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Chapter 5
Encrypting and Decrypting Information
When you save a stream, node, project, output file, or model nugget, you can encrypt it to prevent
its unauthorized u se. To do this, you select an extra option when saving, and add a password to the
item being saved. This encryp tion can be set for any of the items that you save and adds extra
security to them; it is not the same as the SSL encryption used if you are passing files betw een
IBM® SPSS® Modeler and IBM® SPSS® Modeler Server.
When you try to open an encrypted item, you are prompted to e nter the password. After you
enter the correct password, the item is decrypted automatically and opens as usual.
To Encrypt an Item
E In the Save dialog box, for the item to be encrypted, click Options. The Encr yption Options
dialog box opens.
Figure 5-42
Encryption options when saving a file
E Select Encrypt this file.
E Optionally, for further security, select Mask password. This displays anything you enter as a
series o f dots.
E Enter the password. Warning: If you forget the password, the file or model cannot be opened.
E If you selected Mask password, re-enter the password to confirm that you entered it correctly.
E Click OK to return to the Save dialog box.
Note: If you save a copy of any encryption-protected item, the new item is automatic ally saved in
an en crypted format using the origin al password unless you change the settings in the Encryption
Options dialog box.
Loading Files
You can re load a number of saved objects in IBM® SPSS® Modeler:
Stream s (.str)
States (.cst)
Models (.gm)