CN106572113A - System and method for generating compliance rule of IEC62351 secure transmission protocols based on TTCN-3 language - Google Patents
System and method for generating compliance rule of IEC62351 secure transmission protocols based on TTCN-3 language Download PDFInfo
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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
- H04L63/20—Network architectures or network communication protocols for network security for managing network security; network security policies in general
- H04L63/205—Network architectures or network communication protocols for network security for managing network security; network security policies in general involving negotiation or determination of the one or more network security mechanisms to be used, e.g. by negotiation between the client and the server or between peers or by selection according to the capabilities of the entities involved
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Abstract
The invention relates to a system and a method for generating a compliance rule of IEC62351 secure transmission protocols based on a TTCN language. According to the invention, compliance rule detection analysis is performed on the IEC62351 secure transmission protocols, and whether the IEC62351 secure transmission protocols conform to the compliance rule or not is judged on the basis of the TTCN-3 language, thereby acting as a judgment basis for helping manufacturers to analyze whether the secure transmission protocols thereof conform to the compliance rule or not. According to detection analysis method provided by the invention, a compliance rule model is enabled to be built, the feasibility of the method is verified, manufacturers are helped to analyze whether the secure transmission protocols thereof conform to the compliance rule or not, and the secure transmission protocols of different manufacturers are enabled to be unified, thereby reducing the waste of a lot of manpower and material resources during protocol conversion, and realizing seamless communication.
Description
Technical field
The present invention relates to a kind of contract generation method, and in particular to a kind of IEC62351 based on TTCN-3 language is passed safely
Defeated stipulations compliance rule generates system and method.
Background technology
The communication network of transformer station is had been realized in from the RS485 of early stage to fieldbus, then to the progress of Ethernet, phase
That what is answered just has various communication protocols such as CDT, IEC60870-5-101,103,104.In order to inside various automated systems
Various real time information are accurately and rapidly collected, process and transmit, International Organization for Standardization has formulated a unified standard
《IEC61850 substation communication networks and system》.The standard specifies the base of intelligent Substation System System Seamless Communication Architecture from now on
Plinth, will obtain increasingly extensive application.All it is to be transmitted with clear-text way yet with the Content of Communication in transformer substation system,
And no any safety measure is protected by transmitting procedure, with transformer station's remote maintenance, the development of remote control technology,
Transformer station is faced with safely stern challenge with the remote data communication of dispatching control center.Any invasion data communication network
Person, once critical data is carried out intercepting and capturing, distorts, forges, it will cause to switch malfunction, tripping, upload data perturbation and adjust
Mistake of parameter etc., causes major accident.
For the problem of the disappearance of safety prevention measure present in current power systematic communication network, International Electrotechnical Commission
57 technical committees below the 15th working group's tailor standard --- IEC of power system information secure context
62351.62351 series standards of IEC are while information system security countermeasure is provided, it is also considered that communication protocol safety.Now
With the development of information technology, the information security of power industry becomes the major issue for affecting power system stability operation, IEC
The proposition of 62351 standards is provided with network security to Substation Communication System and is ensured.62351 standards of IEC have been related to electric power
The various aspects of system data communication：IEC 62351-3 is the safety comprising ICP/IP protocol, IEC 62351-4 be comprising
The safety of MMS, IEC62351-5 are the safety to IEC 60870-5 and derivation standard, and IEC 62351-6 is to IEC
The safety of peer to peer communication protocol (real-time Communication for Power) in 61850.These different safety criterions, the agreement serviced due to them
Demand for security is different, has different safety measures and safe practice.
