Card & EMV

payShield KQ — Verify ARQC / Generate ARPC (Static/MChip SKD)

answers with KR

Verify an ARQC and/or generate the ARPC using the Mastercard M/Chip proprietary derivation (scheme 1) — the ARPC is computed under the ICC master key

Fields

Field	What it holds
Scheme ID1 chars	KW: 0/1 EMV2000, 2/3 EMV Common SK · KQ: 1 M/Chip
Mode1 chars	0 verify · 1 verify+ARPC(M1) · 2 ARPC(M1) · 3 verify+ARPC(M2) · 4 ARPC(M2)
MK-AC under LMK32 or 97 or 129 chars	S… key block (97/129 chars), or 32 hex under a variant LMK
PAN	12-19 digit card number
PAN Sequence Number2 chars	00
ATC (HEX)4 chars	4 hex chars (2 bytes)
Transaction Data (HEX)	Concatenated EMV transaction data in hex (host adds any 0x80 padding)
ARQC (HEX)16 chars	16 hex chars (8 bytes)
ARC (HEX)4 chars	4 hex chars (2 bytes) — Method 1 ARPC

On the wire

Complete host messages. Each runs against the KeyLab simulator as printed. The header is four zeros here; the device echoes back whatever you send.

Verify ARQC / Generate ARPC (Static/MChip SKD)

0000KQ11S10096E0TN00N000093958BE965930B976EBAD02EF36855DF83CD58DE241264CA230A93427E7C9EB32515846EB1458B6843219876543210000001000000002500000000100000000000000007100000000000071013020500000000003C00000103A4A082;6F49780802445A8F0000

4-char headercommand224 chars of fields

Send KQ to the simulator

Opens the simulator with this command already filled in.