Arqc_gen.rar

To prevent "replay attacks," a new must be generated for every single transaction:

To build a functional and secure ARQC generation or validation feature, you must implement the four-step cryptographic process defined by . 1. Key Diversification arqc_gen.rar

You cannot use a single master key for every card. You must derive a for each card using: To prevent "replay attacks," a new must be