The purpose for formulating safe transmission stipulations compliance rule is to strengthen the compatibility of product between different manufacturers, i.e., in fact
Existing seamless communication, helps producer to analyze whether its safe transmission stipulations meets compliance rule, makes the safe transmission of different manufacturers
Stipulations are unified, and so as to a large amount of manpower and materials for reducing causing during protocol conversion are wasted, are that manufacturer and user bring interests.In order to
The mutual compatibility of guarantee equipment, International Electrotechnical Commission formulate related data and communication security standard, i.e., compare in the world
More successful standard agreement IEC62351.And the Unified Explanation analysis of agreement is that the practice and extension to a standard agreement plays non-
Often important effect, so in terms of analysis, we apply TTCN-3 language.This is as TTCN-3 language fully can show point
Behavior between analysis system and tested protocol entity, so as to judge the behavior of protocol realization, what is finally drawn by or fail sentences
Certainly, therefore, with the analysis process that TTCN-3 language is represented be safe transmission stipulations compliance rule generating method basis and close
Key.The empirical statistics of KEMA shows that carry out the equipment and system of IEC protocol-compliant analyses in KEMA, 60% does not once pass through
, it is necessary to carry out the 2nd analysis.After the importance of safe transmission stipulations compliance rule for recognizing agreement, safety is passed
The analysis of defeated stipulations compliance rule maintains substantially the situation of synchronized development with product under the contract exploitation.As can be seen here, agreement
The analysis of safe transmission stipulations compliance rule is that electric automation product throws people using the front only stage which must be passed by.
The content of the invention
To solve above-mentioned deficiency of the prior art, it is an object of the invention to provide the IEC62351 based on TTCN-3 language
Safe transmission stipulations compliance rule generates system and method, by IEC62351 safe transmissions stipulations are carried out with compliance rule
According to TTCN-3 language, detection and analysis, judges whether which meets compliance rule, be to help producer to analyze its safe transmission stipulations
Whether meet compliance rule and do judging basis.
The purpose of the present invention is realized using following technical proposals：
The present invention provides a kind of IEC62351 safe transmission stipulations compliance rule generation system based on TTCN-3 language,
Which thes improvement is that the generation system includes executable analysis set of modules, coding/decoding module and the adapter being sequentially connected
Module；The adaptor module is connected with system under test (SUT), carries out intercommunication；The generation system also includes log pattern, institute
State log pattern monitor respectively communicate between executable analysis set of modules and the coding module of coding/decoding module, coding module with fit
Communication between orchestration module, communicate between adaptor module and the decoder module in coding/decoding module and adaptor module and
The various events communicated between system under test (SUT).
Further, the executable analysis set of modules is used for the analytical data transmission of the IEC62351 agreements that will be sent
To coding/decoding module；
The coding/decoding module is used for the analytical data codec functions of the IEC62351 agreements for realizing system, with convenient
The port of TTCN-3 outwardly sends and received message；
The adaptor module is used to receive the analytical data after codec modules coding, and is sent to tested system
The port of system and decoder module；
The various events that the log pattern is used for during record analyses, show staff, convenient analysis and
System is supervised；
The analysis process includes communicating between executable analysis set of modules and coding/decoding module, coding module and adapter
Communication between module, communicate between adaptor module and decoder module and adaptor module and system under test (SUT) between communicate.
Further, the analytical data be executable analysis set of modules specify for and intelligent substation unit between
Communication IEC62351 protocol datas.
Further, the coding/decoding module includes coding module and decoder module, and the coding module is for sending out
The analytical data of the IEC62351 agreements sent is encoded；The decoder module is for disappearing of receiving generation system adapter
Breath data are parsed, and corresponding data are combined into the message of TTCN-3 data types to express, are easy to executable point of TTCN-3
Analysis set of modules is analyzed to analytical data and matching operation.
The present invention also provides a kind of generation method of IEC62351 safe transmissions stipulations compliance rule generation system, and which changes
It is that the generation method comprises the steps to enter part：
1) analytical data that can perform the IEC62351 agreements that analysis set of modules will send is sent to coding/decoding module；
2) coding/decoding module realizes the analytical data codec functions of the IEC62351 agreements of system, to facilitate TTCN-3's
Port outwardly sends and received message；
3) adaptor module is used to receive the analytical data after codec modules coding, and is sent to system under test (SUT)
Port and codec modules decoder module；
4) the various events during log pattern record analyses, show staff, convenient to analyze and to tested
System carries out supervising whether testing equipment possesses TLS Transport Layer Security functions.
