Data class define and alter panels for TS1120

A data class is a set of data set allocation attributes and associated values. You can define, alter, display, and list a data class by using the ISMF data class panels. In addition to the previously available values, you can now specify the EE2 value for the recording technology attribute EEFMT2 on the data class define/alter panel. A new panel is displayed for the user to enter the Key Labels and Encoding Mechanisms. The existing Performance Scaling and Performance Segmentation data class options, applicable with MEDIA5 and MEDIA9, can also be used with the new encryption format EEFMT2.

Key specification terminology:

Key Label

Specifies the label for the key encrypting key used by the Encryption Key Manager. The key encrypting key is used to encrypt the data (encryption) key.

The key label value can be specified up to 64 characters containing alphanumeric, national or special characters with some additional characters also being allowed. It is treated as a free form field on input and validity checked by the control unit when the key label is first used and converted from EBCDIC to ASCII. The characters specified through ISMF must map to ASCII characters X'20' to X'7E'.

Encoding Mechanism

Specifies how the label for the key encrypting key specified by the key label (input) is encoded by the Encryption Key Manager and stored on the tape cartridge.

L = encoded as the specified label
H = encoded as a hash of the public key