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Ring signature generation method based on SM9 digital signature algorithm

A digital signature and ring signature technology, applied in the field of information security, can solve problems such as ring signature schemes without digital signature algorithms, and achieve the effects of ensuring non-repudiation, easy verification, and high security

Active Publication Date: 2020-03-24
WUHAN UNIV
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  • Abstract
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Problems solved by technology

[0006] Researchers have proposed several identity-based ring signature schemes, but there is no ring signature scheme based on the SM9 digital signature algorithm

Method used

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  • Ring signature generation method based on SM9 digital signature algorithm

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Embodiment Construction

[0039]In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] This patent designs a ring signature generation scheme based on SM9 digital signature. In this scheme, the key generation center (KGC) is responsible for key distribution, and the signer (Signer) is responsible for spontaneously forming a signature group and completing the message signature. The verifier (Verifier) ​​can verify the validity of the message signature and judge whether the signer is a ring users.

[0041] To ensure universality, the selection of parameters in this patent is consistent with the standard parameters of the SM9 signature algorithm. The specific symbols are described as follows:

[0042] N...

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Abstract

The invention discloses a ring signature generation method based on an SM9 digital signature algorithm, which is characterized by comprising a key generation center KGC, a signer and a Verifier, wherein the KGC is responsible for generating a user private key of a signed user in the system; setting the number of users in the ring to be n, marking the user group identifier set as L={ID1, ID2,..., IDn}, and the signer being the pi-th user in the user group, the private key of which is SKpi and the identifier of which is IDpi. The method comprises the following steps of (1) generating a ring signature of a to-be-signed message M, and (2) verifying the ring signature. In the process of generating the signature, a signer can spontaneously construct a user group to form a ring, the ring signature can be generated without the participation of other users, and meanwhile, the non-repudiation of the signature and the anonymity of the identity of the signer are ensured.

Description

technical field [0001] The invention relates to information security technology, in particular to a ring signature generation method based on SM9 digital signature algorithm. Background technique [0002] Digital signature is a public key cryptographic algorithm, which can realize the function of traditional signature or seal to ensure the integrity, authenticity and non-repudiation of information transmission. With the widespread application of digital signatures, digital signature schemes with special functions are required in some fields, and traditional digital signatures cannot meet the needs of applications. For example, in specific application scenarios such as e-cash, e-voting, e-election, and anonymous communication, it is necessary to guarantee the anonymity of the identity of the signer, while traditional signatures do not have this function. [0003] Ring signature is a signature mechanism proposed by Rivest et al. to achieve anonymity. It is a group-oriented s...

Claims

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Application Information

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IPC IPC(8): H04L9/32
CPCH04L9/3255
Inventor 何德彪彭聪范青贾小英罗敏黄欣沂
Owner WUHAN UNIV
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