Further, the step 1) in, analytical data be executable analysis set of modules specify for transformer station's intelligence
The IEC62351 protocol datas communicated between energy unit；In executable analysis set of modules, analytical data and logic are retouched
State, it is fixed including the message format definition to IEC62351 safe transmission stipulations, source template definition, analysis system component and port
Justice, instance analysis and analysis and Control.
Further, the step 2) in, the coder module of the coding/decoding module is by the master data class of TTCN-3
The message format of type and the IEC62351 safe transmission stipulations being made up of basic data type is encoded into and is carried out with adaptor module
The data form of network transmission；The message data that transmission protocol compliance analysis system adapter is received is carried out by decoder module
Corresponding data are combined into the message of TTCN-3 data types to express by parsing, are easy to the executable analysis set of modules pair of TTCN-3
Analytical data is analyzed and matching operation.
Further, the step 3) in, the adaptor module be used for be responsible for transmission protocol compliance analysis system with
The communication function of system under test (SUT), in IEC62351 safe transmission stipulations, the message of IEC62351 by TCP transport layer agreement come
Transmission, generates system adapter using the corresponding interface of operating system to realize transmission protocol compliance analysis system with tested system
The communication of system.
Further, the step 4) in, the analysis process include executable analysis set of modules and coding/decoding module it
Between communication, communicate between coding module and adaptor module, communicate and adapter between adaptor module and decoder module
Communicate between module and system under test (SUT)；
The various events include the beginning and reception of example, send and receive data, result judgement and mistake occur.
In order to the embodiment to disclosing some in terms of have a basic understanding, shown below is simple summary.Should
Summarized section is not extensive overview, nor key/critical component is determined or describes the protection domain of these embodiments.
Its sole purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
Compared with immediate prior art, the excellent effect that the technical scheme that the present invention is provided has is：
The present invention provide based on TTCN-3 language IEC62351 safe transmission stipulations compliance rule generation system and
According to TTCN-3 language, method, by IEC62351 safe transmissions stipulations are carried out with compliance rule detection analysis, judges which is
It is no to meet compliance rule, it is to help producer to analyze its safe transmission stipulations and whether meet compliance rule to do judging basis.
1) present invention helps producer to analyze whether its safe transmission stipulations meets conjunction rule by setting up compliance rule model
Property rule, unify the safe transmission stipulations of different manufacturers.
2) by setting up compliance rule model, a large amount of manpower and materials for reducing causing during protocol conversion are wasted the present invention,
Realize seamless communication.
3) by carrying out compliance rule detection to different safe transmission stipulations, the present invention judges whether which meets
IEC62351 standards require, provide guidance for different agreement stipulations and advise.
For above-mentioned and related purpose, one or more embodiments include will be explained in and in claim below
In the feature that particularly points out.Description below and accompanying drawing describe some illustrative aspects in detail, and its indicate be only
Some modes in the utilizable various modes of principle of each embodiment.Other benefits and novel features will be with
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be will include all these aspects and they
Equivalent.
Description of the drawings
Fig. 1 is that the IEC62351 safe transmission stipulations compliance rule based on TTCN-3 language that the present invention is provided generates system
The structure chart of system；
Fig. 2 be the present invention provide experiment in GOOSE agreements for Replay Attack compliance detect flow chart；
Fig. 3 is the flow chart of the generation of compliance rule and analysis in the experiment that the present invention is provided.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further detail.
The following description and drawings fully illustrate specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments can include structure, logic, electric, process and other changes.Embodiment
Possible change is represented only.Unless explicitly requested, otherwise individually component and function are optional, and the order for operating can be with
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This
The scope of bright embodiment includes the gamut of claims, and all obtainable equivalent of claims
Thing.Herein, these embodiments of the invention individually or generally can be represented with term " invention " that this is only
For convenience, and if in fact disclosing the invention more than, it is not meant to automatically limit the scope of the application to appoint
What single invention or inventive concept.
