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Blind signature method and a blind signature system

A blind signature and algorithm technology, applied in the field of busy signature, can solve the problem of low efficiency of blind signature, and achieve the effect of saving calculation time, relieving pressure and high efficiency

Active Publication Date: 2016-06-15
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the related technology, the signing authority performs blind signatures one by one, resulting in low efficiency of blind signatures

Method used

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  • Blind signature method and a blind signature system
  • Blind signature method and a blind signature system
  • Blind signature method and a blind signature system

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0024] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The invention discloses a blind signature method and a blind signature system. The method comprises the steps of selecting prime numbers p and q, and outputting a group Zp* with the order of the prime number q; randomly selecting two generators g1 and g2 in the group Zp*, and three random elements s1, s2 and t in a domain Zq; working out v according to a FORMULA; according to the information amount of signatures, selecting the size n of a batch; and working out n cryptographs through interactively using parallel batch processing index computation products by a client and a blind singer; and verifying the signatures in batches. The blind signature method has the advantages as follows compared with the general batch processing index computation product, about 25% computation quantity is saved, thus the computational pressure is effectively relieved; and during the verifying process, the n signatures are simultaneously verified by a batch verifying method, the computation time is effectively saved, only about 70% of the time of the general method is needed, and the efficiency is high.

Description

technical field [0001] The invention relates to the field of busy signatures, in particular to a blind signature method and a blind signature system. Background technique [0002] With the development of e-commerce, more and more electronic transactions are completed online, and the amount of data that needs to be processed is very large. This is an extremely heavy pressure on the signer, and it is also a very big test for the user's patience. . Therefore, to ensure the verifiability and non-repudiation of digital information, blind signature is an effective tool. Blind signatures can not only protect user information, but also ensure data verifiability, and are the most commonly used tools in electronic transactions. [0003] However, in the related technology, the signing institutions perform blind signatures one by one, resulting in low efficiency of blind signatures. Contents of the invention [0004] The present invention aims to solve at least one of the above-men...

Claims

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Application Information

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IPC IPC(8): H04L9/32G06Q20/38
CPCG06Q20/3825H04L9/3257
Inventor 伍前红孙洋陶芮刘建伟
Owner BEIHANG UNIV
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