Added encrypting/decrypting numbers.

petersirka · petersirka · commit 37c25f94cb2a · 2018-07-13T10:04:26.000+02:00
diff --git a/changes.txt b/changes.txt
@@ -95,6 +95,9 @@
 - added: `SchemaEntity.clear()` for removing all current definition
 - added: new view engine markup `@{#}` for simulating of root URL
 - added: `String.ROOT()` for replacing `@{#}` markup in strings
+- added: `Number.encrypt(key)` for encrypting number values
+- added: `String.decryptnumber(key)` for decrypting of number values
+- added: `F.config['secret-numbers']` as a hidden secret for encrypting/decrypting values
 
 - updated: (IMPORTANT) NoSQL binary divides files to independent directories for 1000 files per directory
 - updated: `GROUP()` by adding a new argument `url_prefix`
diff --git a/index.js b/index.js
@@ -647,6 +647,7 @@ function Framework() {
 		version: '1.0.0',
 		author: '',
 		secret: this.syshash,
+		'secret-numbers': 'numbers',
 
 		'security.txt': 'Contact: mailto:support@totaljs.com\nContact: https://www.totaljs.com/contact/',
 		'etag-version': '',
@@ -8878,6 +8879,7 @@ F.$configure_configs = function(arr, rewrite) {
 
 		switch (name) {
 			case 'secret':
+			case 'secret-numbers':
 				obj[name] = value;
 				break;
 			case 'default-request-length':
diff --git a/utils.js b/utils.js
@@ -3808,7 +3808,7 @@ function checksum(val) {
 	return sum;
 }
 
-String.prototype.encrypt = function(key, isUnique) {
+String.prototype.encrypt = function(key, isUnique, secret) {
 	var str = '0' + this;
 	var data_count = str.length;
 	var key_count = key.length;
@@ -3832,10 +3832,10 @@ String.prototype.encrypt = function(key, isUnique) {
 	for (var i = 0; i < str.length; i++)
 		sum += str.charCodeAt(i);
 
-	return (sum + checksum(F.config.secret + key)) + '-' + str;
+	return (sum + checksum((secret || F.config.secret) + key)) + '-' + str;
 };
 
-String.prototype.decrypt = function(key) {
+String.prototype.decrypt = function(key, secret) {
 
 	var index = this.indexOf('-');
 	if (index === -1)
@@ -3846,7 +3846,7 @@ String.prototype.decrypt = function(key) {
 		return null;
 
 	var hash = this.substring(index + 1);
-	var sum = checksum(F.config.secret + key);
+	var sum = checksum((secret || F.config.secret) + key);
 	for (var i = 0; i < hash.length; i++)
 		sum += hash.charCodeAt(i);
 
@@ -3879,6 +3879,19 @@ String.prototype.decrypt = function(key) {
 	return counter !== (val.length + key.length) ? null : val;
 };
 
+String.prototype.decryptnumber = function(salt) {
+	var val = this.decrypt(salt, F.config['secret-numbers']);
+	var num = 0;
+	if (val) {
+		num = +val;
+		if (isNaN(num))
+			return 0;
+		for (var i = 0; i < salt.length; i++)
+			num -= salt.charCodeAt(i);
+	}
+	return num;
+};
+
 String.prototype.base64ToFile = function(filename, callback) {
 	var self = this;
 	var index = self.indexOf(',');
@@ -4061,6 +4074,13 @@ String.prototype.removeTags = function() {
 	return this.replace(regexpTags, '');
 };
 
+Number.prototype.encrypt = function(salt) {
+	var num = this;
+	for (var i = 0; i < salt.length; i++)
+		num += salt.charCodeAt(i);
+	return num.toString().encrypt(salt, false, F.config['secret-numbers']);
+};
+
 Number.prototype.floor = function(decimals) {
 	return Math.floor(this * Math.pow(10, decimals)) / Math.pow(10, decimals);
 };
