CN115052009B - Network function virtualization data protection method and system based on double-chain block chain - Google Patents
Network function virtualization data protection method and system based on double-chain block chain Download PDFInfo
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- CN115052009B CN115052009B CN202210690876.8A CN202210690876A CN115052009B CN 115052009 B CN115052009 B CN 115052009B CN 202210690876 A CN202210690876 A CN 202210690876A CN 115052009 B CN115052009 B CN 115052009B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/28—Restricting access to network management systems or functions, e.g. using authorisation function to access network configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0407—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the identity of one or more communicating identities is hidden
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention relates to a network function virtualization data protection method and system based on a double-chain block chain. The method comprises the steps of constructing a double-chain NFV model; the double-chain NFV model comprises an NFV layer, a down-chain storage layer and a blockchain layer; the NFV layer is used for registering and logging in users, providing NFV services, encrypting and signing, and sending service data to the down-link storage layer; the under-link storage layer is connected with the block link layer; the down-link storage layer stores the service data and sends the index information to the block link layer; the block chain layer comprises a working chain and a verification chain; the working chain links the index information, determines an abstract value according to the index information, and uploads the abstract value to a verification chain by adopting an intelligent contract; acquiring a digest value, and verifying whether the index information is tampered according to the digest value; and when the index information is not tampered, acquiring corresponding service data according to the index information, and performing auditing work. The invention can solve the problem of auditability of NFV service data, and improves the safety on the basis of keeping high efficiency.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a network function virtualization data protection method and system based on a double-chain block chain.
Background
Network Functions Virtualization (NFV) is one of the important technologies of 5G. NFV requires common maintenance with many parties. In a collaborative environment, the NFV model has a need for decentralization in addition to the need for auditability. In addition, the problem of lack of trust needs to be solved, because each NFV participant cannot trust the other participants sufficiently, and they all have absolute control over own data.
In order to solve the problems of centralization, weak auditability and lack of trust, a blockchain technology is introduced into the NFV field as a solution. A block chain (Blockchain) is a distributed account book system participated by nodes, and is characterized by being unchangeable and unforgeable. The block chain is composed of a string of data blocks generated by cryptography, each block containing a hash value (hash) of a previous block, and is connected to the current block starting from the starting block to form the block chain. Each block is guaranteed to be generated after the previous block in time order.
The current NFV design based on the block chain is based on a single block chain, and the NFV based on the single block chain cannot give consideration to high safety and high efficiency, and the NFV design based on the single block chain specifically has the following embodiments: firstly, potential safety hazards. When the single blockchain adopts the private chain or alliance chain technology, certain security is improved compared with the non-blockchain NFV, but the decentralized degree of the single blockchain or alliance chain is low, in practical application, the private chain and the alliance chain are jointly proxied by one or a plurality of mechanisms, and when the centralized shutdown condition occurs, for example, the blockchain is extremely easy to attack and tamper data. The mechanisms by which these proxy blockchains operate may also combine to hinder blockchain usage; second, efficiency and data limitations. When the single block chain adopts the public chain technology, the single chain NFV model efficiency based on the public chain is seriously limited by the public chain efficiency because the public chain block-out speed is low. In order to prevent all public link users from being able to see the service data, the service data is not allowed to be stored in the public link in clear. And the block size of the public link is limited, so that excessive service data cannot be stored.
Therefore, it is desirable to provide a new protection method to solve the above problems.
Disclosure of Invention
The invention aims to provide a network function virtualization data protection method and system based on a double-chain block chain, which can solve the problem of auditability of NFV service data and improve the safety on the basis of keeping high efficiency.
In order to achieve the purpose, the invention provides the following scheme:
a network function virtualization data protection method based on a double-chain block chain comprises the following steps:
constructing a double-chain NFV model; the double-stranded NFV model comprises: an NFV layer, an under-link storage layer, and a block chain layer; the NFV layer includes: NFV infrastructure and NFV manager; the NFV layer is used for user registration, login, NFV service provision, encryption and signature, and sends service data to the down-link storage layer; the under-link storage layer is connected with the block link layer; the downlink storage layer is used for storing the service data and sending the index information of the service data to the block chain layer; the block chain layer includes: a work chain and a verification chain; the working chain is used for chaining the index information of the business data, determining the abstract value of each block in the working chain according to the index information, and uploading the abstract value of each block to the verification chain by adopting an intelligent contract;
acquiring a digest value of each block in the working chain stored in the verification chain in the double-chain NFV model, and verifying whether the index information of each block in the working chain is tampered according to the digest value;
and when the index information of each block in the working chain is not tampered, acquiring corresponding service data according to the index information of each block in the working chain, and performing auditing work.
Optionally, the work chain and the verification chain both use P2P technology to organize network nodes.
