Method for realizing of Hach coprocessor

Abstract

The invention provides a realizing method for a grouping hash coprocessor, which belongs to the field of information security password and can realize data encrypting calculation and participate in signature verification. The grouping hash coprocessor realized by using the method supports a grouping password system and HASH calculation, supports high and low speed data interfaces and a pipeline structure, can realize the functions of single grouping, single hash, first grouping then hash and simultaneous grouping and hash, etc., and has better practicability. The hardware parts used for realizing the functions include a grouping calculation unit, a hash calculation unit, a low speed data interface reading and writing control unit, a high speed data interface treatment unit (consisting of an input FIFO1 and an output FIFO2), a coprocessor core control unit and a double-opening RAM, an interior FIFO3, a command register, a block number register, a parameter register, a grouping input buffer register Inda and a grouping output buffer register Outda, etc.

Description

technical field [0001] The utility model relates to the field of information security ciphers, in particular to the hardware realization of grouping and HASH cipher operation co-processors. Background technique [0002] With the popularization of computer networks, it becomes possible to transmit a large amount of electronic data to all parts of the world through the network. However, in the transmission process of important data with great economic value or related to the fate of the country and the army, any leak or error may cause immeasurable losses. Cryptography is the guarantee and core technology of information security. [0003] Although public key algorithm encryption can solve many problems that cannot be solved by private key algorithm encryption, in the face of an increasingly large amount of data, from a practical point of view, the speed of private key encryption is often many times faster than that of public key. Cryptographic algorithms are still the mainst...

AI Technical Summary

Problems solved by technology

However, in the transmission process of important data with great economic value or related to the fate of the country and the army, any leak or error may cause immeasurable losses

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