FORMAT-PRESERVING ENCRYPTION METHOD BASED ON FORMAT-PRESERVING COMPONENT

摘要

The present invention is divided into two methods. Firstly, provided is a method for designing a block encryption such as 64-bit, 80-bit, 96-bit, and 112-bit which preserve a specific format by using a component for preserving the specific format, for instance, S-box, matrix, etc. Secondly, provided is a method that is an operation mode, which is how to generate an encryption of the same length having the same characteristics from a message of the random length having the specific format by using the block encryption for preserving the format.;COPYRIGHT KIPO 2016