Scripting Guide - SAS

Chapter 8 Programming Methods 223
Encrypt and Decrypt Scripts
Encryption and Global Variables
Encryption alone does not hide global variables and their values. A Show Globals() command displays
them normally. If you want to hide global variables in an encrypted script, you can give them special names.
Any global variable whose name begins with two underscore characters (__) is hidden, and Show
Globals() displays neither its name nor its value. For example:
myvar = 2;
__myvar = 5;
Show Symbols();
//Globals
myvar = 2;
// 2 Globals (1 Hidden)
This strategy works whether your script is encrypted or not.
Encrypting Scripts in Data Tables
You can also encrypt a script that is saved to a data table using the JSL Encrypted() or Include( Char
to Blob() ) functions.
• JSL Encrypted() is more straightforward, because it involves one function. You can include
comments inside the encrypted script.
• Include( Char to Blob() ) lets you include comments, but not inside the script.
Follow these steps to encrypt a data table script:
1. Place the script in a script window.
You cannot directly encrypt a script that is already saved to a data table.
2. In the script window, select Edit > Encrypt.
3. Enter a decrypt password.
4. (Optional) Enter a run password to require the user to enter a password before running the script.
5. If you entered only a decrypt password, click Yes to confirm that you do not want to assign a run
password.
The encrypted script opens in a new script window.
6. Copy the entire encrypted script.
7. Create a new data table script or open an existing script.
8. In the script portion of the window, type one of the following functions:
JSL Encrypted( "" );
Include( Char to Blob( "" ) );
9. Paste the encrypted script inside the quotation marks in the function.
10. Click OK.