{"id":50486904,"url":"https://github.com/systemslibrarian/crypto-lab-iron-serpent","last_synced_at":"2026-06-01T23:02:48.953Z","repository":{"id":349528951,"uuid":"1202414461","full_name":"systemslibrarian/crypto-lab-iron-serpent","owner":"systemslibrarian","description":"Browser-based demo of Serpent-256, the AES finalist with the largest security margin — featuring encrypt/decrypt, round comparison visualization, and live performance benchmarks","archived":false,"fork":false,"pushed_at":"2026-04-11T22:13:14.000Z","size":139,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":0,"default_branch":"main","last_synced_at":"2026-04-12T00:21:13.823Z","etag":null,"topics":["aes-finalist","argon2id","block-cipher","browser-demo","crypto-lab","cryptography","hmac","javascript","serpent","symmetric-encryption"],"latest_commit_sha":null,"homepage":"https://systemslibrarian.github.io/crypto-lab-iron-serpent/","language":null,"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/systemslibrarian.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":"2026-04-06T02:05:22.000Z","updated_at":"2026-04-11T22:13:17.000Z","dependencies_parsed_at":null,"dependency_job_id":null,"html_url":"https://github.com/systemslibrarian/crypto-lab-iron-serpent","commit_stats":null,"previous_names":["systemslibrarian/iron-serpent","systemslibrarian/crypto-lab-iron-serpent"],"tags_count":null,"template":false,"template_full_name":null,"purl":"pkg:github/systemslibrarian/crypto-lab-iron-serpent","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/systemslibrarian%2Fcrypto-lab-iron-serpent","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/systemslibrarian%2Fcrypto-lab-iron-serpent/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/systemslibrarian%2Fcrypto-lab-iron-serpent/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/systemslibrarian%2Fcrypto-lab-iron-serpent/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/systemslibrarian","download_url":"https://codeload.github.com/systemslibrarian/crypto-lab-iron-serpent/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/systemslibrarian%2Fcrypto-lab-iron-serpent/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":33797128,"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":"2026-06-01T02:00:06.963Z","response_time":115,"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":["aes-finalist","argon2id","block-cipher","browser-demo","crypto-lab","cryptography","hmac","javascript","serpent","symmetric-encryption"],"created_at":"2026-06-01T23:02:48.293Z","updated_at":"2026-06-01T23:02:48.941Z","avatar_url":"https://github.com/systemslibrarian.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# iron-serpent\n\n## What It Is\n\nIron Serpent is a browser demo for password-based symmetric encryption built around Serpent-256-CTR, with Argon2id deriving the key material from a passphrase and HMAC-SHA256 authenticating the payload. It shows how to encrypt and decrypt text in the browser without sending plaintext to a server. The problem it addresses is confidential, integrity-checked handling of user-supplied text behind a shared secret. The security model is symmetric authenticated encryption with a password-derived key.\n\n## When to Use It\n\n- Use it for client-side text encryption demos that need to show a non-AES block cipher in a real browser workflow. Serpent-256-CTR gives you a concrete symmetric cipher example while Argon2id and HMAC-SHA256 show the surrounding pieces needed for password-based authenticated encryption.\n- Use it for teaching or lab work around conservative block-cipher design choices. The demo contrasts Serpent's 32-round design and benchmark behavior with AES-256-GCM in a way that is easy to inspect locally.\n- Use it when you need a passphrase-derived workflow instead of raw random keys. Argon2id makes the demo appropriate for explaining how human-entered secrets can be stretched into a 256-bit encryption key.\n- Do not use it when you need a standardized interchange format or protocol integration. The JSON payload and demo wiring are suitable for a lab environment, not a substitute for established application protocols.\n\n## Live Demo\n\n[https://systemslibrarian.github.io/crypto-lab-iron-serpent/](https://systemslibrarian.github.io/crypto-lab-iron-serpent/)\n\nThe live demo lets you enter a passphrase and plaintext, produce an encrypted JSON payload, and decrypt that payload back in the browser. It also includes Base64 and Hex output controls, a benchmark panel with Data size and Iterations controls, and an Argon2id parameters panel that shows the KDF settings used for key derivation.\n\n## How to Run Locally\n\n```bash\ngit clone https://github.com/systemslibrarian/crypto-lab-iron-serpent.git\ncd crypto-lab-iron-serpent/demos/iron-serpent\nnpm install\nnpm run dev\n```\n\nNo environment variables are required.\n\n## Part of the Crypto-Lab Suite\n\nThis demo is one part of the broader Crypto-Lab collection at [https://systemslibrarian.github.io/crypto-lab/](https://systemslibrarian.github.io/crypto-lab/).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsystemslibrarian%2Fcrypto-lab-iron-serpent","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsystemslibrarian%2Fcrypto-lab-iron-serpent","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsystemslibrarian%2Fcrypto-lab-iron-serpent/lists"}