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2026-03-24T06:51:51Z","title":"Secure Two-Party Matrix Multiplication from Lattices and Its Application to Encrypted Control"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.22857","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:f5253f048b3cc49674b6701ac9e14ebe15cdc699c3399c1c1f93d04d51ef17d1","target":"record","created_at":"2026-06-02T02:04:52Z","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":"68931e5d96d0d4331ad847a13ff9a76e1332beeca1c1764bd5d29f845573e376","cross_cats_sorted":["cs.CR","cs.SY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2026-03-24T06:51:51Z","title_canon_sha256":"c4550d37204f7168cdd06f76da61c8b07820a8d8da34e4ccbcee3ff3d7ce9f53"},"schema_version":"1.0","source":{"id":"2603.22857","kind":"arxiv","version":2}},"canonical_sha256":"5eb34f42c68701cdd432768a38dcdefadfa0e375fe7a26a0ca5277fdb95c9289","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5eb34f42c68701cdd432768a38dcdefadfa0e375fe7a26a0ca5277fdb95c9289","first_computed_at":"2026-06-02T02:04:52.528840Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-02T02:04:52.528840Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a0tr+vjETIMPnTvz2FPjQ14fmDF19clXi6Xjb+A1SOWbyBCSb9XOcP6AehPFtEgk/gpNo7wKNW8VrOWGXhwSDA==","signature_status":"signed_v1","signed_at":"2026-06-02T02:04:52.529337Z","signed_message":"canonical_sha256_bytes"},"source_id":"2603.22857","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5253f048b3cc49674b6701ac9e14ebe15cdc699c3399c1c1f93d04d51ef17d1","sha256:b5d09182c53ea40c36bbe6573de245db82fd8e3ce67633a3e827b2d06172757f"],"state_sha256":"4b0ed7059ef7d262eaaca2d60506017aa1bd3702dc00fb8b36f1e675edd8b40c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jQN7jmADPOIgZwnc4yaZrm763cbUmeESCgKtb82cfnaHoSI71qh5SBYQSmxlkBymBtYDiRKWSoGJOIvKvKnUBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T04:57:45.778135Z","bundle_sha256":"f837f84b6b9ea49feb576d9afed594e59a9f7bc6dbe49f0667a2b6337a9d839b"}}