Son CV dans un terminal web en Javascript!
https://terminal-cv.gregandev.fr
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
459 lines
13 KiB
459 lines
13 KiB
TweetNaCl.js
|
|
============
|
|
|
|
Port of [TweetNaCl](http://tweetnacl.cr.yp.to) / [NaCl](http://nacl.cr.yp.to/)
|
|
to JavaScript for modern browsers and Node.js. Public domain.
|
|
|
|
[
|
|
](https://travis-ci.org/dchest/tweetnacl-js)
|
|
|
|
Demo: <https://tweetnacl.js.org>
|
|
|
|
**:warning: The library is stable and API is frozen, however it has not been
|
|
independently reviewed. If you can help reviewing it, please [contact
|
|
me](mailto:dmitry@codingrobots.com).**
|
|
|
|
Documentation
|
|
=============
|
|
|
|
* [Overview](#overview)
|
|
* [Installation](#installation)
|
|
* [Usage](#usage)
|
|
* [Public-key authenticated encryption (box)](#public-key-authenticated-encryption-box)
|
|
* [Secret-key authenticated encryption (secretbox)](#secret-key-authenticated-encryption-secretbox)
|
|
* [Scalar multiplication](#scalar-multiplication)
|
|
* [Signatures](#signatures)
|
|
* [Hashing](#hashing)
|
|
* [Random bytes generation](#random-bytes-generation)
|
|
* [Constant-time comparison](#constant-time-comparison)
|
|
* [System requirements](#system-requirements)
|
|
* [Development and testing](#development-and-testing)
|
|
* [Benchmarks](#benchmarks)
|
|
* [Contributors](#contributors)
|
|
* [Who uses it](#who-uses-it)
|
|
|
|
|
|
Overview
|
|
--------
|
|
|
|
The primary goal of this project is to produce a translation of TweetNaCl to
|
|
JavaScript which is as close as possible to the original C implementation, plus
|
|
a thin layer of idiomatic high-level API on top of it.
|
|
|
|
There are two versions, you can use either of them:
|
|
|
|
* `nacl.js` is the port of TweetNaCl with minimum differences from the
|
|
original + high-level API.
|
|
|
|
* `nacl-fast.js` is like `nacl.js`, but with some functions replaced with
|
|
faster versions.
|
|
|
|
|
|
Installation
|
|
------------
|
|
|
|
You can install TweetNaCl.js via a package manager:
|
|
|
|
[Bower](http://bower.io):
|
|
|
|
$ bower install tweetnacl
|
|
|
|
[NPM](https://www.npmjs.org/):
|
|
|
|
$ npm install tweetnacl
|
|
|
|
or [download source code](https://github.com/dchest/tweetnacl-js/releases).
|
|
|
|
|
|
Usage
|
|
-----
|
|
|
|
All API functions accept and return bytes as `Uint8Array`s. If you need to
|
|
encode or decode strings, use functions from
|
|
<https://github.com/dchest/tweetnacl-util-js> or one of the more robust codec
|
|
packages.
|
|
|
|
In Node.js v4 and later `Buffer` objects are backed by `Uint8Array`s, so you
|
|
can freely pass them to TweetNaCl.js functions as arguments. The returned
|
|
objects are still `Uint8Array`s, so if you need `Buffer`s, you'll have to
|
|
convert them manually; make sure to convert using copying: `new Buffer(array)`,
|
|
instead of sharing: `new Buffer(array.buffer)`, because some functions return
|
|
subarrays of their buffers.
|
|
|
|
|
|
### Public-key authenticated encryption (box)
|
|
|
|
Implements *curve25519-xsalsa20-poly1305*.
|
|
|
|
#### nacl.box.keyPair()
|
|
|
|
Generates a new random key pair for box and returns it as an object with
|
|
`publicKey` and `secretKey` members:
|
|
|
|
{
|
|
publicKey: ..., // Uint8Array with 32-byte public key
|
|
secretKey: ... // Uint8Array with 32-byte secret key
|
|
}
|
|
|
|
|
|
#### nacl.box.keyPair.fromSecretKey(secretKey)
|
|
|
|
Returns a key pair for box with public key corresponding to the given secret
|
|
key.
|
|
|
|
#### nacl.box(message, nonce, theirPublicKey, mySecretKey)
|
|
|
|
Encrypt and authenticates message using peer's public key, our secret key, and
|
|
the given nonce, which must be unique for each distinct message for a key pair.
