Encryption device, includes first encryption unit for sending second encryption key to second encryption unit with output for encrypted text

摘要

The device includes a second encryption unit (910) with an input (901) for non-encrypted text, an input (903) for a second encryption key, and an output (902) for encrypted text. The input for the second encryption key links this second device to the data output in the first encryption unit (930). Independent claims are also included for (a) a similar device in which the first encryption unit includes a data memory, devices for updating the memory with inputted information, an instruction table for operations to be carried out on the memory contents, a processor for executing the operations, and a device for extracting information from the memory, (b) data encryption methods using these devices, and (c) software program products for use in these encryption systems.