A signature authentication method and system based on elliptic curve

An elliptic curve and signature authentication technology, applied in the field of body area network node authentication, can solve the time-consuming problems of improving the signature algorithm

Active Publication Date: 2020-03-20
国康中健(北京)科技有限公司
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Problems solved by technology

[0007] (2) In the calculation of traditional signature values, there are not only multiplication and addition operations, but also inversion operations. For large integers, inversion is a time-consuming operation, and inversion operations greatly improve the entire signature algorithm. time-consuming

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  • A signature authentication method and system based on elliptic curve
  • A signature authentication method and system based on elliptic curve
  • A signature authentication method and system based on elliptic curve

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Embodiment Construction

[0058] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.

[0059] figure 1 It shows the implementation flowchart of the elliptic curve-based signature authentication method provided by the present invention, which specifically includes the following steps:

[0060] In step S101, the authentication parameters based on the elliptic curve are initialized, and the node A is defined as a signature node, and the node B is an authentication node for authenticating the identity of the node A.

[0061] In step S102, at node A, randomly select As the private key, calculate the public key Q A = d A P=(Q Ax ,Q Ay ), and store the private key and publish (G 1 ,G 2 ,H,P,Q A ),...

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Abstract

The invention belongs to the technical field of body area network node authentication and provides a method and a system for signature authentication based on an elliptical curve. The method comprises the following steps of initializing authentication parameters based on the elliptical curve; at a node A, randomly selecting (formula) as a private key, computing a public key QA=Dap=(QAx, QAy), storing the private key and publishing the public key (G1, G2, H, P, QA); at the node A, randomly selecting two integers m, wherein r belongs to ZP, and computing a signature value sigma' in an offline state; at the node A, recovering state information m and r and computing an online signature value r' of a message M; generating a complete signature sigmaM of the message M according to the signature value sigma' in the offline state and the online signature value r' of the message M which are obtained by computation, and sending the generated complete signature sigmaM of the message M to a node B; and at the node B, carrying out effective authentication of the signature on the complete signature sigmaM sent by the node A. according to the method and the system, the signature authentication based on the elliptical curve is realized, and the calculated quantity for signature and verification is effectively reduced and the signature verification speed is improved.

Description

technical field [0001] The invention relates to the technical field of body area network node authentication, in particular to an elliptic curve-based signature authentication method and system. Background technique [0002] WBAN is a human-centered network composed of sensors placed on the surface of the human body or implanted inside the human body and some mobile terminals. With the in-depth research on wireless body area network, more and more people pay attention to the security of wireless body area network. Identity authentication plays a special role in information security, and in most cases it is combined with methods such as key negotiation. It is proposed as a large overall information protection scheme. Identity authentication is a general term for identification and authentication, and it is used to verify whether the user has the right to use and store the requested resources, that is, the process of verifying and checking the user's identity. The most criti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L9/30H04L9/06
CPCH04L9/0643H04L9/3066H04L9/3236H04L9/3252
Inventor 朱斌吴小林胡雨彤冉亚梅朱帅吴小同陈书然
Owner 国康中健(北京)科技有限公司
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