The present invention provides a device for securing data communication, said device being part of a system and comprising a dynamically reconfigurable logic array comprising separate blocks for algorithms needed for carrying out an application by the use of said device; a common memory means for storing configuration bitstreams, wherein each of said configuration bitstreams corresponds to a block; a configuration memory means for storing configuration bitstreams currently needed to configure said logic array; and a processing means for controlling a reconfiguration of said logic array and for configuring needed blocks into said logic array by use of said configuration bitstreams, said processing means being capable of communicating with other devices of said system.