PCSC Operation APDU Interpreter Standard instructions GET CHALLENGE
April 13, 2023 at 2:39 AMGET CHALLENGE instruction
The GET CHALLENGE command requires the issuing of a challenge (e.g. random number) for use in a security related procedure (e.g. EXTERNAL AUTHENTICATE command).
Command format
| Field | Value | Remark |
|---|---|---|
| CLA | FF |
|
| INS | 84 |
|
| P1 | 00 |
other values are RFU |
| P2 | 00 |
other values are RFU |
| Lc | absent | |
| DataIn | absent | |
| Le | XX |
Response
| Field | Value | Remark |
|---|---|---|
| DataOut | Challenge | |
| SW | 9000 on success |
Other values are documented in Status Words |