Encrypt and Decrypt Scripts

To add a basic level of protection to scripts, you can encrypt it so only someone who knows the password can view it; you can also require a password to run it. This is useful in situations when you want to implement controlled sharing of a script.

To encrypt a script:

1.	Open the script that you want to encrypt.

2.	Select Edit > Encrypt Script.

3.	Enter a decrypt password so that the user needs a password to view the script.

4.	(Optional) Enter a run password to require the user to enter a password before running the encrypted script.

Note: The passwords must consist of single-byte characters; using a text Input Method Editor (IME) does not work.

Click OK.

6.	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 window. For example:

//-e6.0.2

S@FTQ;VGMUTF?J<;LS;B<=IRLXCU=BV;@NS<TW;LR<ZFOP=JJS>NNDA@T<V><DZA>SU@MG;LR<ZFOP=JJS>NNDA@T<V><DZA>SU@MG;LR<ZFOP=JJS>NNDA@T<V><DZA>SU@MG;LR<ZFOP=JJS>NNDA@T<HNIZ;WDN?RMJ;FR>KYAXTEPPF?;XFJJOP=RQGBIAGXOYNNZ>PLIF>SW>L>ACL<KGP;=QQTCEG??U<PUXLV?TRBO?J>QGWTJCFJA@BNHWLVORNNGQYPIKL<IM<>JX>@G?LJ>=;RBODH@PTKK@SIUE;IJOR<TUTRMTGSYRSVGOR<XK<F=IWQYE=LVZFP;AUHA?YJLL;EIT?ZJZC;*

7.	Save the encrypted script.

To decrypt a JSL script:

1.	Open the encrypted script in JMP.

2.	Select Edit > Decrypt Script.

3.	Enter the decrypt password and click OK.

The decrypted script opens in a new window.

To run an encrypted JSL script:

Note: You must know which data table the script runs on before running an encrypted script. If you do not know the name of the data table, you must decrypt the script before running it.

1.	Open the encrypted script in JMP.

2.	Select Edit > Run Script.

3.	Enter the run password and click OK.

The script runs:

‒	If the script references a data table, you are prompted to open the data table, and then the script runs.

‒	If the script requires an empty data table, you must create the table and then run the encrypted script.

Note that entering the run password runs the script, but does not show the script: you must supply the decrypt password to actually view the script.

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:

// 2 Global (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.

Example of an Encrypted Data Table Script