The present invention provides a kind of IEC62351 safe transmission stipulations compliance rule generation system based on TTCN-3 language,
Device structural representation is as shown in figure 1, including executable analysis set of modules, coding/decoding module and the adaptor module being sequentially connected；
The adaptor module is connected with system under test (SUT), carries out intercommunication；The generation system also includes log pattern, the daily record
Module monitor respectively communicate between executable analysis set of modules and the coding module of coding/decoding module, coding module and adapter mould
Communicate between block, communicate and adaptor module and tested system between adaptor module and the decoder module in coding/decoding module
The various events communicated between system.
Executable analysis set of modules is used for the analytical data of the IEC62351 agreements that will be sent and is sent to coding/decoding module；
Analytical data is the IEC62351 agreements for the communication between intelligent substation unit that executable analysis set of modules is specified
Data.
Coding/decoding module is used for the analytical data codec functions of the IEC62351 agreements for realizing system, to facilitate TTCN-3
Port outwardly send and received message；Adaptor module is used to receive the analysis number after codec modules coding
According to, and it is sent to port and the decoder module of system under test (SUT)；The various events that log pattern is used for during record analyses, exhibition
Show to staff, it is convenient to analyze and system is supervised；Analysis process includes executable analysis set of modules and encoding and decoding
Communication between module, communicate between coding module and adaptor module, communicate between adaptor module and decoder module and
Communicate between adaptor module and system under test (SUT).
Coding/decoding module includes coding module and decoder module, and the coding module is for IEC62351 associations to be sent
The analytical data of view is encoded；The decoder module is solved for will generate the message data that receives of system adapter
Corresponding data are combined into the message of TTCN-3 data types to express by analysis, are easy to the executable analysis set of modules of TTCN-3 to dividing
Analysis data are analyzed and matching operation.
The present invention also provides a kind of generation method of IEC62351 safe transmissions stipulations compliance rule generation system, including
Following step：
1) analytical data that can perform the IEC62351 agreements that analysis set of modules will send is sent to coding/decoding module；Can
The core that analysis set of modules is compliance rule generating method is performed, this part is write with TTCN-3 language.At executable point
In analysis set, analytical data and logic to be described, mainly include that the message format to IEC62351 safe transmission stipulations is fixed
Justice, source template definition, analysis system component and port definition, instance analysis, analysis and Control etc..
2) coding/decoding module realizes the analytical data codec functions of the IEC62351 agreements of system, to facilitate TTCN-3's
Port outwardly sends and received message；Coding/decoding module realizes the data codec functions of system.Wherein coded portion will
The message format of the basic data type of TTCN-3 and the IEC62351 safe transmission stipulations being made up of these basic data types
Be encoded into carry out the data form of network transmission with adapter；Transmission protocol compliance analysis system is adapted to by decoded portion
The message data that device is received is parsed, and corresponding data is combined into the message of TTCN-3 data types to express, is easy to TTCN-
3 executable analysis sets are analyzed to data, matchs etc. and operating.
3) adaptor module is used to receive the analytical data after codec modules coding, and is sent to system under test (SUT)
Port and codec modules decoder module；Adaptor module is mainly responsible for transmission protocol compliance analysis system and quilt
The communication function of examining system, in IEC62351 safe transmission stipulations, the message of IEC62351 is by transport layer protocols such as TCP
Come what is transmitted, system adapter needs using the corresponding interface of operating system to realize transmission protocol compliance analysis system and quilt
The communication of examining system.
4) the various events during log pattern record analyses, show staff, convenient to analyze and to tested
System carries out supervising whether testing equipment possesses TLS Transport Layer Security functions.The event of common trigger recording has opening for example
Begin, receive, mistake etc. occur in transmission, receiving data, result judgement.
Embodiment
Based on the IEC62351 safe transmission stipulations compliance rule generating methods of TTCN-3 language, by IEC62351
Safe transmission stipulations carry out compliance rule detection analysis, judge whether which meets compliance rule according to TTCN-3 language, are
Help producer to analyze its safe transmission stipulations and whether meet compliance rule and do judging basis.Below with regard to IEC62351 safe transmissions
GOOSE Replay Attacks protection in stipulations carries out test analysis, analyzes its compliance rule generating method feasibility.The method has
There are following steps.
