{"id":29625484,"url":"https://github.com/namada-net/shielded-state-sync","last_synced_at":"2026-03-13T01:34:23.211Z","repository":{"id":272934348,"uuid":"910388099","full_name":"namada-net/shielded-state-sync","owner":"namada-net","description":"Synchronize shielded messages using fuzzy message detection (FMD).","archived":false,"fork":false,"pushed_at":"2025-11-13T06:37:06.000Z","size":402,"stargazers_count":5,"open_issues_count":6,"forks_count":0,"subscribers_count":11,"default_branch":"main","last_synced_at":"2026-01-14T11:37:03.158Z","etag":null,"topics":["crypto","flagging","fmd","fuzzy-matching","fuzzy-message-detection","rust"],"latest_commit_sha":null,"homepage":"","language":"Rust","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/namada-net.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2024-12-31T06:24:06.000Z","updated_at":"2025-12-10T15:42:57.000Z","dependencies_parsed_at":"2025-11-13T09:02:27.114Z","dependency_job_id":null,"html_url":"https://github.com/namada-net/shielded-state-sync","commit_stats":null,"previous_names":["anoma/shielded-state-sync","namada-net/shielded-state-sync"],"tags_count":5,"template":false,"template_full_name":null,"purl":"pkg:github/namada-net/shielded-state-sync","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/namada-net%2Fshielded-state-sync","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/namada-net%2Fshielded-state-sync/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/namada-net%2Fshielded-state-sync/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/namada-net%2Fshielded-state-sync/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/namada-net","download_url":"https://codeload.github.com/namada-net/shielded-state-sync/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/namada-net%2Fshielded-state-sync/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":30453802,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-03-12T21:31:01.033Z","status":"ssl_error","status_checked_at":"2026-03-12T21:30:43.161Z","response_time":114,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["crypto","flagging","fmd","fuzzy-matching","fuzzy-message-detection","rust"],"created_at":"2025-07-21T06:37:04.398Z","updated_at":"2026-03-13T01:34:23.164Z","avatar_url":"https://github.com/namada-net.png","language":"Rust","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Shielded State Sync\nSynchronize shielded messages using [fuzzy message detection](https://eprint.iacr.org/2021/089) (FMD).\n\n## Multi-key extraction\nThis crate supports multi-key extraction by thresholdizing the original FMD2 scheme. Refer to the [ART report](https://zenodo.org/records/15186457) for details.\n\nKnowing up to `t \u003c d` detection keys leaks no information about the other `d-t` keys. Here `t` is a corruption threshold parameter passed to the multi-key extraction.\n\nFor each pair `(d,t)`, there is an associated set `P(d,t)` of valid leaked and filtering rates `(p_l,p_f)`.\n\n* `p_l:=2^{-n}` and `n` is the number of (different) secret subkeys across any `t` detection keys, \n* `p_f:=2^{-δ}`and `δ` is the total number of secret subkeys in the `d` detection keys.\n\nThus, the leaked rate is the false-positive rate at which any coalition of `t` servers can filter. The filtering rate is the false-positive rate at which the receiver can filter, after receiving all the filters from the `d` servers.\n\n## Key expansion and key randomization\nTwo implementations are provided. The compact scheme generates short FMD public keys, which can be randomized. \n* Compact public keys can be _publicly_ expanded into FMD public keys. This means that only compact keys need to be made public by key owners (receivers), saving bandwidth and storage.\n* Randomized public keys share the same set of detection keys. Can be seen as Sybil identities for the same receiver.\n\n## Serialization\nFeature `serde` enables serialization/deserialization of public keys, secret keys, detection keys, and flag ciphertexts.\n\n## Benchmarks\nRun `make bench`.\n\n## Examples\nSee the examples' folder.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnamada-net%2Fshielded-state-sync","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fnamada-net%2Fshielded-state-sync","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnamada-net%2Fshielded-state-sync/lists"}