|
|
|
|
Returns an encrypted and authenticated message, which is
|
|
`nacl.box.overheadLength` longer than the original message.
|
|
|
|
#### nacl.box.open(box, nonce, theirPublicKey, mySecretKey)
|
|
|
|
Authenticates and decrypts the given box with peer's public key, our secret
|
|
key, and the given nonce.
|
|
|
|
Returns the original message, or `false` if authentication fails.
|
|
|
|
#### nacl.box.before(theirPublicKey, mySecretKey)
|
|
|
|
Returns a precomputed shared key which can be used in `nacl.box.after` and
|
|
`nacl.box.open.after`.
|
|
|
|
#### nacl.box.after(message, nonce, sharedKey)
|
|
|
|
Same as `nacl.box`, but uses a shared key precomputed with `nacl.box.before`.
|
|
|
|
#### nacl.box.open.after(box, nonce, sharedKey)
|
|
|
|
Same as `nacl.box.open`, but uses a shared key precomputed with `nacl.box.before`.
|
|
|
|
#### nacl.box.publicKeyLength = 32
|
|
|
|
Length of public key in bytes.
|
|
|
|
#### nacl.box.secretKeyLength = 32
|
|
|
|
Length of secret key in bytes.
|
|
|
|
#### nacl.box.sharedKeyLength = 32
|
|
|
|
Length of precomputed shared key in bytes.
|
|
|
|
#### nacl.box.nonceLength = 24
|
|
|
|
Length of nonce in bytes.
|
|
|
|
#### nacl.box.overheadLength = 16
|
|
|
|
Length of overhead added to box compared to original message.
|
|
|
|
|
|
### Secret-key authenticated encryption (secretbox)
|
|
|
|
Implements *xsalsa20-poly1305*.
|
|
|
|
#### nacl.secretbox(message, nonce, key)
|
|
|
|
Encrypt and authenticates message using the key and the nonce. The nonce must
|
|
be unique for each distinct message for this key.
|
|
|
|
Returns an encrypted and authenticated message, which is
|
|
`nacl.secretbox.overheadLength` longer than the original message.
|
|
|
|
#### nacl.secretbox.open(box, nonce, key)
|
|
|
|
Authenticates and decrypts the given secret box using the key and the nonce.
|
|
|
|
Returns the original message, or `false` if authentication fails.
|
|
|
|
#### nacl.secretbox.keyLength = 32
|
|
|
|
Length of key in bytes.
|
|
|
|
#### nacl.secretbox.nonceLength = 24
|
|
|
|
Length of nonce in bytes.
|
|
|
|
#### nacl.secretbox.overheadLength = 16
|
|
|
|
Length of overhead added to secret box compared to original message.
|
|
|
|
|
|
### Scalar multiplication
|
|
|
|
Implements *curve25519*.
|
|
|
|
#### nacl.scalarMult(n, p)
|
|
|
|
Multiplies an integer `n` by a group element `p` and returns the resulting
|
|
group element.
|
|
|
|
#### nacl.scalarMult.base(n)
|
|
|
|
Multiplies an integer `n` by a standard group element and returns the resulting
|
|
group element.
|
|
|
|
#### nacl.scalarMult.scalarLength = 32
|
|
|
|
Length of scalar in bytes.
|
|
|
|
#### nacl.scalarMult.groupElementLength = 32
|
|
|
|
Length of group element in bytes.
|
|
|
|
|
|
### Signatures
|
|
|
|
Implements [ed25519](http://ed25519.cr.yp.to).
|
|
|
|
#### nacl.sign.keyPair()
|
|
|
|
Generates new random key pair for signing and returns it as an object with
|
|
`publicKey` and `secretKey` members:
|
|
|
|
{
|
|
publicKey: ..., // Uint8Array with 32-byte public key
|
|
secretKey: ... // Uint8Array with 64-byte secret key
|
|
}
|
|
|
|
#### nacl.sign.keyPair.fromSecretKey(secretKey)
|
|
|
|
Returns a signing key pair with public key corresponding to the given
|
|
64-byte secret key. The secret key must have been generated by
|
|
`nacl.sign.keyPair` or `nacl.sign.keyPair.fromSeed`.
|
|
|
|
#### nacl.sign.keyPair.fromSeed(seed)
|
|
|
|
Returns a new signing key pair generated deterministically from a 32-byte seed.
|
|
The seed must contain enough entropy to be secure. This method is not
|
|
recommended for general use: instead, use `nacl.sign.keyPair` to generate a new
|
|
key pair from a random seed.