Step 1：GOOSE Replay Attack protection process is as follows：
Step 1.1：GOOSE message is decoded into (asn1 decodings)；
Step 1.2：Extract the time t of decoded GOOSE message, state stNum and allow the generation time
Content vgoosetime of timeAllowedtoLive fields, vstnum, vtimeallowedtolive；
Step 1.3：Obtain current system time vsystime；
Step 1.4：Relatively present system time vsystime and message time vgoosetime differs by more than 2 minutes, then
Message is abandoned, is terminated；
Step 1.5：State recent_stnum being most recently received is found from state historical record, if history
Record does not have, then take the minima of state number, and current state number is recorded in historical record；
Step 1.6：Compare GOOSE message state vstnum and nearest state recent_stnum relation,
I () such as recent_stnum is not up to maximum rating number, and vstnum is less than recent_stnum, abandons message
(ii) as recent_stnum is not up to maximum rating number, and allow that life span vtimeallowedtolive surpasses
When, abandon message
Step 1.7：If recent_stnum reaches maximum, recent_stnum is replaced by 0；
Step 1.8：If there is time-out, recent_stnum is set to 0.
Step 2：Protected according to the GOOSE Replay Attacks in IEC62351 safe transmission stipulations, write the abstract surveys of TTCN-3
Examination set.When writing abstract test suite, step is as follows：
Step 2.1：The TTCN-3 user-defined dada types of request and response are designed according to the functional requirement of different elements；
Step 2.2：Design testing and analysis data template corresponding with TTCN-3 user-defined dada types；
Step 2.3：Corresponding function and test analysis use-case are designed according to the interactive mode of different elements.
Step 3：Abstract test suite is generated as into executable analysis set.It is compiled by TTCN-3 compilers, can be by
The abstract test suite for writing is generated as executable analysis set, and the form that can perform analysis set is a packed jar file.
Compiler can be tester's independent development, it is also possible to use open source resources.
Step 4：Write corresponding system under test (SUT) adapter and coding decoder.System under test (SUT) adapter is whole test system
The core of system, the main execution for being responsible for control test, and interact with bottom layer realization part and coding decoder.System adaptation
Device mainly by realizing TriCommunicationSA interfaces and TriPlatformPA interfaces in 5 interface methods completing.Compile
Code decoder is responsible for the Handshake Protocol content in the Part III of IEC62351 safe transmission stipulations is encoded and decoded, and is
Test execution provides service.
Step 5：According to the result of test execution, judge that the GOOSE Replay Attacks in IEC62351 safe transmission stipulations are prevented
The correctness that shield is realized.After test analysis example to be performed is selected, test analysis platform has been performed and can provide result of determination, knot
Fruit is divided into two class of pass and error, if test analysis example is gone wrong in the process of implementation, provides the prompting of fail.
By using the determination method of the present invention so that set up compliance rule model, and verify the method can
Row, helps producer to analyze whether its safe transmission stipulations meets compliance rule, makes the safe transmission stipulations of different manufacturers unite
One, wasted with a large amount of manpower and materials for reducing causing during protocol conversion, realize seamless communication.
Above example is only to illustrate technical scheme rather than a limitation, although reference above-described embodiment pair
The present invention has been described in detail, and those of ordinary skill in the art still can enter to the specific embodiment of the present invention
Row modification or equivalent, these any modification or equivalents without departing from spirit and scope of the invention, in application
Within the claims of the pending present invention.
Claims (9)
1. a kind of IEC62351 safe transmission stipulations compliance rule generation system based on TTCN-3 language, it is characterised in that
The generation system includes executable analysis set of modules, coding/decoding module and the adaptor module being sequentially connected；The adapter
Module is connected with system under test (SUT), carries out intercommunication；The generation system also includes log pattern, and the log pattern is supervised respectively
Depending on communicating between executable analysis coding module of the set of modules with coding/decoding module, leading between coding module and adaptor module
Letter, communicate between adaptor module and the decoder module in coding/decoding module and adaptor module and system under test (SUT) between it is logical
The various events of letter.
