APPARATUS AND METHOD FOR PERFORMING COMPRESSION OPERATION IN HASH ALGORITHM

摘要

Disclosed are an apparatus and a method to perform compression operation in a fast message hash algorithm, which can produce updated 512-bit chain variable data which is the basis of a hash value by receiving an input of a 512-bit message and a 512-bit chain variable data, and repeatedly calculating a 128-bit register-based step function. To achieve this, the apparatus to perform compression operation in a hash algorithm in accordance to the present invention includes: a message extension unit which receives a message input and generates a plurality of extended messages; an initial chain variable converting unit which receives a chain variable data input and converts the chain variable data into an initial state data; a step function operation unit which repeatedly calculates a step function based on the initial state data and the extended messages to produce a final state data; and a final chain variable converting unit which generates chain variable data updated from the chain variable data using the final state data and outputs the updated chain variable data.