Abstract: Embodiments of a system (such as a computer system), a method, and a computer-program product (e.g., software) for use with the computer system are described. These embodiments may be used to perform financial transactions over a network. In particular, the system allows customers to use personal PIN pads when conducting financial transactions (such as debit-card transactions) with multiple merchants and their associated acquirer processors (which assist the merchants in processing financial transactions), even though different groups of merchants and acquirer processors may use different encryption techniques. For a given financial transaction, this capability may be implemented by decrypting financial information associated with a personal PIN pad from a customer and re-encrypting it using a separate encryption technique of a merchant and the associated acquirer processor.