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Method for establishing anti-attack public key cryptogram

A public key cryptography, anti-attack technology, applied in the field of information security, can solve problems such as hidden dangers in the security of public key cryptography identity verification data protection

Inactive Publication Date: 2013-11-27
深圳市鹏鉴科技开发企业
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the hidden dangers of identity verification and data protection based on existing public key cryptography, the purpose of the present invention is to establish a public key cryptography technology that can resist various known attacks, and on this basis give application protocol

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  • Method for establishing anti-attack public key cryptogram
  • Method for establishing anti-attack public key cryptogram
  • Method for establishing anti-attack public key cryptogram

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Embodiment Construction

[0060] A public key cryptographic protocol against quantum computing attacks of the present invention will be further described in detail below in conjunction with embodiments.

[0061] 1. Establish a platform for public key cryptographic protocols

[0062] The platform for establishing all public-key cryptographic protocols is an infinite non-abelian group G and two subgroups A and B of G, so that for any a∈A and any b∈B, the equation ab=ba holds. In addition, due to the needs of encoding and key generation, G must also meet the following conditions:

[0063] 1) A word representing an element of G on the generator set of G has a computable normal form;

[0064] 2) G is at least exponential growth (exponential growth), that is, the number of elements in G whose word length is a positive integer n is bounded by an exponential function about n;

[0065] 3) The product operation and inversion operation based on the normal form of the group are feasible and computable.

[0066] F...

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Abstract

The invention relates to the field of information safety, and discloses a method for establishing an anti-attack public key cryptogram. The method includes a shared key generating method. The shared key generating method includes the following steps that (11) an infinite non-communicative group G is established; (12) both parties in an agreement select two elements of the G as private keys; (13) the party B in the agreement calculates y and sends the y to the party A in the agreement; (14) the party A in the agreement calculates x and z and sends (x, z) to the party B in the agreement; (15) the party B in the agreement calculates w and v and sends the (w, v) to the party A in the agreement; (16) the party A in the agreement calculates u and sends the u to the party B in the agreement; (17) the party A in the agreement calculates KA, and the party B in the agreement calculates KB; therefore, the shared key K=KA=KB is formed. Safety assurance of the established public key cryptographic algorithm depends on unsolvability of a problem, and therefore the method has the advantage of being resistant to quantum computing attack.

Description

technical field [0001] The invention relates to the field of information security, in particular to a cryptographic technology for establishing a public key cryptography resistant to quantum computing attacks. Background technique [0002] The verification of the real identity of the information sender and receiver, the non-repudiation of the sent / received information after the event, and the guarantee of data integrity are two important issues in the subject of modern cryptography. [0003] The public key cryptosystem has provided excellent answers to these two problems, and is continuing to produce many new ideas and schemes. In a public key system, the encryption key is different from the decryption key. People make the encryption key public, and anyone can use it; and the decryption key is only known to the decryptor himself. The security of modern public-key cryptosystems is almost always based on two types of mathematical problems that are currently considered to be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L29/06
CPCH04L9/002H04L9/0844H04L9/3013H04L9/3271H04L9/0852H04L9/3247
Inventor 王晓锋王威鉴林汉玲王晓阳
Owner 深圳市鹏鉴科技开发企业
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