Optionally, the work chain employs private chain or federated chain technology.
Optionally, the verification chain employs a public chain technique.
Optionally, the downlink storage layer performs centralization of the service data by using a P2P decentralized storage technology.
A network function virtualization data protection system based on a dual-link blockchain, comprising:
the double-chain NFV model building module is used for building a double-chain NFV model; the double-stranded NFV model comprises: an NFV layer, an under-link storage layer, and a block chain layer; the NFV layer includes: NFV infrastructure and NFV manager; the NFV layer is used for user registration, login, NFV service provision, encryption and signature, and sends service data to the down-link storage layer; the under-link storage layer is connected with the block chain layer; the down-link storage layer is used for storing the service data and sending the index information of the service data to the block link layer; the block chain layer includes: a work chain and a verification chain; the working chain is used for chaining the index information of the business data, determining the abstract value of each block in the working chain according to the index information, and uploading the abstract value of each block to the verification chain by adopting an intelligent contract;
the verification module is used for acquiring a digest value of each block in the working chain stored in the verification chain in the double-chain NFV model and verifying whether the index information of each block in the working chain is tampered according to the digest value;
and the auditing module is used for acquiring corresponding service data according to the index information of each block in the working chain and performing auditing work when the index information of each block in the working chain is not tampered.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the network function virtualization data protection method and system based on the double-chain block chain, audit work is performed through the double-chain NFV model, wherein the work chain records interaction operation of all parties in the double-chain NFV model, and high-efficiency auditability is provided. And the verification chain provides guarantee for the data on the chain of the work chain, and ensures high reliability and credibility of auditability. The data protection is carried out through the double-chain NFV model, so that the problem that the existing single-chain NFV model cannot give consideration to high efficiency and high safety is solved, and meanwhile, the protection is provided for NFV data privacy; for the consumers of the NFV service, the model satisfies service information data integrity, traceability. When an accident or dispute occurs and an auditing mechanism is required to trace the source, the double-chain auditing action can be used for both high efficiency and safety, and a responsibility main body is locked in time so as to provide evidence for follow-up responsibility tracing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a network function virtualization data protection method based on a dual-link block chain according to the present invention;
FIG. 2 is a schematic diagram of a double-stranded NFV model structure;
FIG. 3 is a schematic diagram of a double stranded NFV model data transmission;
FIG. 4 is a schematic diagram showing the comparison of the effects of the double-stranded NFV model and the single-stranded NFV model;
fig. 5 is a schematic structural diagram of a network function virtualization data protection system based on a dual-link block chain according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention aims to provide a network function virtualization data protection method and system based on a double-chain block chain, which can solve the problem of auditability of NFV service data and improve the safety on the basis of keeping high efficiency.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic flow chart of a method for protecting network function virtualized data based on a dual-chain block chain according to the present invention, and as shown in fig. 1, the method for protecting network function virtualized data based on a dual-chain block chain according to the present invention includes:
s101, constructing a double-chain NFV model, and as shown in FIG. 2; the double-stranded NFV model comprises: an NFV layer, an under-link storage layer, and a block chain layer; the NFV layer includes: NFV infrastructure and NFV manager; the NFV layer is used for registering and logging in users, providing NFV services, encrypting and signing, and sending service data to the under-link storage layer; the under-link storage layer is connected with the block link layer; the down-link storage layer is used for storing the service data and sending the index information of the service data to the block link layer; the block chain layer includes: a work chain and a verification chain; the working chain is configured to uplink the index information of the service data, determine the digest value of each block in the working chain according to the index information, and upload the digest value of each block to the verification chain by using an intelligent contract, as shown in fig. 3; and the working chain and the verification chain adopt P2P technology to organize network nodes. Each node has the functions of node perception and data broadcasting.
In a specific embodiment, the work chain employs private chain or federation chain technology. The work chain consists of nodes maintained by NFV infrastructure providers (server providers such as the arry cloud), NFV service providers (Megaport Limited, etc.), or blockchain agencies (hundredth hyperlinks, etc.). The services in the NFV layer interact with the workflows that record the interactive operations of the parties in the NFV model and leave data on the chains that is available for review.
In a specific embodiment, the verification chain employs a public chain technique.
And sending the business data to the under-chain storage layer, wherein the business data of the NFV layer is stored by the NFV infrastructure provider, the VNF producer, the NFV service seller and the like in the under-chain storage layer by using a decentralized P2P under-chain storage technology.
The NFV business application contains operations for adding, deleting, modifying, querying, etc. data. The block generation process of the block chain is not influenced by NFV service, and NFV related mechanisms can only perform addition and query operations on a working chain. The work chain is responsible for keeping and disclosing all auditable information, needs encryption for sensitive information (such as user ID, etc.) and then chains up, and if an organization conducts malicious behavior (such as adding a large amount of meaningless information), it can be added to the blacklist, removed from NFV cooperation and blamed for.
