Merge branch 'mirafun-master-patch-74854' into 'master'

#30 export Signature class

See merge request !32

doc/README.md

@@ -2289,6 +2289,11 @@ hive.auth.wifToPublic(privWif);
 hive.auth.signTransaction(trx, keys);
 ```
 
+### Sign a message
+```js
+hive.auth.signMessage(message, privateKey)
+```
+
 # Formatter
 
 ### Amount

package.json

 {
   "name": "@hiveio/hive-js",
-  "version": "2.0.6",
+  "version": "2.0.7",
   "description": "Hive.js the JavaScript API for Hive blockchain",
   "main": "lib/index.js",
   "scripts": {

src/auth/index.js

@@ -98,9 +98,13 @@ Auth.wifToPublic = function (privWif) {
 	return pubWif;
 };
 
-Auth.isPubkey = function(pubkey, address_prefix) {
+Auth.isPubkey = function (pubkey, address_prefix) {
 	return PublicKey.fromString(pubkey, address_prefix) != null
-}
+};
+
+Auth.signMessage = function (msg, privWif) {
+	return Signature.sign(msg, privWif).toHex();
+};
 
 Auth.signTransaction = function (trx, keys) {
 	var signatures = [];