2. IEC62351 safe transmissions stipulations compliance as claimed in claim 1 rule generation system, it is characterised in that described
Executable analysis set of modules is used for the analytical data of the IEC62351 agreements that will be sent and is sent to coding/decoding module；
The coding/decoding module is used for the analytical data codec functions of the IEC62351 agreements for realizing system, to facilitate TTCN-3
Port outwardly send and received message；
The adaptor module is used to receive the analytical data after codec modules coding, and is sent to system under test (SUT)
Port and decoder module；
The various events that the log pattern is used for during record analyses, show staff, convenient to analyze and to being
System is supervised；
The analysis process includes communicating between executable analysis set of modules and coding/decoding module, coding module and adaptor module
Between communication, communicate between adaptor module and decoder module and adaptor module and system under test (SUT) between communicate.
3. IEC62351 safe transmissions stipulations compliance as claimed in claim 2 rule generation system, it is characterised in that described
Analytical data is the IEC62351 agreements for the communication between intelligent substation unit that executable analysis set of modules is specified
Data.
4. IEC62351 safe transmissions stipulations compliance as claimed in claim 2 rule generation system, it is characterised in that described
Coding/decoding module includes coding module and decoder module, and the coding module is for the analysis to IEC62351 agreements to be sent
Data are encoded；The decoder module, will correspondence for the message data that generation system adapter is received is parsed
Data be combined into the message of TTCN-3 data types to express, be easy to the executable analysis set of modules of TTCN-3 to carry out analytical data
Analysis and matching operation.
5. a kind of IEC62351 safe transmission stipulations compliance rule generation system as any one of claim 1-4
Generation method, it is characterised in that the generation method comprises the steps：
1) analytical data that can perform the IEC62351 agreements that analysis set of modules will send is sent to coding/decoding module；
2) coding/decoding module realizes the analytical data codec functions of the IEC62351 agreements of system, to facilitate the port of TTCN-3
Outwardly send and received message；
3) adaptor module is used to receive the analytical data after codec modules coding, and is sent to the end of system under test (SUT)
The decoder module of mouth and codec modules；
4) the various events during log pattern record analyses, show staff, convenient to analyze and to system under test (SUT)
Carry out supervising whether testing equipment possesses TLS Transport Layer Security functions.
6. generation method as claimed in claim 5, it is characterised in that the step 1) in, analytical data is executable analysis
The IEC62351 protocol datas for the communication between intelligent substation unit that set of modules is specified；In executable analysis cover die
In block, analytical data and logic are described, including the message format definition to IEC62351 safe transmission stipulations, message mould
Plate definition, analysis system component and port definition, instance analysis and analysis and Control.
7. generation method as claimed in claim 5, it is characterised in that the step 2) in, the coding of the coding/decoding module
The message of the IEC62351 safe transmission stipulations that device module is constituted by the basic data type of TTCN-3 and by basic data type
Said shank is into the data form that network transmission is carried out with adaptor module；Transmission protocol compliance is analyzed by decoder module
The message data that system adapter is received is parsed, and corresponding data is combined into the message of TTCN-3 data types to express, just
Analytical data is analyzed and matching operation in TTCN-3 executable analysis set of modules.
8. generation method as claimed in claim 5, it is characterised in that the step 3) in, the adaptor module is used to bear
The communication function of duty transmission protocol compliance analysis system and system under test (SUT), in IEC62351 safe transmission stipulations,
The message of IEC62351 is transmitted by TCP transport layer agreement, is generated system adapter and is come using the corresponding interface of operating system
Realize the communication of transmission protocol compliance analysis system and system under test (SUT).
9. generation method as claimed in claim 5, it is characterised in that the step 4) in, the analysis process includes holding
Communicate, communicate between coding module and adaptor module between row analysis set of modules and coding/decoding module, adaptor module and solution
Communicate between communication and adaptor module and system under test (SUT) between code device module；
The various events include the beginning and reception of example, send and receive data, result judgement and mistake occur.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114745152A (en) * | 2022-02-28 | 2022-07-12 | 国网江苏省电力有限公司淮安供电分公司 | Intrusion detection method and system based on IEC61850GOOSE message operation situation model |
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