README.md•1.1 kB
# buffer-equal-constant-time
Constant-time `Buffer` comparison for node.js. Should work with browserify too.
[](https://travis-ci.org/goinstant/buffer-equal-constant-time)
```sh
npm install buffer-equal-constant-time
```
# Usage
```js
var bufferEq = require('buffer-equal-constant-time');
var a = new Buffer('asdf');
var b = new Buffer('asdf');
if (bufferEq(a,b)) {
// the same!
} else {
// different in at least one byte!
}
```
If you'd like to install an `.equal()` method onto the node.js `Buffer` and
`SlowBuffer` prototypes:
```js
require('buffer-equal-constant-time').install();
var a = new Buffer('asdf');
var b = new Buffer('asdf');
if (a.equal(b)) {
// the same!
} else {
// different in at least one byte!
}
```
To get rid of the installed `.equal()` method, call `.restore()`:
```js
require('buffer-equal-constant-time').restore();
```
# Legal
© 2013 GoInstant Inc., a salesforce.com company
Licensed under the BSD 3-clause license.