Translate a TAK from LMK to TMK Encryption

Command:

Translate a TAK from encryption under the LMK to encryption under a TMK. Used to send a key to a terminal.

Field

Length & Type

Details

COMMAND MESSAGE

Message header

m A

(Subsequently returned to the Host unchanged).

Command code

2 A

Value AG.

TMK

16H or
1A+32H or 1A+48H

TMK encrypted under the LMK pair 14-15.

TAK

16H or
1A+32H or 1A+48H

TAK encrypted under LMK pair 16-17.

Delimiter

1 A

Optional. If present the following three fields must be present.  Value “;”.

If an option is not required by the command fill with a valid value or 0.

Key scheme TMK

1 A

Optional. Key scheme for encrypting key under TMK.

Reserved

1 A

Optional. If present must be 0.

Reserved

1 A

Optional. If present must be 0.

End message delimiter

1 C

Optional. Must be present if a message trailer is present. Value X’19.

Message trailer

n A

Optional. Maximum length 32 characters.

 RESPONSE MESSAGE

Message header

m A

Returned to the Host unchanged.

Response code

2 A

Value AH.

Error code

2 N

00 : No errors

10 : TMK parity error

11 : TAK parity error

12 : No keys loaded in user storage

13 : LMK error; report to supervisor

15 : Error in input data

21 : Invalid user storage index

TAK

16H or
1A+32H or 1A+48H

Translated TAK; encrypted under the TMK.

End message delimiter

1 C

Present only if present in the command message. Value X’19.

Message trailer

n A

Present only if present in the command message. Maximum length 32 characters.