{"id":50757665,"url":"https://github.com/yumin-chen/rc4-cipher-in-assembly","last_synced_at":"2026-06-11T06:32:14.083Z","repository":{"id":72069746,"uuid":"48122911","full_name":"yumin-chen/rc4-cipher-in-assembly","owner":"yumin-chen","description":"RC4 Cipher implemented in x86 assembly language for faster speed.","archived":false,"fork":false,"pushed_at":"2015-12-19T13:26:03.000Z","size":79,"stargazers_count":6,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2023-08-02T14:28:33.535Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"http://www.CharmySoft.com/app/rc4-cipher.htm","language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"gpl-3.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/yumin-chen.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":"2015-12-16T16:47:58.000Z","updated_at":"2023-08-02T14:28:33.536Z","dependencies_parsed_at":"2023-03-15T18:11:36.160Z","dependency_job_id":null,"html_url":"https://github.com/yumin-chen/rc4-cipher-in-assembly","commit_stats":null,"previous_names":[],"tags_count":0,"template":null,"template_full_name":null,"purl":"pkg:github/yumin-chen/rc4-cipher-in-assembly","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/yumin-chen%2Frc4-cipher-in-assembly","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/yumin-chen%2Frc4-cipher-in-assembly/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/yumin-chen%2Frc4-cipher-in-assembly/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/yumin-chen%2Frc4-cipher-in-assembly/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/yumin-chen","download_url":"https://codeload.github.com/yumin-chen/rc4-cipher-in-assembly/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/yumin-chen%2Frc4-cipher-in-assembly/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":34186385,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-26T15:22:16.424Z","status":"online","status_checked_at":"2026-06-11T02:00:06.485Z","response_time":57,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"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":[],"created_at":"2026-06-11T06:32:13.967Z","updated_at":"2026-06-11T06:32:14.071Z","avatar_url":"https://github.com/yumin-chen.png","language":"C","funding_links":[],"categories":[],"sub_categories":[],"readme":"\u003cimg src=\"http://raw.github.com/CharmySoft/rc4-cipher-in-assembly/master/icons/icon-dark.png\" width=\"48\"/\u003e\u0026nbsp;\u0026nbsp;**RC4 Cipher in Assembly**\n========================\nDetails of this project can be found on the [RC4 Cipher project page][2] under:  \n[*http://www.CharmySoft.com/app/rc4-cipher.htm*][2]\n\nIntroduction\n------------------------\n[RC4 Cipher in Assembly][2] is the RC4 stream cipher implemented in Assembly language for faster speed.  \nFor more information about the RC4 stream cipher, please read [Wikipedia: RC4](https://en.wikipedia.org/wiki/RC4).  \n\n\nInstruction\n------------------------\nThis project uses inline assemly in C to optimize the RC4 stream cipher, so the assembly code is in Intel style syntax that is supported by Microsoft Assembler (MASM). Thus, you should be using Microsoft Visual C++ to compile the code.  \nThe [rc4_cipher.c](rc4_cipher.c) file contains the x86 assemly version of the RC cipher.  \nThe [rc4_test.c](rc4_test.c) file contains the C version of the RC cipher and a benchmark test example to demonstrate the speed improvement.  \nThe [rc4_cipher.e](rc4_cipher.e) file is for E language (or EPL) users.  \n\n\nScreenshots\n------------------------\n![Benchmark](/screenshots/benchmark.png?raw=true \"Benchmark\")\n\n\nLicensing\n------------------------\nPlease see the file named [LICENSE](LICENSE).\n\n\nAuthor\n------------------------\n* Charlie Chen  \n\tfounder of [CharmySoft][1]\n\n\nContact\n------------------------\n* CharmySoft: [*http://www.CharmySoft.com/*][1]  \n* About: [*http://www.CharmySoft.com/about.htm*][3]  \n\n[1]: http://www.CharmySoft.com/ \"CharmySoft\"\n[2]: http://www.CharmySoft.com/app/rc4-cipher.htm \"RC4 Cipher in Assembly\"\n[3]: http://www.CharmySoft.com/about.htm \"About CharmySoft\"","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fyumin-chen%2Frc4-cipher-in-assembly","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fyumin-chen%2Frc4-cipher-in-assembly","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fyumin-chen%2Frc4-cipher-in-assembly/lists"}