Information processing method and device

An information processing method and technology of an information processing device, which are applied in the security field and can solve problems such as imperfect communication efficiency and security.

Active Publication Date: 2021-06-11
CHINA TELECOM CLOUD TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the protocol proved to be still not perfect in terms of communication efficiency and security
The communication complexity of the existing QPQ protocol based on QKD is often O(NlogN)

Method used

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  • Information processing method and device
  • Information processing method and device
  • Information processing method and device

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Embodiment Construction

[0023] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is illustrative only, and in no way restricts the disclosure, its application or uses. The present disclosure can be implemented in many different forms and is not limited to the embodiments described here. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the relative arrangement of parts and steps, the composition of materials and numerical values ​​set forth in these embodiments should be interpreted as illustrative only and not as limiting unless specifically stated otherwise.

[0024] Words such as "comprising" or "comprising" used in the present disclosure mean that the elements preceding the word cover the elements listed after the word, and t...

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Abstract

The invention provides an information processing method and device. The information processing device executes a QKD algorithm, and shares one N-bit original key R between a first party and a second party; the bit information between the (j-l)th bit and the (j+l)th bit in the original key R is utilized to calculate key information Qj, j is larger than or equal to 1 and smaller than or equal to N, and l is a security parameter; the key information Qj is converted into a binary number Q'j; and exclusive or addition operation is performed on all bit values of the binary number Q'j to generate the jth bit Oj in the final key so as to obtain the final key O. The security of the QPQ protocol is greatly improved while the communication complexity is reduced.

Description

technical field [0001] The present disclosure relates to the security field, and in particular to an information processing method and device. Background technique [0002] With the rapid development and popularization of Internet informatization, the emergence of massive information has also brought a series of information security issues. As an important security technology, cryptography has laid an important foundation for the development of information security. Since the research basis of classical cryptography is Shannon's secure communication theory, security proof relies on mathematical theory for support. Due to the powerful computing power of quantum computing. Many problems that were unsolvable in the field of classical cryptography become solvable. Therefore, designing a new cryptographic algorithm to resist the threat of being deciphered has become a hot spot. [0003] The development of the quantum private query protocol has gone through two stages. The firs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
CPCH04L9/0852H04L9/0858H04L9/0869
Inventor 王宁白雪杜璟彦
Owner CHINA TELECOM CLOUD TECH CO LTD
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