string-signer

A node.js cryptographic string signing library.

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Install

Requires

• Node.js >= 0.6.x
• npm

Node Package Manager

$ npm install git://github.com/crcastle/nodejs-string-signer.git

Github

$ git clone https://github.com/crcastle/nodejs-string-signer.git
$ cd nodejs-string-signer
$ npm install

Use

Create a signature

var stringSigner = require('string-signer');

var message = 'this is an official message. it must not be tampered with!';
var secret = 's3cr3t';

var signature = stringSigner.getSignature(stringToBeSigned, secret);

signature will be a string that is the hex representation of the hmac256 hash of message. You can change this from hex to either binary or base64 within the lib/string-signer.js file. At some point I'll make this a configuration parameter instead of hard-coding it in the file.

Verify a signature

var stringSigner = require('string-signer');

var message = 'this is an official message. it must not be tampered with!';
var signature = 'b0319d11150e57d6dd8894b7d447f1f073e65fe85db1a83221f91dd3d4fecfdb';
var secret = 's3cr3t';

var isValid = stringSigner.isValidSignature(signature, message, secret);

isValid will be either true or false.

Run tests

$ npm test

Issues

Create an issue or make a pull request.

Credit

• Based on nshah's nodejs-signed-request library (Apache licensed)
• Contributions from dcarney

License

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

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 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.

For more information, please refer to http://unlicense.org/