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Multi-receiver signcryption method based on multiple variables and multiple security properties

A security attribute, multi-receiver technology, applied in the field of multi-receiver signcryption, can solve the problem of poor fairness

Active Publication Date: 2015-04-22
东莞三航安视睿信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiency of the existing multi-receiver signcryption method with poor decryption fairness, the present invention provides a multi-receiver signcryption method based on multi-variable and multi-security attributes

Method used

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  • Multi-receiver signcryption method based on multiple variables and multiple security properties
  • Multi-receiver signcryption method based on multiple variables and multiple security properties
  • Multi-receiver signcryption method based on multiple variables and multiple security properties

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Embodiment Construction

[0108] refer to Figure 1-2 . The specific steps of the multi-receiver signcryption method based on multi-variable and multi-security attributes of the present invention are as follows:

[0109] Glossary:

[0110] pk i : public key of user i, where i is a positive integer;

[0111] sk i : private key of user i;

[0112] l: positive integer;

[0113] F: finite field with order 2;

[0114] G: the polar coordinate form of the multivariate equation system P;

[0115] f n : n-dimensional vector space on finite field F;

[0116] f m : m-dimensional vector space on the finite field F;

[0117] u: an n-dimensional vector on the finite field F;

[0118] v: an n-dimensional vector on the finite field F;

[0119] w: an n-dimensional vector on the finite field F;

[0120] L: the leader selected from the actual signcryptors;

[0121] V: receiver;

[0122] Params: system public parameters;

[0123] *: Indicates any length;

[0124] ο: composite operator between mappings;

...

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Abstract

The invention discloses a multi-receiver signcryption method based on multiple variables and multiple security properties. The method is used for solving the technical problem that an existing multi-receiver signcryption method is poor in designcryption justice. According to the technical scheme, an algorithm KeyGen, a signcryption algorithm Signcrypt and a designcryption algorithm Designcrypt which are used for generating system parameters and secret key pairs of all users are involved in the method. The signcryption algorithm is based on a finite domain F with a characteristic q, totally N+tau participants are involved in a system, a leader L is selected from actual signcryption persons and calculates interference data, the interference data and real data are mixed together, so receivers can not judge the identities of the actual signcryption persons. By means of the threshold technology, the anonymity of senders is ensured; the identity list of the receivers is not directly given any more in communication data, and the anonymity and early judgment of the receivers are ensured; key information of designcryption and information of the authorized receivers are fused into a parameter list, and the designcryption justice is ensured.

Description

technical field [0001] The invention relates to a multi-receiver signcryption method, in particular to a multi-receiver signcryption method based on multi-variables and multi-safety attributes. Background technique [0002] The signcryption scheme integrates the encryption technology to ensure the confidentiality of the message and the signature technology to ensure the integrity of the message into one logical step, and realizes the two functions of encryption and signature at the same time, which is more efficient than simple signature first and then encryption. With the development of science and technology, the attack technology is also constantly upgraded, and the message is vulnerable to tampering, forgery and other attacks during transmission. There is an increasing need to protect the integrity and confidentiality of messages. After the signcryption technology was proposed, it developed rapidly, and signcryption schemes adapted to different environments appeared. S...

Claims

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Application Information

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IPC IPC(8): H04L9/32
Inventor 李慧贤韩冬棋范天琪张晓莉
Owner 东莞三航安视睿信息技术有限公司
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