| Step | Process | Output | |------|---------|--------| | 1 | Derive Session Key (UDK from IMK + PAN + CSN) | Session Key: AB... | | 2 | Build ARQC data (ATC + Unpredictable + Amount...) | Data: 0001 1234ABCD 00001000... | | 3 | Compute CMAC or CBC MAC (depending on algorithm) | MAC: 4F2A98C3 | | 4 | Format final ARQC | ARQC: 4F2A98C3 12F1B9A0 |
The tool uses cryptographic algorithms and protocols to combine these inputs and produce a unique ARQC. This ARQC can then be transmitted to the acquiring bank or payment processor as part of the transaction authorization request. arqc-gen.exe
If you are looking for a rigorous "paper-style" look into the mechanics behind this tool, the following resources provide the necessary depth: Secure Contactless Payment (EPFL Research) | Step | Process | Output | |------|---------|--------|
Using these inputs, arqc-gen.exe generates outputs such as: This ARQC can then be transmitted to the
arqc-gen.exe is an executable file associated with the EMV (Europay, Mastercard, and Visa) standard for secure payment transactions. Specifically, it is related to the generation of Authorization Request Cryptograms (ARQC) and other cryptographic functions essential for card transactions. This write-up aims to provide an in-depth understanding of arqc-gen.exe , its functionality, and its significance in the payment processing ecosystem.
If you need ARQC generation but prefer not to use a standalone .exe , consider: