A system includes programmable systolic cryptographic modules for security processing of packets from a data source. A first programmable input/output interface routes each incoming packet to one of the systolic cryptographic modules for encryption processing. A second programmable input/output interface routes the encrypted packets from the one systolic cryptographic module to a common data storage. In one embodiment, the first programmable input/output interface is coupled to an interchangeable physical interface that receives the incoming packets from the data source. In another embodiment, each cryptographic module includes a programmable systolic packet input engine, a programmable cryptographic engine, and a programmable systolic packet output engine, each configured as a systolic array (e.g., using FPGAs) for data processing.