#cryptography

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Public Key Infrastructure

A simple SHA-256 / SHA-224 hash function for JavaScript supports UTF-8 encoding.

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Generic, HSM-friendly Verifiable Credentials core — VC-JWT and Data Integrity proofs, DID resolution (key/web/ebsi), status lists — with an optional read-only EBSI plugin.

A pure-Rust, no_std cryptography toolkit: constant-time primitives, classical & post-quantum public-key, X.509, and the TLS/DTLS/QUIC stack — no foreign code, no C dependencies.

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Bring Discord DAVE end-to-end encryption to Go with a native, godave-compatible implementation.

A simple service for interacting with an HSM or other PKCS#11 device.

Cryptographically-secure pseudo-random generator based on cryptographic hash function in Rust

Pure-Go off-heap secret memory: mmap/mlock, memfd_secret L4 isolation, guard pages, fail-closed by default

Hybrid Post Quantum Cryptography

A collection of BIP crates: BIP-0032 / BIP-0039

Onion Routed Micropayments for the Lightning Network

Layer-1 Blockchain Protocol based on novel Proof-of-Pledge consensus

A Python API for the GNU Privacy Guard (GnuPG). Encrypt, decrypt, sign and verify your data using Python! N.B. This repository has been migrated from Mercurial on 2019-11-16, so references to commits before this date will refer to the Mercurial source and not this Git repository. The migration is marked by a commit that adds a .gitignore file.

PHP Privacy - The OpenPGP library in PHP language

Go bindings for liboqs

Compiler-free Python crypto library backed by the OS, supporting CPython and PyPy

Modular math primitives in Rust

Python ASN.1 library with a focus on performance and a pythonic API

simple extension methods which make working with cryptography easier

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Native Post-Quantum Agent Messaging Protocol (N-PAMP): a binary, multi-channel wire protocol for authenticated agent-to-agent communication with hybrid post-quantum cryptography. IETF Internet-Draft.

libsodium for .NET - A secure cryptographic library

Post-quantum cryptography SDK for JS/TS — ML-KEM-768 and ML-DSA-65 (FIPS 203/204) with safe defaults. Docs: https://jeloercc.github.io/pqc-sdk/

Shamir's Secret Sharing - Golang

Blake3.NET provides two fast, SIMD-accelerated implementations of the BLAKE3 cryptographic hash function: the fully managed Blake3 package and the native Blake3.Native package, which wraps the official Rust implementation.

Opinionated, environment-aware encryption for Go, inspired by Laravel’s Crypt facade.

Batteries-included Go cryptography library: AES-256-GCM & ChaCha20-Poly1305 authenticated encryption, argon2id/bcrypt password hashing, HMAC & Ed25519 signing, HKDF, key rotation, KMS envelope encryption, and secure random — safe defaults, stdlib-only, byte-for-byte interop with the TypeScript crypt-ts.