You cannot use a single master key for every card. You must derive a for each card using:
Used as diversification data to ensure every card has a unique key. 2. Session Key Generation arqc_gen.rar
Typically uses 3DES or AES depending on the card's profile. 3. Data Preparation (The Payload) EMV-Cryptogram-ARQC-Explained - by Deepthi Mallidi You cannot use a single master key for every card
⚠️ Files with this name found on public forums or file-sharing sites are frequently flagged by security researchers as malware or phishing tools. They often contain "Remote Access Trojans" (RATs) or exploits targeting vulnerabilities in older versions of WinRAR. arqc_gen.rar
The Card's UDK and the Application Transaction Counter (ATC) .
The top-level secret stored in a Hardware Security Module (HSM).