mirror of
https://github.com/titanscouting/tra-analysis.git
synced 2024-11-13 22:56:18 +00:00
146 lines
5.0 KiB
Markdown
146 lines
5.0 KiB
Markdown
# node-jwa [](https://travis-ci.org/brianloveswords/node-jwa)
|
|
|
|
A
|
|
[JSON Web Algorithms](http://tools.ietf.org/id/draft-ietf-jose-json-web-algorithms-08.html)
|
|
implementation focusing (exclusively, at this point) on the algorithms necessary for
|
|
[JSON Web Signatures](http://self-issued.info/docs/draft-ietf-jose-json-web-signature.html).
|
|
|
|
This library supports all of the required, recommended and optional cryptographic algorithms for JWS:
|
|
|
|
alg Parameter Value | Digital Signature or MAC Algorithm
|
|
----------------|----------------------------
|
|
HS256 | HMAC using SHA-256 hash algorithm
|
|
HS384 | HMAC using SHA-384 hash algorithm
|
|
HS512 | HMAC using SHA-512 hash algorithm
|
|
RS256 | RSASSA using SHA-256 hash algorithm
|
|
RS384 | RSASSA using SHA-384 hash algorithm
|
|
RS512 | RSASSA using SHA-512 hash algorithm
|
|
ES256 | ECDSA using P-256 curve and SHA-256 hash algorithm
|
|
ES384 | ECDSA using P-384 curve and SHA-384 hash algorithm
|
|
ES512 | ECDSA using P-521 curve and SHA-512 hash algorithm
|
|
none | No digital signature or MAC value included
|
|
|
|
# Requirements
|
|
|
|
In order to run the tests, a recent version of OpenSSL is
|
|
required. **The version that comes with OS X (OpenSSL 0.9.8r 8 Feb
|
|
2011) is not recent enough**, as it does not fully support ECDSA
|
|
keys. You'll need to use a version > 1.0.0; I tested with OpenSSL 1.0.1c 10 May 2012.
|
|
|
|
# Testing
|
|
|
|
To run the tests, do
|
|
|
|
```bash
|
|
$ npm test
|
|
```
|
|
|
|
This will generate a bunch of keypairs to use in testing. If you want to
|
|
generate new keypairs, do `make clean` before running `npm test` again.
|
|
|
|
## Methodology
|
|
|
|
I spawn `openssl dgst -sign` to test OpenSSL sign → JS verify and
|
|
`openssl dgst -verify` to test JS sign → OpenSSL verify for each of the
|
|
RSA and ECDSA algorithms.
|
|
|
|
# Usage
|
|
|
|
## jwa(algorithm)
|
|
|
|
Creates a new `jwa` object with `sign` and `verify` methods for the
|
|
algorithm. Valid values for algorithm can be found in the table above
|
|
(`'HS256'`, `'HS384'`, etc) and are case-insensitive. Passing an invalid
|
|
algorithm value will throw a `TypeError`.
|
|
|
|
|
|
## jwa#sign(input, secretOrPrivateKey)
|
|
|
|
Sign some input with either a secret for HMAC algorithms, or a private
|
|
key for RSA and ECDSA algorithms.
|
|
|
|
If input is not already a string or buffer, `JSON.stringify` will be
|
|
called on it to attempt to coerce it.
|
|
|
|
For the HMAC algorithm, `secretOrPrivateKey` should be a string or a
|
|
buffer. For ECDSA and RSA, the value should be a string representing a
|
|
PEM encoded **private** key.
|
|
|
|
Output [base64url](http://en.wikipedia.org/wiki/Base64#URL_applications)
|
|
formatted. This is for convenience as JWS expects the signature in this
|
|
format. If your application needs the output in a different format,
|
|
[please open an issue](https://github.com/brianloveswords/node-jwa/issues). In
|
|
the meantime, you can use
|
|
[brianloveswords/base64url](https://github.com/brianloveswords/base64url)
|
|
to decode the signature.
|
|
|
|
As of nodejs *v0.11.8*, SPKAC support was introduce. If your nodeJs
|
|
version satisfies, then you can pass an object `{ key: '..', passphrase: '...' }`
|
|
|
|
|
|
## jwa#verify(input, signature, secretOrPublicKey)
|
|
|
|
Verify a signature. Returns `true` or `false`.
|
|
|
|
`signature` should be a base64url encoded string.
|
|
|
|
For the HMAC algorithm, `secretOrPublicKey` should be a string or a
|
|
buffer. For ECDSA and RSA, the value should be a string represented a
|
|
PEM encoded **public** key.
|
|
|
|
|
|
# Example
|
|
|
|
HMAC
|
|
```js
|
|
const jwa = require('jwa');
|
|
|
|
const hmac = jwa('HS256');
|
|
const input = 'super important stuff';
|
|
const secret = 'shhhhhh';
|
|
|
|
const signature = hmac.sign(input, secret);
|
|
hmac.verify(input, signature, secret) // === true
|
|
hmac.verify(input, signature, 'trickery!') // === false
|
|
```
|
|
|
|
With keys
|
|
```js
|
|
const fs = require('fs');
|
|
const jwa = require('jwa');
|
|
const privateKey = fs.readFileSync(__dirname + '/ecdsa-p521-private.pem');
|
|
const publicKey = fs.readFileSync(__dirname + '/ecdsa-p521-public.pem');
|
|
|
|
const ecdsa = jwa('ES512');
|
|
const input = 'very important stuff';
|
|
|
|
const signature = ecdsa.sign(input, privateKey);
|
|
ecdsa.verify(input, signature, publicKey) // === true
|
|
```
|
|
## License
|
|
|
|
MIT
|
|
|
|
```
|
|
Copyright (c) 2013 Brian J. Brennan
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a
|
|
copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included
|
|
in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
```
|