Key encode 1 specification - Key = '8025'

DALKYC1 specifies the encoding of 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.

When you code DALKYC1, # must be 1, LEN must be 1, and PARM contains one of the following values:
L(X'03')
Indicates that the key label 1 is to be stored as part of the EEDK structure on the tape cartridge.
H(X'08')
Indicates that a hash of the public key referenced by key label 1 is to be stored on the cartridge rather than the key label.
You must also include the DALKYL1 text unit.

Code the DALKYC1 text unit when you want to specify the encoding for the label for the key encrypting key used by the encryption key manager. For complete documentation on using tape encryption, see z/OS DFSMS Software Support for IBM System Storage TS1140, TS1130, and TS1120 Tape Drives (3592).

Example: To specify a key encode 1 of "L", code:
KEY    #     LEN   PARM
8025   0001  0001  D3