CN109412894B - Method and device for testing reliability of information system - Google Patents
Method and device for testing reliability of information system Download PDFInfo
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- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H04L41/06—Management of faults, events, alarms or notifications
Abstract
The invention discloses a method and a device for checking the reliability of an information system, wherein all system nodes in the information system are sequentially used as target nodes, the target nodes are set to be in a fault state, and all system nodes except the target nodes are set to be in a normal operation state; judging whether the system function of the information system is abnormal or not when each system node is used as a target node; if the system functions of the information system are not abnormal when all the system nodes are sequentially used as target nodes, judging that the information system does not have single-point hidden danger; and if the system functions of the information system are abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system. The method judges whether the system function is abnormal or not by self-setting the fault node, and checks the single-point hidden danger in the information system so as to check the reliability of the information system.
Description
Technical Field
The invention relates to the field of data processing, in particular to a method and a device for testing the reliability of an information system.
Background
The information system is a man-machine integrated system composed of computer hardware, network and communication equipment, computer software, information resource, information user and regulation system and aimed at processing information flow. When the node equipment fails and stops operating, the information system may be paralyzed and cannot provide information transmission service continuously, and reliability check needs to be performed on the information system to ensure the stability of the information system.
The existing information system reliability inspection method is to manually check whether each node device in the actual deployment scheme of the information system belongs to single-node deployment, and further judge whether the system meets the requirement of N-1 reliability. The existing reliability detection method is long in time consumption and low in efficiency due to the adoption of a manual inspection mode, particularly for a large-scale information system with a complex structure, the number of nodes is large, the network architecture is huge, and the incidence relation is complex, so that the efficiency and the accuracy of the manual detection of the reliability of the information system are greatly reduced, the single-point hidden danger is difficult to comprehensively and quickly mine, the omission easily occurs, and the hidden danger is caused to the stable operation of the information system.
Disclosure of Invention
The invention provides a method and a device for checking the reliability of an information system, which can solve the problem that in the prior art, the efficiency and the accuracy are low and hidden danger is caused to the stable operation of the information system because the reliability of the information system is checked manually.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for verifying the reliability of an information system comprises the following steps:
sequentially taking all system nodes in an information system as target nodes, setting the target nodes to be in a fault state, and setting all system nodes except the target nodes to be in a normal operation state;
judging whether the system function of the information system is abnormal or not when each system node is used as a target node;
if the system functions of the information system are not abnormal when all the system nodes are sequentially used as target nodes, judging that the information system does not have single-point hidden danger;
and if the system function of the information system is abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system.
Optionally, the setting the target node to the fault state and setting all system nodes except the target node to the normal operation state includes:
and setting the state value of the target node as a fault value, and setting the state values of all system nodes except the target node as normal values.
Optionally, when each system node is determined to be a target node, determining whether a system function of the information system is abnormal includes:
calculating the path state value of each information transmission path according to the state value of the target node and the state values of all system nodes except the target node; the system nodes comprise terminal nodes and network nodes; the information transmission path is an information transmission path which is formed by starting one terminal node from one or more network nodes and ending the other terminal node in two terminal nodes in a non-same terminal node group; the terminal node group is obtained by dividing all terminal nodes in the information system according to the same service function;
calculating the association state value between every two terminal node groups according to the path state values of all information transmission paths between the two terminal node groups;
calculating a system state value according to the correlation state value;
and judging whether the system function of the information system is abnormal or not according to the system state value.
Optionally, the calculating a path state value of each information transfer path according to the state value of the target node and the state values of all system nodes except the target node includes:
if the system node in the information transmission path has the target node, the path state value of the information transmission path is a fault value;
and if the system node in the information transfer path does not have the target node, the path state value of the information transfer path is a normal value.
Optionally, the calculating an association state value between each two terminal node groups according to the path state values of all information transmission paths between the two terminal node groups includes:
if a path state value with a normal value exists in the path state values of all information transmission paths between the two terminal node groups, the association state value between the two terminal node groups is a normal value;
and if the path state values of all the information transmission paths between the two terminal node groups are fault values, the associated state value between the two terminal node groups is a fault value.
