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--- built_in:crypt [2015/10/03 17:07]
stevegarman [Password check]
+++ built_in:crypt [2017/07/01 14:27]
@@ Line 1: / Line 1: @@
-====== Crypt control ======
-This control provides methods for encryption and decryption.
-===== Methods =====
-Some controls use the same methods.\\
-For examples of the **[[same methods]]** look here.
-^ Method                          ^ Description  ^
-| Crypt.Decrypt( text,password )  |              |
-| Crypt.Encrypt( text,password )  |              |
-| Crypt.GetType()                 |              |
-| Crypt.Hash( text,mode )         |              |
-| Crypt.Release()                 |              |
-===== Sample code =====
-The code samples available from the IDE include a Security Encryption sample which demonstrates the use of this control.
-==== Password check ====
-The following code demonstrates the use of an md5 hash to check a password.
-The first time a password is entered, its hash is saved. Every subsequent time, the password's hash is compared against the saved version.
-If it does not match, the app does not continue.
-<code JavaScript md5.js>
-//Called when application is started.
-function OnStart()
-{
-    var chk = app.LoadText("hash","unset");
-    var pass = prompt("Please enter password","");
-    if (pass==null) app.Exit();
-    var crypt = app.CreateCrypt();
-    var md5 = crypt.Hash( pass, "MD5" );
-    md5 = md5.substr(0,22);
-    if (chk == "unset") app.SaveText("hash", md5)
-    else if(chk != md5)
-    {
-        app.ShowPopup("Incorrect password");
-        app.Exit();
-    }
-    //Create a layout with objects vertically centered.
-    lay = app.CreateLayout( "linear", "VCenter,FillXY" );
-    //Create a text label and add it to layout.
-    txt = app.CreateText( "Welcome" );
-    txt.SetTextSize( 32 );
-    lay.AddChild( txt );
-    //Add layout to app.
-    app.AddLayout( lay );
-}
-</code>

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