A method for signing electronic contracts 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: 2020-06-19
江苏慧世联网络科技有限公司
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  • Abstract
  • Description
  • Claims
  • 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

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  • A method for signing electronic contracts based on certificateless signcryption
  • A method for signing electronic contracts based on certificateless signcryption
  • A method for signing electronic contracts 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

An electronic contract signing method based on certificateless signcryption, which uses a signing platform and a key management system, the method includes the steps of key management system initialization, user registration, user initiation of signing and user acceptance of signing : the deployment of the system of the present invention is simple: the deployment of the system no longer depends on the CA center in the PKI; simple identification: the identification between users in the system only needs the identity information of the other party, and does not need to verify the public key certificate of the other party; the cost of use Lower: Users only need to register in the system and obtain the corresponding system secret key, no need to purchase Ukey hardware devices to manage their own certificates.

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, more and more transaction models use electronic contracts in the business process, but the commonly used electronic contract signing technology is based on the CA digital certificate model of public key cryptography (PKC for short). . 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 key ...

Claims

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Application Information

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Patent Type & Authority Patents(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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