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Method for generating digital signature and method for verifying digital signature

A digital signature and digital technology, applied in the field of cryptography, can solve the problems of low computational efficiency and incompatibility of the KC-DSA signature method, and achieve the effects of strict security verifiability, flexible application, and optimal computational efficiency

Active Publication Date: 2018-10-30
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, the KC-DSA signature method has problems such as low computational efficiency and incompatibility with other standard algorithms

Method used

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  • Method for generating digital signature and method for verifying digital signature
  • Method for generating digital signature and method for verifying digital signature
  • Method for generating digital signature and method for verifying digital signature

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Embodiment Construction

[0061]The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0062] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0063] In addition, the steps shown in the flow diag...

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Abstract

The invention discloses a method for generating a digital signature and a method for verifying the digital signature. The method for generating the digital signature comprises the steps of for a to-be-signed message m, obtaining a signature variate e based on a first preset transfer function h; according to a random number r and a generating element g, obtaining a signature variate d by combining a second preset transfer function f; and according to a signature private key w, the random number r, the signature variate e and the signature variate d, determining a signature variate z, and generating a digital signature s of the to-be-signed message m according to the signature variate z. The method for generating the digital signature and the method for verifying the digital signature have strict safe verification, have higher calculation efficiency in generating the digital signature, and are more flexible in use.

Description

technical field [0001] The invention relates to the technical field of cryptography, in particular to a method for generating a digital signature and a method for verifying a digital signature. Background technique [0002] Digital signature method is one of the main applications of cryptography. Currently, the mainstream digital signature standards include American DSA signature, Schor signature, and Korean KC-DSA signature. Among them, KC-DSA signature is currently the most efficient digital signature method. [0003] However, the KC-DSA signature method has problems such as low computational efficiency and incompatibility with other standard algorithms. Contents of the invention [0004] In order to solve the above problems, the present invention provides a method for generating a digital signature, the method comprising: [0005] For the information m to be signed, the signature variable e is obtained based on the first preset conversion function h; [0006] Accord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L9/32
CPCH04L9/3247H04L9/3252H04L63/08
Inventor 姚期智赵运磊
Owner TSINGHUA UNIV
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