Security instant communication system

A communication system and security technology, which is applied in the field of optical fiber communication and instant communication, can solve the problems of instant communication confidentiality and poor practicability, and achieve the effect of improving security

Inactive Publication Date: 2010-02-10
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of poor confidentiality and practicability of existing instant messaging, the present invention proposes an instant messaging system

Method used

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  • Security instant communication system
  • Security instant communication system
  • Security instant communication system

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Embodiment Construction

[0036] An instant messaging system provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Quantum key distribution is the fastest-growing branch in the field of quantum information. It relies on the uncloning principle of a single quantum state to enable both parties to communicate in different places to achieve absolutely secure key distribution. In 1984, Bennett and Brassard proposed the first quantum cryptography scheme, the BB84 protocol. In 1992, quantum key transmission was demonstrated experimentally. Subsequently, various laboratories carried out experimental research on quantum key distribution, which greatly promoted the practical application of quantum key distribution. Although the key generation rate of the current quantum key distribution is still relatively low, it is difficult to apply to some occasions with relatively large data transmission traffic. However, the am...

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Abstract

The invention discloses an instant communication system, which comprises a sender and a receiver. Instant communication modules of the sender and the receiver carry out parameter setting on a controlcircuit, generate encrypted data for transmission, and decrypt the received data; a control circuit modulates a quantum key module, acquires an original key and controls a synchronous timing sequence;the quantum key module generates the original key synchronously according to a trigger signal, modulation voltage and a timing sequence signal of the control circuit; a clock synchronous module generates a synchronous clock signal according to the trigger signal of the corresponding control circuit, and sends the synchronous clock signal to the clock synchronous module of the receiver; the clocksynchronous module of the receiver returns the clock synchronous signal and completes the synchronization of the sender and the receiver; and the sender and the receiver encrypt and decrypt information by a real-time security key generated by a quantum key generation system according to an one-time pad memo-type encryption scheme; therefore, the instant communication system has high security, andcan realize the off-site absolutely-secure instant communication.

Description

technical field [0001] The present invention relates to the technical fields of instant messaging and optical fiber communication, and more specifically, the present invention relates to an instant messaging system. Background technique [0002] At present, the Internet has become the main channel for information transmission and exchange. Through the Internet, it is possible to obtain information conveniently and communicate with others in a timely manner. At the same time, it will inevitably bring about the issue of confidentiality of information transmission on the Internet. In the field of instant messaging technology, currently widely used instant messaging software includes Tencent QQ, MSN and NetEase Paobao. Such software generally adopts classic encryption methods, such as RSA, DES, TEA and other encryption algorithms. The confidentiality of these encryption algorithms depends on the complexity of the key and the algorithm, and it is easy for hackers to find the rule...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L12/58
Inventor 赵建领吴令安
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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