CIRCL: Cloudflare Interoperable Reusable Cryptographic Library

Usable, easy and safe pure-Rust crypto

A Hybrid Public Key Encryption (HPKE) module built on top of Web Cryptography API.

A Messaging Layer Security (RFC 9420, MLS) implementation in TypeScript

Pure Rust implementation of HPKE (https://www.rfc-editor.org/rfc/rfc9180.html)

Hybrid Public Key Encryption (HPKE) for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes

A Python implementation of CWT/COSE.

Faster, Smaller, Harder HPKE for Rust

A small and easy to use HPKE implementation in Go.

HPKE implementation for Zig.

Crypto Forum Research Group's draft HPKE: Hybrid Public Key Encryption in Go

A Python Implementation of HPKE (Hybrid Public Key Encryption)

The Hybrid Public Key Encryption (HPKE) standard in Python

Attestation-bound encrypted tensor transport for confidential ML inference over VSock/TCP. Binary framing, X25519+ChaCha20Poly1305 AEAD, 3-message attested handshake.

Encrypted HTTP Body Protocol (EHBP) encrypts the HTTP request and response body with HPKE

AWS Nitro Enclaves Vault

end-to-end encrypted messaging on deno

Communication over untrusted networks

End-to-end encryption for HTTP APIs using RFC 9180 HPKE. Drop-in middleware for FastAPI, aiohttp, and httpx.

Offline-first CLI for sharing encrypted .env files and other secrets through Git