Key management method and system for AOS ring signature

A ring signature and key generation technology, applied in the field of key management, to prevent private key leakage, ensure security, and prevent man-in-the-middle attacks

Pending Publication Date: 2022-06-03
SHANDONG LANGCHAO YUNTOU INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unlike ECDSA signature, AOS ring signature has many two-party key management or multi-party key management schemes to ensure the security of private key

Method used

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  • Key management method and system for AOS ring signature
  • Key management method and system for AOS ring signature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A key management method for AOS ring signature, the specific steps of the method are as follows:

[0055] S1 The key generation center generates the public and private keys required by the scheme, securely distributes the private keys and discloses the public keys;

[0056] S2 two devices perform two-party signatures and device A outputs the signatures;

[0057] The S3 device that verifies the signature verifies the output signature;

[0058] The method of the invention involves a key generation center, a ring signature verification device, and two user equipments (such as computers and mobile phones); the two user equipments are set as A and B; the AOS ring signature runs at the order p, and the generator is g. In the cyclic group G; H is a certain hash function; n users participate in the ring signature; 0≤i≤n-1; m is the ring signature message to be signed;

[0059] Further, the specific steps of the S1 are as follows:

[0060] S101 The key generation center invok...

Embodiment 2

[0085] A key management system for AOS ring signature, the system specifically includes a key preparation module, a two-party signature module and a signature verification module:

[0086] Key preparation module: the public and private keys required by the scheme are generated by the key generation center, the private keys are distributed securely and the public keys are disclosed;

[0087] Two-party signature module: Two devices perform two-party signatures and device A outputs the signature;

[0088] Signature verification module: The device that verifies the signature verifies the output signature;

[0089] Further, the key preparation module specifically includes a key generation module A, a key generation module B and a key generation module C:

[0090]Key generation module A: The key generation center invokes the key generation algorithm of AOS ring signature, generates the ring signature public and private keys, and securely distributes the corresponding private key an...

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PUM

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Abstract

The invention discloses a key management method and system for AOS ring signature, and belongs to the field of key management. The method comprises the following specific steps: S1, a key generation center generates public and private keys required by a scheme, safely distributes the private keys and publishes the public keys; s2, the two devices carry out two-party signature, and the device A outputs the signature; s3, the device for verifying the signature verifies the output signature; the invention provides a two-party key management scheme for the AOS ring signature, and allows the participated user to separately store the private key of the AOS ring signature on two different devices, so that the AOS ring signature cannot be normally generated only by means of the private key on one device, and the key storage and use security is powerfully guaranteed.

Description

technical field [0001] The invention discloses a key management method and system for AOS ring signature, and relates to the technical field of key management. Background technique [0002] At present, in the blockchain system, ring signatures have been widely used in order to prevent the user's public key from being located and tracked during signature verification, to achieve user anonymity and to better protect user privacy. Among them, the signature size of AOS ring signature is reduced by 50% compared with the initial ring signature. However, unlike ECDSA signatures, AOS ring signatures have many two-party key management or multi-party key management schemes that secure private keys. Therefore, the present invention provides a key management method and system for AOS ring signature to solve the above problems. SUMMARY OF THE INVENTION [0003] Aiming at the problems of the prior art, the present invention provides a key management method and system for AOS ring sign...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04L9/08H04L9/30H04L9/32
CPCH04L9/30H04L9/088H04L9/008H04L9/3255H04L9/3247H04L9/0819H04L9/0869
Inventor 孟奇
Owner SHANDONG LANGCHAO YUNTOU INFORMATION TECH CO LTD
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