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A Blind Signature Generation Method without Certificate and Traceable Blockchain Signature

A traceable, certificate-free technology, applied in the field of information security, to achieve the effect of protecting message content, ensuring privacy, ensuring blindness and untraceability

Active Publication Date: 2022-05-06
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no such method in the prior art

Method used

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  • A Blind Signature Generation Method without Certificate and Traceable Blockchain Signature
  • A Blind Signature Generation Method without Certificate and Traceable Blockchain Signature
  • A Blind Signature Generation Method without Certificate and Traceable Blockchain Signature

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Experimental program
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Embodiment Construction

[0035] In the following, the technical solutions of the present invention will be further described in detail in conjunction with the drawings and specific embodiments.

[0036] like figure 1 As shown, a block chain anti-signature traceable non-certificate blind signature generation method, which includes the following steps:

[0037] system initialization:

[0038] This step is performed by the key generation center KGC, mainly to generate the system parameters of the entire blind signature scheme.

[0039] The specific way is:

[0040] ·Given the security parameter k, KGC chooses two hash functions and choose a random number As its own master private key, and calculate the public key P pub =s·P.

[0041] KGC chooses two addition cycles whose order is a prime number q and the multiplicative cyclic group where elements is the additive cyclic group generator of . Bilinear pair e: g=e(P,P) is a group an element in .

[0042] ·KGC public system parameter...

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PUM

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Abstract

The invention discloses a certificate-free blind signature generation method with anti-signature traceability of blockchain, belonging to the technical field of information security. The method first generates the system parameters of the entire blind signature scheme through the system initialization algorithm; then the key generation center generates part of the private key for the signer, and the signer selects the secret value to calculate its own signature private key and signature public key; in the signature process, The user blinds the message through the blinding factor and sends it to the signer; the signer signs the blinded message through the signature private key and sends it to the user; the user deblinds the blinded signature to obtain the message's sign. The present invention uses a blind factor in the signature process to destroy the linearity of the final signed message, thereby ensuring the blindness and untraceability of the blind signature scheme of the present invention.

Description

technical field [0001] The invention belongs to the technical field of information security, in particular to a method for generating a certificateless blind signature with block chain anti-signature traceability. Background technique [0002] Digital signature is a kind of security protection technology that emerges with the development of information network technology. The purpose is to realize the function of traditional handwritten signature through technical means, and to identify the identity of the signer and the legality of the data content. Digital signature is an important part of public key cryptosystem and plays an important role in many occasions. Normally, the signer must know what the message he is signing is in order to sign the message. But in many cases, such as electronic voting and elections, the owner of the message does not want the signer to obtain the specific content of the message, and the signer just wants others to know that he has signed the me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L9/08G06F16/27
CPCH04L9/3257H04L9/0861G06F16/27H04L9/50
Inventor 文义红张韵茹何德彪罗敏王士成梁硕李峰陈金勇徐小刚
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP