File: connected-users-websocket/node_modules/express/node_modules/cookie-signature/index.js

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File: connected-users-websocket/node_modules/express/node_modules/cookie-signature/index.js
Role: Example script
Content type: text/plain
Description: Example script
Class: Terminal Crossword
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Date: 2 years ago
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/** * Module dependencies. */ var crypto = require('crypto'); /** * Sign the given `val` with `secret`. * * @param {String} val * @param {String} secret * @return {String} * @api private */ exports.sign = function(val, secret){ if ('string' != typeof val) throw new TypeError('cookie required'); if ('string' != typeof secret) throw new TypeError('secret required'); return val + '.' + crypto .createHmac('sha256', secret) .update(val) .digest('base64') .replace(/\=+$/, ''); }; /** * Unsign and decode the given `val` with `secret`, * returning `false` if the signature is invalid. * * @param {String} val * @param {String} secret * @return {String|Boolean} * @api private */ exports.unsign = function(val, secret){ if ('string' != typeof val) throw new TypeError('cookie required'); if ('string' != typeof secret) throw new TypeError('secret required'); var str = val.slice(0, val.lastIndexOf('.')); return exports.sign(str, secret) == val ? str : false; };