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A method, device and system for key update based on optical transport network otn

A key update, optical transmission network technology, applied in transmission systems, digital transmission systems, secure communication devices, etc.

Active Publication Date: 2020-04-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, the current key update technology cannot solve the above two difficulties at the same time

Method used

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  • A method, device and system for key update based on optical transport network otn
  • A method, device and system for key update based on optical transport network otn
  • A method, device and system for key update based on optical transport network otn

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Embodiment Construction

[0056] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0057] The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0058] see figure 1 , which shows an OTN-based key update method provided by an embodiment of the present invention, the method can be applied to a single-board logic device at the encryption end, and the method can include:

[0059] S101: When the encry...

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Abstract

The present invention discloses a method, device and system for key update based on optical transmission network OTN, including: when the encryption end detects that the local configuration information is valid, it detects that the key has passed through the preset receiving overhead channel within a preset time period The validity of the received decryption terminal readiness information; after determining that the decryption terminal readiness information is valid within a preset period of time, when the next preset period meets the preset conditions, the decryption terminal is sent to the decryption terminal through the preset sending overhead channel Send the key update information of the local end; when the encryption end sends the key update information to the decryption end, when the next preset period meets the preset condition, the updated key pair sends The service information to the decryption end is encrypted. Through the technical solution provided by the present invention, while ensuring the key consistency of the encryption end and the decryption end, it also ensures that no business interruption occurs during the replacement process of the old and new keys, and the business of the OTN equipment itself is not affected.

Description

technical field [0001] The present invention relates to information security technology of Optical Transport Network (OTN, Optical Transport Network), in particular to a method, device and system for key update based on Optical Transport Network (OTN). Background technique [0002] The OTN encrypted transmission system is usually composed of two parts: an encryption module and a key management system. Among them, the encryption module generally adopts the standard Advanced Encryption Standard (AES, Advanced Encryption Standard) encryption algorithm; the key management system is mainly composed of public key parameter configuration management, private key generation, public key operation processing module, shared key negotiation and acquisition module , key lossless switching and other functional modules. Key update is an indispensable basic functional module in the key management system. If you want to complete the key update in the OTN transmission system, you must solve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04L29/06
CPCH04L9/08H04L9/40
Inventor 潘磊王春光杜凯
Owner ZTE CORP
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