As a specific example, the index is extracted from the original data, encrypted and left with an electronic signature, and uploaded to the work chain. Data needs to be uploaded to a work chain at the index of the storage position under the chain, sensitive information (such as user ID and the like) needs to be encrypted and then transmitted to the chain, and the mechanisms can only carry out addition or query operation on the work chain.
S102, acquiring a digest value of each block in the working chain stored in the verification chain in the double-chain NFV model, and verifying whether the index information of each block in the working chain is tampered according to the digest value;
s103, when the index information of each block in the working chain is not tampered, acquiring corresponding service data according to the index information of each block in the working chain, and performing auditing work.
Through the double-chain NFV model, the problem of auditability of NFV service data is solved, high safety is provided on the basis of keeping high efficiency, and the double-chain NFV model is shown in figure 4.
Fig. 5 is a schematic structural diagram of a network function virtualization data protection system based on a dual-chain block chain, as shown in fig. 5, the network function virtualization data protection system based on a dual-chain block chain provided by the present invention includes:
a double-chain NFV model building module 501, configured to build a double-chain NFV model; the double-stranded NFV model comprises: an NFV layer, an under-link storage layer, and a block chain layer; the NFV layer includes: NFV infrastructure and NFV manager; the NFV layer is used for user registration, login, NFV service provision, encryption and signature, and sends service data to the down-link storage layer; the under-link storage layer is connected with the block chain layer; the down-link storage layer is used for storing the service data and sending the index information of the service data to the block link layer; the block chain layer includes: a work chain and a verification chain; the working chain is used for chaining the index information of the business data, determining the abstract value of each block in the working chain according to the index information, and uploading the abstract value of each block to the verification chain by adopting an intelligent contract;
a verification module 502, configured to obtain a digest value of each block in the working chain stored in the verification chain in the double-chain NFV model, and verify whether the index information of each block in the working chain is tampered according to the digest value;
and the auditing module 503 is configured to, when the index information of each block in the work chain is not tampered, obtain corresponding service data according to the index information of each block in the work chain, and perform auditing work.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. A network function virtualization data protection method based on a double-chain block chain is characterized by comprising the following steps:
constructing a double-chain NFV model; the double-stranded NFV model comprises: an NFV layer, an under-link storage layer, and a block chain layer; the NFV layer includes: NFV infrastructure and NFV managers; the NFV layer is used for user registration, login, NFV service provision, encryption and signature, and sends service data to the down-link storage layer; the under-link storage layer is connected with the block link layer; the down-link storage layer is used for storing the service data and sending the index information of the service data to the block link layer; the block chain layer includes: a work chain and a verification chain; the working chain is used for chaining the index information of the business data, determining the abstract value of each block in the working chain according to the index information, and uploading the abstract value of each block to the verification chain by adopting an intelligent contract;
acquiring a digest value of each block in the working chain stored in the verification chain in the double-chain NFV model, and verifying whether the index information of each block in the working chain is tampered according to the digest value;
and when the index information of each block in the working chain is not tampered, acquiring corresponding service data according to the index information of each block in the working chain, and performing auditing work.
2. The method according to claim 1, wherein the worker chain and the verification chain both use P2P technology to organize network nodes.
3. The method for network function virtualization data protection based on dual-link block chains according to claim 1, wherein the work chain employs private chain or alliance chain technology.
4. The method according to claim 1, wherein the verification chain employs a public chain technique.
5. The method according to claim 1, wherein the down-link storage layer performs centralized storage of the service data by using a P2P decentralized storage technology.
6. A network function virtualization data protection system based on a dual-link blockchain, comprising:
the double-chain NFV model building module is used for building a double-chain NFV model; the double-stranded NFV model comprises: an NFV layer, an under-link storage layer, and a blockchain layer; the NFV layer includes: NFV infrastructure and NFV managers; the NFV layer is used for user registration, login, NFV service provision, encryption and signature, and sends service data to the down-link storage layer; the under-link storage layer is connected with the block link layer; the downlink storage layer is used for storing the service data and sending the index information of the service data to the block chain layer; the block chain layer includes: a work chain and a verification chain; the working chain is used for chaining the index information of the business data, determining the abstract value of each block in the working chain according to the index information, and uploading the abstract value of each block to the verification chain by adopting an intelligent contract;
the verification module is used for acquiring a digest value of each block in the working chain stored in the verification chain in the double-chain NFV model and verifying whether the index information of each block in the working chain is tampered according to the digest value;
and the auditing module is used for acquiring corresponding service data according to the index information of each block in the working chain and performing auditing work when the index information of each block in the working chain is not tampered.
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