|
Command: |
This command verifies the 5-digit, 4-digit and 3-digit Card Security Code. |
|
Field |
Length & Type |
Details |
|
COMMAND MESSAGE |
||
|
Message Header |
m A |
(Subsequently returned to the Host unchanged). |
|
Command Code |
2 A |
Value RY |
|
Mode |
1 N |
Value 4 |
|
Flag |
1 N |
A flag to indicate special processing options; value 0. |
|
*CSCK |
32H or 1A+32H |
The *CSCK encrypted under LMK 14-15 variant 4. |
|
Account number |
19 N |
The full account number, left-justified and zero-filled if less than 19 digits. |
|
Expiration date |
4 N |
The expiration date in YYMM format. |
|
5-digit CSC |
5 N |
5-digit Card Security code. If not present value FFFFF |
|
4-digit CSC |
4 N |
4-digit Card Security code. If not present value FFFF |
|
3-digit CSC |
3 N |
3-digit Card Security code. If not present value FFF |
|
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 RZ |
|
Error Code |
2 N |
00 : No error 01 : Card security code verification failure 10 : *CSCK parity error 12 : No keys in user storage 13 : LMK parity error 15 : Error in input data 21 : Invalid user storage index 27 : *CSCK not double length |
|
Mode |
1 N |
Value 4 |
|
5-digit CSC verification |
1 N |
0 if pass. 1 if not present. 2 if verification failed. |
|
4-digit CSC verification |
1 N |
0 if pass. 1 if not present. 2 if verification failed. |
|
3-digit CSC verification |
1 N |
0 if pass. 1 if not present. 2 if verification failed. |
|
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 |