passman/js/app/services/encryptservice.js

(function () {
	'use strict';
	/**
	 * @ngdoc service
	 * @name passmanApp.EncryptService
	 * @description
	 * # EncryptService
	 * Service in the passmanApp.
	 */
	angular.module('passmanApp')
		.service('EncryptService', ['VaultService', function (VaultService) {
			// AngularJS will instantiate a singleton by calling "new" on this function
			var encryption_config = {
				adata: "",
				iter: 1000,
				ks: 256,
				mode: 'ccm',
				ts: 64
			};

			return {
				encryptString: function (string, _key) {
					if (!_key) {
						_key = VaultService.getActiveVault().vaultKey;
					}
					var rp = {};
					var ct = sjcl.encrypt(_key, string, encryption_config, rp);
					return window.btoa(ct);
				},
				decryptString: function (ciphertext, _key) {
					if (!_key) {
						_key = VaultService.getActiveVault().vaultKey;
					}
					ciphertext = window.atob(ciphertext);
					var rp = {};
					try {
						return sjcl.decrypt(_key, ciphertext, encryption_config, rp);
					} catch (e) {
						throw e;
					}
				}

			};
		}]);
}());