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Encryption communication method and device

A communication method and technology requiring encryption, applied in the field of communication, can solve the problems of low key update efficiency, achieve the effects of improving key update efficiency, reducing communication costs, and simplifying key update steps

Inactive Publication Date: 2004-05-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0011] The present invention provides an encrypted communication method and device to solve the problem of low key update efficiency in existing encrypted communication methods

Method used

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  • Encryption communication method and device
  • Encryption communication method and device
  • Encryption communication method and device

Examples

Experimental program
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specific Embodiment approach 1

[0028] Please refer to figure 1 and figure 2 , in the ATM-PON communication system, the optical line terminal sends ATM cells to the optical network unit on the communication network in broadcast mode to carry relevant information. In order to ensure the security of the transmitted information, the link layer needs to be encrypted, so Encrypted communication devices are installed on the optical line terminal and the optical network unit to support encrypted communication.

[0029] The encrypted communication device includes two parts: a sending end device and a receiving end device. The sending end device is located at the optical line terminal, and the receiving end device is located at the optical network unit. The sending end device includes a new key requester, a new key memory group, an encryption key key storage, encryption key update decider and encryptor. The receiver device includes a new key generator, a new key storage, a decryption key storage, a decryptor and a...

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Abstract

The device includes sending end device and receiving end device. The former includes requester for new cipher key, storage group for new cipher key, storage for encryption key, renewal decision-maker for cipher key and encipherer. The latter includes creator for new cipher key, storage for new cipher key, storage for deciphered cipher key, decipherer; and renewal decision-maker for deciphered cipher key. The method includes following steps. Sending end sends request for new cipher key, and receiving end sends new cipher key. Sending end checks-up received new cipher key. If it is correct, the new cipher key is put into use, and needed encryption information is sent out in encryption mode. The receiving end deciphers the encryption information by using new and old cipher key. If tested result is correct, the new cipher key is put into use, and correct decryption information is output. The invention simplifies steps for updating cipher key, raises efficiency and lowers cost.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an encrypted communication method and device. Background technique [0002] In modern society, information security is becoming more and more important. In order to ensure the information security of both parties in the communication system, it is necessary to encrypt the communication information, and encrypted communication technology came into being. [0003] Among the current encrypted communication methods, the more common method includes the following steps: [0004] A sender sends a new key request to the receiver; [0005] B The receiving party receives the new key request, generates and stores the new key, and the receiving party continuously sends the new key to the sender multiple times; [0006] C The sender has received multiple new keys. When all or most of the new keys received are the same, the sender will periodically send multiple sequentially numbered k...

Claims

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Application Information

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IPC IPC(8): H04K1/00H04L9/12H04L9/14
Inventor 赵峻谭培龙洪建明刘昱
Owner HUAWEI TECH CO LTD
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