https://github.com/chjj/supersha

Fast SHA256 for node.js
https://github.com/chjj/supersha

Last synced: 16 days ago
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Fast SHA256 for node.js

• Host: GitHub
• URL: https://github.com/chjj/supersha
• Owner: chjj
• License: other
• Created: 2016-07-16T21:20:12.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2016-07-16T21:38:31.000Z (over 8 years ago)
• Last Synced: 2024-10-20T01:14:53.154Z (24 days ago)
• Language: C
• Size: 8.79 KB
• Stars: 10
• Watchers: 3
• Forks: 2
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# supersha

SHA256 exposed to node.js from Pieter Wuille's [libsecp256k1][secp]. Used in

[bcoin][bcoin].

## Usage

``` js

var supersha = require('supersha');

var data = new Buffer('01020304', 'hex');

var key = new Buffer('05060708', 'hex');

var hash1 = supersha.sha256(data);

var hash2 = supersha.sha256hmac(data, key);

var hash3 = supersha.hash256(data);

console.log('sha256: %s', hash1.toString('hex'));

console.log('sha256 hmac: %s', hash2.toString('hex'));

console.log('double sha256: %s', hash3.toString('hex'));

```

Outputs:

```

sha256: 9f64a747e1b97f131fabb6b447296c9b6f0201e79fb3c5356e6c77e89b6a806a

sha256 hmac: 791ff56c5d7624c816777b13d0621b51f144853a371170e13644d63a77b2596f

double sha256: 8de472e2399610baaa7f84840547cd409434e31f5d3bd71e4d947f283874f9c0

```

## Benchmarks

``` bash

$ node bench.js

crypto.sha256: ops=100000, time=0.555176535, rate=180122.88650

supersha.sha256: ops=100000, time=0.407243698, rate=245553.21664

crypto.hash256: ops=100000, time=0.968488985, rate=103253.62658

supersha.hash256: ops=100000, time=0.482557892, rate=207229.02196

crypto.sha256hmac: ops=100000, time=0.781748435, rate=127918.38848

supersha.sha256hmac: ops=100000, time=0.539863217, rate=185232.10482

```

## License

Copyright (c) 2016, Christopher Jeffrey. (MIT License)

See LICENSE for more info.

[secp]: https://github.com/bitcoin-core/secp256k1

[bcoin]: https://github.com/bcoin-org/bcoin