|
|
|
|
#### nacl.sign(message, secretKey)
|
|
|
|
Signs the message using the secret key and returns a signed message.
|
|
|
|
#### nacl.sign.open(signedMessage, publicKey)
|
|
|
|
Verifies the signed message and returns the message without signature.
|
|
|
|
Returns `null` if verification failed.
|
|
|
|
#### nacl.sign.detached(message, secretKey)
|
|
|
|
Signs the message using the secret key and returns a signature.
|
|
|
|
#### nacl.sign.detached.verify(message, signature, publicKey)
|
|
|
|
Verifies the signature for the message and returns `true` if verification
|
|
succeeded or `false` if it failed.
|
|
|
|
#### nacl.sign.publicKeyLength = 32
|
|
|
|
Length of signing public key in bytes.
|
|
|
|
#### nacl.sign.secretKeyLength = 64
|
|
|
|
Length of signing secret key in bytes.
|
|
|
|
#### nacl.sign.seedLength = 32
|
|
|
|
Length of seed for `nacl.sign.keyPair.fromSeed` in bytes.
|
|
|
|
#### nacl.sign.signatureLength = 64
|
|
|
|
Length of signature in bytes.
|
|
|
|
|
|
### Hashing
|
|
|
|
Implements *SHA-512*.
|
|
|
|
#### nacl.hash(message)
|
|
|
|
Returns SHA-512 hash of the message.
|
|
|
|
#### nacl.hash.hashLength = 64
|
|
|
|
Length of hash in bytes.
|
|
|
|
|
|
### Random bytes generation
|
|
|
|
#### nacl.randomBytes(length)
|
|
|
|
Returns a `Uint8Array` of the given length containing random bytes of
|
|
cryptographic quality.
|
|
|
|
**Implementation note**
|
|
|
|
TweetNaCl.js uses the following methods to generate random bytes,
|
|
depending on the platform it runs on:
|
|
|
|
* `window.crypto.getRandomValues` (WebCrypto standard)
|
|
* `window.msCrypto.getRandomValues` (Internet Explorer 11)
|
|
* `crypto.randomBytes` (Node.js)
|
|
|
|
If the platform doesn't provide a suitable PRNG, the following functions,
|
|
which require random numbers, will throw exception:
|
|
|
|
* `nacl.randomBytes`
|
|
* `nacl.box.keyPair`
|
|
* `nacl.sign.keyPair`
|
|
|
|
Other functions are deterministic and will continue working.
|
|
|
|
If a platform you are targeting doesn't implement secure random number
|
|
generator, but you somehow have a cryptographically-strong source of entropy
|
|
(not `Math.random`!), and you know what you are doing, you can plug it into
|
|
TweetNaCl.js like this:
|
|
|
|
nacl.setPRNG(function(x, n) {
|
|
// ... copy n random bytes into x ...
|
|
});
|
|
|
|
Note that `nacl.setPRNG` *completely replaces* internal random byte generator
|
|
with the one provided.
|
|
|
|
|
|
### Constant-time comparison
|
|
|
|
#### nacl.verify(x, y)
|
|
|
|
Compares `x` and `y` in constant time and returns `true` if their lengths are
|
|
non-zero and equal, and their contents are equal.
|
|
|
|
Returns `false` if either of the arguments has zero length, or arguments have
|
|
different lengths, or their contents differ.
|
|
|
|
|
|
System requirements
|
|
-------------------
|
|
|
|
TweetNaCl.js supports modern browsers that have a cryptographically secure
|
|
pseudorandom number generator and typed arrays, including the latest versions
|
|
of:
|
|
|
|
* Chrome
|
|
* Firefox
|
|
* Safari (Mac, iOS)
|
|
* Internet Explorer 11
|
|
|
|
Other systems:
|
|
|
|
* Node.js
|
|
|
|
|
|
Development and testing
|
|
------------------------
|
|
|
|
Install NPM modules needed for development:
|
|
|
|
$ npm install
|
|
|
|
To build minified versions:
|
|
|
|
$ npm run build
|
|
|
|
Tests use minified version, so make sure to rebuild it every time you change
|
|
`nacl.js` or `nacl-fast.js`.
|
|
|
|
### Testing
|
|
|
|
To run tests in Node.js:
|
|
|
|
$ npm run test-node
|
|
|
|
By default all tests described here work on `nacl.min.js`. To test other
|
|
versions, set environment variable `NACL_SRC` to the file name you want to test.
