Abstract: Systems and methods for the secure processing of electronic transactions are disclosed. In accordance with an exemplary embodiment, a system and method for the secure processing of electronic transactions comprises: receiving, by a POS terminal, information for a financial transaction card; receiving, by the POS terminal, information for a financial transaction; encrypting, by the POS terminal, the financial card information and the financial transaction information into a first encrypted message; transmitting the first encrypted message to a regional chassis; encrypting, by the regional chassis, the first encrypted message into a second encrypted message; transmitting the second encrypted message to a central chassis; decrypting, by the central chassis, the second encrypted message into a decrypted message; and transmitting the decrypted message to a host processor for authorization.