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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 pre vent
its unauthorized use. To do this, you select an extra option when saving, and add a password to the
item being saved. This encryption 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 between
IBM® SPSS® Modeler and IBM® SPSS® Modeler Server.
When you try to open an encrypted item, you are prompted to enter the password. Aft er you
enter the correct password, the item is decrypted automatically and opens as usual.
ToEncrypt an Item
EIn the Save dialog box, for the item to be encrypted, click Options. The Encryption Options
dialog box opens.
Figure 5-42
Encryption options when saving a file
ESelect Encrypt this file.
EOptionally, for further security, select Mask password. This displays anythi ng you enter as a
series of dots.
EEnter the password. Warning: If you forget the pa ssword, the file or model cannot be opened.
EIf you selected Mask password, re-enter the password to confirm that you entered it correctly.
EClick OK to return to the Save dialog box.
Note: If you save a copy of any encryption-protected item, the new item is automat ically saved in
an encrypted format using the original password unless you change the settings in the Encryption
Options dialog box.
Loading Files
Youcan reload a number of saved o bjects in IBM® SPSS® Modeler:
Streams (.str)
States (.cst)
Models (.gm)