{"id":18616978,"url":"https://github.com/cowlicks/partially","last_synced_at":"2025-04-11T02:30:26.612Z","repository":{"id":146051627,"uuid":"79761591","full_name":"cowlicks/partially","owner":"cowlicks","description":"Implementation of the paper \"Provably Secure Partially Blind Signatures\" by Masayuki ABE and Tatsuaki OKAMOTO.","archived":false,"fork":false,"pushed_at":"2017-01-23T02:25:57.000Z","size":15,"stargazers_count":11,"open_issues_count":0,"forks_count":1,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-03-25T07:13:02.842Z","etag":null,"topics":["blind-signatures","cryptography"],"latest_commit_sha":null,"homepage":null,"language":"Python","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/cowlicks.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}},"created_at":"2017-01-23T02:11:11.000Z","updated_at":"2024-05-28T16:50:39.000Z","dependencies_parsed_at":null,"dependency_job_id":"0577fac4-acae-4420-8646-3d4d5fcb1bc9","html_url":"https://github.com/cowlicks/partially","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/cowlicks%2Fpartially","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/cowlicks%2Fpartially/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/cowlicks%2Fpartially/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/cowlicks%2Fpartially/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/cowlicks","download_url":"https://codeload.github.com/cowlicks/partially/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":248329487,"owners_count":21085541,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","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":["blind-signatures","cryptography"],"created_at":"2024-11-07T03:38:35.192Z","updated_at":"2025-04-11T02:30:26.603Z","avatar_url":"https://github.com/cowlicks.png","language":"Python","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Provably Secure Partially Blind Signatures\n\nThis is an implementation of the partially blind signature issuing protocol from the paper \"Provably Secure Partially Blind Signatures\" by Masayuki ABE and Tatsuaki OKAMOTO.\n\nHere is a demo of the current usage.\n```python\n\nL, N = 1024, 160\n# Unblinded info the signer and user both agree on out of channel.\ninfo = b'Time to live'\n# Blinded part of the message\nmsg = b'A commodity takes on, like the added meaning invested in a fetishized object, the value of the labor that went into making it.'\n\nparams = choose_parameters(L, N)\nsigner = Signer(params)\nsigner.start(info)\n\nuser = User(params, signer.keypair.y) # y is the public key\nuser.start(info, msg)\n\na, b = signer.one()\ne = user.two(a, b)\nr, c, s, d = signer.three(e)\nrho, omega, delta, sigma = user.four(r, c, s, d)\n\n# check the signature\nassert check(rho, omega, delta, sigma, user.z, msg, user.y, params)\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcowlicks%2Fpartially","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcowlicks%2Fpartially","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcowlicks%2Fpartially/lists"}