TweetNaCl.js Changelog

TweetNaCl.js Changelog


  • Fixed incomplete return types in TypeScript typings.
  • Replaced COPYING.txt with LICENSE file, which now has public domain dedication text from The Unlicense. License fields in package.json and bower.json have been set to “Unlicense”. The project was and will be in the public domain – this change just makes it easier for automated tools to know about this fact by using the widely recognized and SPDX-compatible template for public domain dedication.


  • Added TypeScript type definitions (contributed by @AndSDev).
  • Improved benchmarking code.


Fixed a bug in the fast version of Poly1305 and brought it back.

Thanks to @floodyberry for promptly responding and fixing the original C code:

“The issue was not properly detecting if st->h was >= 2^130 - 5, coupled with [testing mistake] not catching the failure. The chance of the bug affecting anything in the real world is essentially zero luckily, but it’s good to have it fixed.”


Switched Poly1305 fast version back to original (slow) version due to a bug.


No code changes, just tweaked packaging and added COPYING.txt.


  • Breaking change! All functions from nacl.util have been removed. These functions are no longer available:


    If want to continue using them, you can include package:

    <script src="nacl.min.js"></script>
    <script src="nacl-util.min.js"></script>


    var nacl = require('tweetnacl');
    nacl.util = require('tweetnacl-util');

    However it is recommended to use better packages that have wider compatibility and better performance. Functions from nacl.util were never intended to be robust solution for string conversion and were included for convenience: cryptography library is not the right place for them.

    Currently calling these functions will throw error pointing to tweetnacl-util-js (in the next version this error message will be removed).

  • Improved detection of available random number generators, making it possible to use nacl.randomBytes and related functions in Web Workers without changes.

  • Changes to testing (see README).


No code changes.

  • Reverted license field in package.json to “Public domain”.

  • Fixed typo in README.


  • Fixed undefined variable bug in fast version of Poly1305. No worries, this bug was never triggered.

  • Specified CC0 public domain dedication.

  • Updated development dependencies.


  • Exclude crypto and buffer modules from browserify builds.


  • Made nacl-fast the default version in NPM package. Now require("tweetnacl") will use fast version; to get the original version, use require("tweetnacl/nacl.js").

  • Cleanup temporary array after generating random bytes.


  • Improved performance of curve operations, making nacl.scalarMult,, nacl.sign and related functions up to 3x faster in nacl-fast version.


  • Significantly improved performance of Salsa20 (~1.5x faster) and Poly1305 (~3.5x faster) in nacl-fast version.


  • Instead of using the given secret key directly, TweetNaCl.js now copies it to a new array in and nacl.sign.keyPair.fromSecretKey.


  • Added new constant: nacl.sign.seedLength.


  • Even faster hash for both short and long inputs (in nacl-fast).


  • Implement nacl.sign.keyPair.fromSeed to enable creation of sign key pairs deterministically from a 32-byte seed. (It behaves like libsodium’s crypto_sign_seed_keypair: the seed becomes a secret part of the secret key.)

  • Fast version now has an improved hash implementation that is 2x-5x faster.

  • Fixed benchmarks, which may have produced incorrect measurements.


  • Exported undocumented nacl.lowlevel.crypto_core_hsalsa20.


  • Signature API breaking change! nacl.sign and now deal with signed messages, and new nacl.sign.detached and nacl.sign.detached.verify are available.

Previously, nacl.sign returned a signature, and accepted a message and “detached” signature. This was unlike NaCl’s API, which dealt with signed messages (concatenation of signature and message).

The new API is:

  nacl.sign(message, secretKey) -> signedMessage, publicKey) -> message | null

Since detached signatures are common, two new API functions were introduced:

  nacl.sign.detached(message, secretKey) -> signature
  nacl.sign.detached.verify(message, signature, publicKey) -> true | false

(Note that it’s verify, not open, and it returns a boolean value, unlike open, which returns an “unsigned” message.)

  • NPM package now comes without test directory to keep it small.


  • Improved documentation.
  • Fast version: increased theoretical message size limit from 2^32-1 to 2^52 bytes in Poly1305 (and thus, secretbox and box). However this has no impact in practice since JavaScript arrays or ArrayBuffers are limited to 32-bit indexes, and most implementations won’t allocate more than a gigabyte or so. (Obviously, there are no tests for the correctness of implementation.) Also, it’s not recommended to use messages that large without splitting them into smaller packets anyway.


  • Initial release