special computing circuit for realizing Hash operation

Abstract

The invention discloses a special computing circuit for realizing Hash operation. The special computing circuit comprises at least one Hash computing module, The device specifically comprises a variable, a constant input unit, a Hash input unit, a Hash output unit and a Hash calculation unit. Wherein the number of times of iterative operation of the Hash operation is N, and each calculation modulecompletes N times of iterative operation by using N Hash calculation units; Wherein the N hash calculation units are connected through a hardware connecting line, a group of new input data is initially input to the hash calculation unit through the hash input unit in the clock period A of each calculation, and the hash input value of the next hash calculation unit is the hash output value of theprevious hash calculation unit; The number of the N variable input units and the number of the constant input units are correspondingly connected with the N Hash calculation units respectively and used for inputting corresponding variable values and constant values. And a result is output by the Hash output unit after the primary Hash operation is finished. By utilizing the special computing circuit, the power consumption and the cost of the computing circuit can be reduced during Hash operation.

Description

technical field [0001] The invention relates to the field of hash operations, in particular to a special calculation circuit for realizing hash operations. Background technique [0002] Hash (Hash) operation is a commonly used operation that can compress a message of any length into a message digest of a certain fixed length. Commonly used hash algorithms include SHA256, SHA3, SM3, etc. The output of these hash algorithms is 256 bits, and the security is relatively high, which is the current mainstream hash algorithm. Hash operations are used for file verification, digital signatures, authentication protocols, proof of work, etc. [0003] The hash algorithm has a specific purpose, which is to calculate the hash value of an input message of a certain length and check whether a specific output bit of the hash value is equal to a fixed value, such as whether the first 32 bits of the hash value are equal to all 0 or All 1, or whether it is equal to 0x12345678, etc. The charac...

AI Technical Summary

Problems solved by technology

But the disadvantage of this circuit structure is that the power consumption is still relatively high

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