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Electronic contract signing method based on certificateless signcryption

An electronic contract and certificate-free technology, which is applied to electrical components, public keys for secure communications, and key distribution, can solve the problem of complex procedures for users to apply for certificates, convenience and limitations in applicable fields, and huge public key certificate library management and maintenance Issues such as computation, communication, and storage costs

Active Publication Date: 2017-05-31
江苏慧世联网络科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, since the issuance of digital certificates depends on the trusted CA center, the management and maintenance of the public key certificate library requires huge calculation, communication and storage costs, and the process for users to apply for certificates is very complicated, resulting in the convenience of use and the scope of application. many restrictions

Method used

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  • Electronic contract signing method based on certificateless signcryption
  • Electronic contract signing method based on certificateless signcryption
  • Electronic contract signing method based on certificateless signcryption

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Embodiment Construction

[0066] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0067] Such as figure 1 As shown, an electronic contract signing method based on certificateless signcryption, which uses a signing platform and a key management system, the method includes the following steps, taking users Alice and Bob as an example:

[0068] S1. Steps for initializing the secret key management system:

[0069] S1-1, input a kind of security parameter k for the secret key management system central agency according to the required security level, k is a natural number (preferably 2 n ), using the bilinear group generation algorithm to generate a bilinear group of prime order p, that is, G(k)→(e,p,G,G τ ), where: e:G×G→G τ , which means that any two elements in the group G are mapped to the group G τ an element in

[0070] S1-2. The central organization of the secret key management system selects four anti-collision hash functions:...

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Abstract

The invention provides an electronic contract signing method based on certificateless signcryption. A signing platform and a secret key management system are used. The method includes the steps that initialization of the secret key management system is conducted, user registering is conducted, a user initiates signing, and the user accepts signing. The system is easy to deploy, and system deployment does not depend on a CA center in a PKI; identity identification is easy, and recognition between users in the system only needs identity information of the other party and does not need to verify public-key certificates of the other party; use cost is lower, the user only needs to register in the system to obtain a corresponding system secret key, and the user does not need to purchase a Ukey hardware device to manage the certificate of the user.

Description

technical field [0001] The invention relates to the field of contract signing, in particular to an electronic contract signing method based on certificateless signcryption. Background technique [0002] With the continuous development of e-commerce, there are more and more transaction modes using electronic contracts in the business process, but the electronic contract signing technology usually used is based on CA digital certificate of public key cryptography (PKC for short). model. In the public key cryptography system, each user has a pair of matching public key and private key, in which the public key is open to the outside world, and the private key is kept safely by the user; in order to ensure the authenticity and validity of the user's public key, The traditional solution is to use the public key infrastructure PKI (public key infrastructure). The core component of PKI is the certificate authority CA (certificate authority). The CA is responsible for issuing public...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L9/30H04L29/06
CPCH04L9/0816H04L9/0861H04L9/30H04L63/06H04L63/08
Inventor 葛峰韩金广
Owner 江苏慧世联网络科技有限公司
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