Multi-party AOS ring signature method and system based on Shamir secret sharing
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A technology of secret sharing and ring signature, applied in the field of cryptographic schemes, to achieve the effect of enhancing security, strong universality, and guaranteeing security
Pending Publication Date: 2022-05-31
SHANDONG LANGCHAO YUNTOU INFORMATION TECH CO LTD
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However, unlike ECDSA signature, AOS ring signature has many multi-party signature schemes to ensure the security of private key
Method used
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Embodiment 1
[0046] A multi-party AOS ring signature method based on Shamir secret sharing, the specific steps of the method are as follows:
[0047] 1.1. The public and private keys required by the scheme are generated by the key generation center, the private keys are safely distributed and the public keys are made public;
[0048] 1.2. Multiple devices interact and output the AOS ring signature;
[0049] 1.3. The device that verifies the signature invokes the verification algorithm of the AOS ring signature to verify the ring signature output in step 1.2;
[0050] The method of the invention allows the user using the scheme to store the private key of the AOS ring signature separately on multiple different devices, so that the AOS ring signature cannot be generated normally only by the private key on one device, which effectively guarantees the key storage and the security of use; in the signature generation process of the method of the present invention, multiple devices need to gener...
Embodiment 2
[0078] A multi-party AOS ring signature system based on Shamir secret sharing, the system specifically includes a public key generation module, a multi-party signature module and a signature verification module:
[0079] Public key generation module: the key generation center generates the public and private keys required by the scheme, securely distributes the private key and discloses the public key;
[0080] Multi-party signature module: multiple devices interact and output the AOS ring signature;
[0081] Multi-party signature module: the device that verifies the signature calls the verification algorithm of the AOS ring signature to verify the ring signature output in step 1.2;
[0082] Further, the public key generation module specifically includes a user key calculation module and a device key distribution module:
[0083] User key calculation module: the key generation center calls the key generation algorithm of AOS ring signature, generates ring signature public and...
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Abstract
The invention discloses a multi-party AOS ring signature method and system based on Shamir secret sharing, and belongs to the field of cryptography schemes. The method comprises the following specific steps: 1.1, a key generation center generates public and private keys required by a scheme, safely distributes the private keys and publishes the public keys; 1.2, a plurality of devices interact with each other, and the AOS ring signature is output; 1.3, the equipment for verifying the signature calls a verification algorithm of the AOS ring signature to verify the ring signature output in the step 1.2; according to the method, a user using the scheme is allowed to separately store the private key of the AOS ring signature on a plurality of different devices, so that the AOS ring signature cannot be normally generated only by means of the private key on one device, and the security of key storage and use is powerfully guaranteed. In the signature generation process, multiple devices need to generate random numbers through Shamir secret sharing cooperation, and the security of the signature process is enhanced; and finally, when the AOS signature is generated, Shamir secret sharing is adopted, so that the complete AOS ring signature can be calculated under the condition that a plurality of devices do not expose respective AOS private keys, and private key leakage can be prevented.
Description
technical field [0001] The invention discloses a multi-party AOS ring signature method and system based on Shamir secret sharing, and relates to the technical field of cryptography schemes. Background technique [0002] At present, in the blockchain system, in order to prevent the user's public key from being located and tracked when verifying the signature, realize user anonymity and better protect user privacy, ring signatures have been widely used. Among them, the signature size of the AOS ring signature is reduced by 50% compared with the initial ring signature. However, unlike ECDSA signature, AOS ring signature has many multi-party signature schemes to ensure the security of private key. [0003] Therefore, a multi-party AOS signature method and system based on Shamir secret sharing is invented to solve the above problems. Contents of the invention [0004] Aiming at the problems of the prior art, the present invention provides a method and system for changing sign...
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
CPCH04L9/085H04L9/088H04L9/0816H04L9/0869
Inventor 孟奇
Owner SHANDONG LANGCHAO YUNTOU INFORMATION TECH CO LTD
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