{"id":32175173,"url":"https://github.com/blievrouw/crc64iso","last_synced_at":"2026-02-20T00:32:41.370Z","repository":{"id":60721999,"uuid":"145886708","full_name":"blievrouw/crc64iso","owner":"blievrouw","description":"64-bit CRC (ISO 3309) checksum generator using python 3.x","archived":false,"fork":false,"pushed_at":"2018-08-23T17:37:33.000Z","size":14,"stargazers_count":2,"open_issues_count":0,"forks_count":1,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-10-21T19:36:44.436Z","etag":null,"topics":["checksum","crc-64","crc64","cyclic-redundancy-check","data-integrity","digest","iso3309","python3"],"latest_commit_sha":null,"homepage":"https://pypi.org/project/crc64iso/","language":"Python","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/blievrouw.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2018-08-23T17:31:14.000Z","updated_at":"2021-03-31T19:27:51.000Z","dependencies_parsed_at":"2022-10-03T20:31:47.739Z","dependency_job_id":null,"html_url":"https://github.com/blievrouw/crc64iso","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/blievrouw/crc64iso","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/blievrouw%2Fcrc64iso","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/blievrouw%2Fcrc64iso/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/blievrouw%2Fcrc64iso/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/blievrouw%2Fcrc64iso/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/blievrouw","download_url":"https://codeload.github.com/blievrouw/crc64iso/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/blievrouw%2Fcrc64iso/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29637412,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-19T22:32:43.237Z","status":"ssl_error","status_checked_at":"2026-02-19T22:32:38.330Z","response_time":117,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 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":["checksum","crc-64","crc64","cyclic-redundancy-check","data-integrity","digest","iso3309","python3"],"created_at":"2025-10-21T19:26:32.322Z","updated_at":"2026-02-20T00:32:41.365Z","avatar_url":"https://github.com/blievrouw.png","language":"Python","funding_links":[],"categories":[],"sub_categories":[],"readme":"# CRC64ISO\n\nPackage for calculating checksums using __64-bit cyclic redundancy checks (CRC)__ according to the __ISO 3309__ standard.\n\nGenerator polynomial: x\u003csup\u003e64\u003c/sup\u003e + x\u003csup\u003e4\u003c/sup\u003e + x\u003csup\u003e3\u003c/sup\u003e + x + 1\n\nReference:\n_W. H. Press, S. A. Teukolsky, W. T. Vetterling, and B. P. Flannery, \"Numerical recipes in C\", 2nd ed.,\nCambridge University Press. Pages 896ff._\n\n\n### Requirements\n\n- python 3.x\n\n\n### Installation\n\n```\npip install crc64iso\n```\n\n[PyPI](https://pypi.org/project/crc64iso/)\n\n\n### Examples\n\n- Calculate 64-bit checksum from a string:\n\n```\nfrom crc64iso.crc64iso import crc64\n\nchecksum = crc64iso.crc64(\"ILOVEMATH\")\n```\n\n- Calculate 64-bit checksum from incremental (bytes) data:\n\n```\nfrom crc64iso.crc64iso import crc64_pair, format_crc64_pair\n\ncrc_pair_1 = crc64_pair(\"ILOVE\".encode())\ncrc_pair_2 = crc64_pair(\"MATH\".encode(), crc_pair_1)\nchecksum = format_crc64_pair(crc_pair_2)\n```\n\n\n\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fblievrouw%2Fcrc64iso","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fblievrouw%2Fcrc64iso","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fblievrouw%2Fcrc64iso/lists"}