dchest/tweetnacl-js

Health v2 · maintenance only

Adoption not part of the score

1921 stars · 296 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

TweetNaCl.js is a JavaScript port of the TweetNaCl/NaCl cryptographic library, providing high-level APIs for secret-key and public-key authenticated encryption, Ed25519 signatures, SHA-512 hashing, and random byte generation in a compact 7 KB package. It works in modern browsers and Node.js, is public domain, and has been security-audited by Cure53.

Use cases

• encrypt and decrypt messages with a shared secret key in JavaScript
• implement public-key authenticated encryption with Curve25519 in the browser
• sign and verify messages with Ed25519 signatures in Node.js
• hash data with SHA-512 in a web app
• generate cryptographically secure random bytes in JavaScript
• perform constant-time comparison of secrets to avoid timing attacks
• add compact crypto to a browser extension or client-side app

When to choose

• you need a small, audited, dependency-free crypto library for browser or Node.js
• you need NaCl-compatible primitives like secretbox, box, or Ed25519 in JavaScript
• you want a public-domain license with no licensing restrictions
• you need a faithful port of TweetNaCl with a thin idiomatic API

When to avoid

• you can use the WebCrypto API, which covers X25519, Ed25519, and SHA-512 natively
• you need a full security protocol or key-committing encryption, since this is a low-level primitive library
• you need XSalsa20-Poly1305 with post-quantum or key-commitment guarantees
• you need high-performance crypto where native implementations are available

Facets

library · maturity stable

cryptography auth serialization security developer-tools web-development browser cross-platform tweetnacl nacl libsodium ed25519 curve25519 salsa20 poly1305 sha-512 secretbox public-key-cryptography authenticated-encryption signatures audited javascript nodejs

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