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