Generate a CVK Pair

Command:

Generate a VISA CVK pair. Output the key pair encrypted under a variant of LMK pair 14-15.

Field

Length & Type

Details

COMMAND MESSAGE

Message header

m A

(Subsequently returned to the Host unchanged).

Command code

2 A

Value AS.

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 ZMK

1 A

Optional. If present must be 0.

Key scheme LMK

1 A

Optional. If present must be 0 or U.

Key check value type

1 A

Optional. Key check value calculation method

0 - KCV backwards compatible.  Not available for keys generated using new schemes

1 - KCV 6H.

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

n A

Returned to the Host unchanged.

Response code

2 A

Value AT.

Error code

2 N

00 : No errors

13 : LMK error; report to supervisor

15 : Error in input data

CVK Key scheme = 0 or not specified

CVK A

16 H

CVK A encrypted under variant 4 of LMK pair 14-15.

CVK B

16 H

CVK B encrypted under variant 4 of LMK pair 14-15.

CVK Key scheme not 0

CVK A/B

1A + 32H

CVK A/B encrypted under variant 4 of LMK pair 14-15.

KCV Type = 0 or not specified

CVK A check value

6 H

The CVK A check value.

CVK B check value

6 H

The CVK B check value.

For KCV Type =1

CVK A/B check value

6 H

The CVK A/B check value

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.