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Key update method, apparatus and system based on optical transport network (OTN)

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

Active Publication Date: 2017-01-04
ZTE CORP
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  • 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

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  • Key update method, apparatus and system based on optical transport network (OTN)
  • Key update method, apparatus and system based on optical transport network (OTN)
  • Key update method, apparatus and system 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 invention discloses a key update method, apparatus and system based on an OTN. The method comprises when an encryption end detects that local configuration information is valid, detecting validity of decryption end readiness information received via a pre-set receiving overhead channel within a pre-set period of time; after determining that the decryption end readiness information is valid within the pre-set period of time, sending key update information about a local end to the decryption end via a pre-set sending overhead channel when a next pre-set cycle meets a pre-set condition; and when the next pre-set cycle, after the encryption end sends the key update information to the decryption end, meets the pre-set condition, encrypting service information sent to the decryption end by means of an updated key. By means of the technical solution, while ensuring the consistency of keys of an encryption end and a decryption end, it is also ensured that an intermittent service interruption does not occur and a service of an OTN device is not affected in a process of replacing new and old keys.

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 Applications(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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