diff --git a/Jenkinsfile b/Jenkinsfile
index 83fe0ed..83a1015 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -11,7 +11,7 @@ pipeline {
       steps {
       /* calcolo numero versione... diverso x branch MASTER/DEVELOP */
       script {
-        withEnv(['NEXT_BUILD_NUMBER=672']) {
+        withEnv(['NEXT_BUILD_NUMBER=673']) {
           // env.versionNumber = VersionNumber(versionNumberString : '3.3.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2006-01-01', skipFailedBuilds: true)
           env.versionNumber = VersionNumber(versionNumberString : '3.3.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2006-01-01', skipFailedBuilds: true, overrideBuildsAllTime: '${NEXT_BUILD_NUMBER}')
           env.versionNumberBeta = VersionNumber(versionNumberString : '3.3.${BUILD_DATE_FORMATTED, "yyMM"}-beta.${BUILDS_ALL_TIME}', projectStartDate : '2006-01-01', skipFailedBuilds: true, overrideBuildsAllTime: '${NEXT_BUILD_NUMBER}')
diff --git a/SteamWareLib/devicesAuthProxy.cs b/SteamWareLib/devicesAuthProxy.cs
index 25eb034..322cc03 100644
--- a/SteamWareLib/devicesAuthProxy.cs
+++ b/SteamWareLib/devicesAuthProxy.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text;
 using System.Web;
 
 namespace SteamWare
@@ -381,6 +382,26 @@ namespace SteamWare
       // ritorno
       return numAuth;
     }
+    /// <summary>
+    /// Generazione stringa casuale di caratteri...
+    /// </summary>
+    /// <param name="size"></param>
+    /// <param name="lowerCase"></param>
+    /// <returns></returns>
+    public static string RandomString(int size, bool lowerCase)
+    {
+      StringBuilder builder = new StringBuilder();
+      Random random = new Random();
+      char ch;
+      for (int i = 0; i < size; i++)
+      {
+        ch = Convert.ToChar(Convert.ToInt32(Math.Floor(26 * random.NextDouble() + 65)));
+        builder.Append(ch);
+      }
+      if (lowerCase)
+        return builder.ToString().ToLower();
+      return builder.ToString();
+    }
 
     #endregion