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+# sha
+
+Check and get file hashes (using any algorithm)
+
+[![Build Status](https://img.shields.io/travis/ForbesLindesay/sha/master.svg)](https://travis-ci.org/ForbesLindesay/sha)
+[![Dependency Status](https://img.shields.io/gemnasium/ForbesLindesay/sha.svg)](https://gemnasium.com/ForbesLindesay/sha)
+[![NPM version](https://img.shields.io/npm/v/sha.svg)](http://badge.fury.io/js/sha)
+
+## Installation
+
+    $ npm install sha
+
+## API
+
+### check(fileName, expected, [options,] cb) / checkSync(filename, expected, [options])
+
+Asynchronously check that `fileName` has a "hash" of `expected`.  The callback will be called with either `null` or an error (indicating that they did not match).
+
+Options:
+
+- algorithm: defaults to `sha1` and can be any of the algorithms supported by `crypto.createHash`
+
+### get(fileName, [options,] cb) / getSync(filename, [options])
+
+Asynchronously get the "hash" of `fileName`.  The callback will be called with an optional `error` object and the (lower cased) hex digest of the hash.
+
+Options:
+
+- algorithm: defaults to `sha1` and can be any of the algorithms supported by `crypto.createHash`
+
+### stream(expected, [options])
+
+Check the hash of a stream without ever buffering it.  This is a pass through stream so you can do things like:
+
+```js
+fs.createReadStream('src')
+  .pipe(sha.stream('expected'))
+  .pipe(fs.createWriteStream('dest'))
+```
+
+`dest` will be a complete copy of `src` and an error will be emitted if the hash did not match `'expected'`.
+
+Options:
+
+- algorithm: defaults to `sha1` and can be any of the algorithms supported by `crypto.createHash`
+
+## License
+
+You may use this software under the BSD or MIT.  Take your pick.  If you want me to release it under another license, open a pull request.
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