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Contents
// Copyright 2011 Joyent, Inc. All rights reserved.
var assert = require('assert-plus');
var crypto = require('crypto');
///--- Exported API
module.exports = {
/**
* Simply wraps up the node crypto operations for you, and returns
* true or false. You are expected to pass in an object that was
* returned from `parse()`.
*
* @param {Object} parsedSignature the object you got from `parse`.
* @param {String} key either an RSA private key PEM or HMAC secret.
* @return {Boolean} true if valid, false otherwise.
* @throws {TypeError} if you pass in bad arguments.
*/
verifySignature: function verifySignature(parsedSignature, key) {
assert.object(parsedSignature, 'parsedSignature');
assert.string(key, 'key');
var alg = parsedSignature.algorithm.match(/(HMAC|RSA|DSA)-(\w+)/);
if (!alg || alg.length !== 3)
throw new TypeError('parsedSignature: unsupported algorithm ' +
parsedSignature.algorithm);
if (alg[1] === 'HMAC') {
var hmac = crypto.createHmac(alg[2].toUpperCase(), key);
hmac.update(parsedSignature.signingString);
return (hmac.digest('base64') === parsedSignature.params.signature);
} else {
var verify = crypto.createVerify(alg[0]);
verify.update(parsedSignature.signingString);
return verify.verify(key, parsedSignature.params.signature, 'base64');
}
}
};
Version data entries
101 entries across 87 versions & 6 rubygems