This control provides methods for encryption and decryption.
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() |
The code samples available from the IDE include a Security Encryption sample which demonstrates the use of this control.
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.
//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 ); }