|
|
For example, the following command will test fast minified version:
|
|
|
|
$ NACL_SRC=nacl-fast.min.js npm run test-node
|
|
|
|
To run full suite of tests in Node.js, including comparing outputs of
|
|
JavaScript port to outputs of the original C version:
|
|
|
|
$ npm run test-node-all
|
|
|
|
To prepare tests for browsers:
|
|
|
|
$ npm run build-test-browser
|
|
|
|
and then open `test/browser/test.html` (or `test/browser/test-fast.html`) to
|
|
run them.
|
|
|
|
To run headless browser tests with `tape-run` (powered by Electron):
|
|
|
|
$ npm run test-browser
|
|
|
|
(If you get `Error: spawn ENOENT`, install *xvfb*: `sudo apt-get install xvfb`.)
|
|
|
|
To run tests in both Node and Electron:
|
|
|
|
$ npm test
|
|
|
|
### Benchmarking
|
|
|
|
To run benchmarks in Node.js:
|
|
|
|
$ npm run bench
|
|
$ NACL_SRC=nacl-fast.min.js npm run bench
|
|
|
|
To run benchmarks in a browser, open `test/benchmark/bench.html` (or
|
|
`test/benchmark/bench-fast.html`).
|
|
|
|
|
|
Benchmarks
|
|
----------
|
|
|
|
For reference, here are benchmarks from MacBook Pro (Retina, 13-inch, Mid 2014)
|
|
laptop with 2.6 GHz Intel Core i5 CPU (Intel) in Chrome 53/OS X and Xiaomi Redmi
|
|
Note 3 smartphone with 1.8 GHz Qualcomm Snapdragon 650 64-bit CPU (ARM) in
|
|
Chrome 52/Android:
|
|
|
|
| | nacl.js Intel | nacl-fast.js Intel | nacl.js ARM | nacl-fast.js ARM |
|
|
| ------------- |:-------------:|:-------------------:|:-------------:|:-----------------:|
|
|
| salsa20 | 1.3 MB/s | 128 MB/s | 0.4 MB/s | 43 MB/s |
|
|
| poly1305 | 13 MB/s | 171 MB/s | 4 MB/s | 52 MB/s |
|
|
| hash | 4 MB/s | 34 MB/s | 0.9 MB/s | 12 MB/s |
|
|
| secretbox 1K | 1113 op/s | 57583 op/s | 334 op/s | 14227 op/s |
|
|
| box 1K | 145 op/s | 718 op/s | 37 op/s | 368 op/s |
|
|
| scalarMult | 171 op/s | 733 op/s | 56 op/s | 380 op/s |
|
|
| sign | 77 op/s | 200 op/s | 20 op/s | 61 op/s |
|
|
| sign.open | 39 op/s | 102 op/s | 11 op/s | 31 op/s |
|
|
|
|
(You can run benchmarks on your devices by clicking on the links at the bottom
|
|
of the [home page](https://tweetnacl.js.org)).
|
|
|
|
In short, with *nacl-fast.js* and 1024-byte messages you can expect to encrypt and
|
|
authenticate more than 57000 messages per second on a typical laptop or more than
|
|
14000 messages per second on a $170 smartphone, sign about 200 and verify 100
|
|
messages per second on a laptop or 60 and 30 messages per second on a smartphone,
|
|
per CPU core (with Web Workers you can do these operations in parallel),
|
|
which is good enough for most applications.
|
|
|
|
|
|
Contributors
|
|
------------
|
|
|
|
See AUTHORS.md file.
|
|
|
|
|
|
Third-party libraries based on TweetNaCl.js
|
|
-------------------------------------------
|
|
|
|
* [forward-secrecy](https://github.com/alax/forward-secrecy) — Axolotl ratchet implementation
|
|
* [nacl-stream](https://github.com/dchest/nacl-stream-js) - streaming encryption
|
|
* [tweetnacl-auth-js](https://github.com/dchest/tweetnacl-auth-js) — implementation of [`crypto_auth`](http://nacl.cr.yp.to/auth.html)
|
|
* [chloride](https://github.com/dominictarr/chloride) - unified API for various NaCl modules
|
|
|
|
|
|
Who uses it
|
|
-----------
|
|
|
|
Some notable users of TweetNaCl.js:
|
|
|
|
* [miniLock](http://minilock.io/)
|
|
* [Stellar](https://www.stellar.org/)
|
|
|