Optionally, the calculating a system state value according to the associated state value includes:
if the correlation state value with the fault value exists in the correlation state values, the system state value is the fault value;
and if the correlation state value with the fault value does not exist in the correlation state values, the system state value is a normal value.
An apparatus for verifying the authenticity of an information system, comprising:
the system comprises a setting unit, a fault detection unit and a fault detection unit, wherein the setting unit is used for sequentially taking all system nodes in an information system as target nodes, setting the target nodes as fault states, and setting all system nodes except the target nodes as normal operation states;
the first judging unit is used for judging whether the system function of the information system is abnormal or not when each system node is taken as a target node;
a second determining unit, configured to determine that there is no single-point hidden danger in the information system if there is no abnormality in system functions of the information system when all the system nodes are sequentially used as target nodes; and if the system function of the information system is abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system.
Optionally, the setting unit includes:
and the setting subunit is used for setting the state value of the target node as a fault value and setting the state values of all system nodes except the target node as normal values.
Optionally, the first determining unit includes:
the first calculation unit is used for calculating the path state value of each information transmission path according to the state value of the target node and the state values of all system nodes except the target node; the system nodes comprise terminal nodes and network nodes; the information transmission path is an information transmission path which is formed by starting one terminal node from one or more network nodes and ending the other terminal node in two terminal nodes in a non-same terminal node group; the terminal node group is obtained by dividing all terminal nodes in the information system according to the same service function;
a second calculating unit, configured to calculate an association state value between each two terminal node groups according to the path state values of all information transmission paths between the two terminal node groups;
the third calculating unit is used for calculating a system state value according to the correlation state value;
and the third judging unit is used for judging whether the system function of the information system is abnormal or not according to the system state value.
Optionally, the first computing unit is configured to, if the system node in the information transfer path has the target node, determine that a path state value of the information transfer path is a fault value; and if the system node in the information transfer path does not have the target node, the path state value of the information transfer path is a normal value.
Optionally, the second calculating unit is configured to determine that the associated state value between the two terminal node groups is a normal value if a path state value whose value is a normal value exists in the path state values of all information transmission paths between the two terminal node groups; and if the path state values of all the information transmission paths between the two terminal node groups are fault values, the associated state value between the two terminal node groups is a fault value.
Optionally, the third calculating unit is configured to determine that the system state value is a fault value if the associated state value with a value that is a fault value exists in the associated state values; and if the correlation state value with the fault value does not exist in the correlation state values, the system state value is a normal value.
According to the technical scheme, the method and the device for checking the reliability of the information system disclosed by the invention are used for judging whether the system function of the information system is abnormal or not when each system node is used as a target node in a fault state; if all the system nodes are sequentially used as target nodes and the system functions of the information system are not abnormal, judging that the information system does not have single-point hidden danger; and if the system functions of the information system are abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system. The method judges whether the system function is abnormal or not by self-setting the fault node, and checks the single-point hidden danger in the information system so as to check the reliability of the information system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flowchart of a method for checking reliability of an information system according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating the steps for determining whether the system function of the information system is abnormal when the system node is the target node;
FIG. 3 is a network topology diagram of an information system employed in another embodiment of the present invention;
fig. 4 is a schematic diagram of an apparatus for checking reliability of an information system according to an embodiment of 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method and a device for checking the reliability of an information system, which can solve the problem that in the prior art, the efficiency and the accuracy are low and hidden danger is caused to the stable operation of the information system because the reliability of the information system is checked manually.
As shown in fig. 1, an embodiment of the present invention discloses a method for checking reliability of an information system, including the following steps:
s101, sequentially taking all system nodes in an information system as target nodes, setting the target nodes to be in a fault state, and setting all system nodes except the target nodes to be in a normal operation state.
Optionally, the setting the target node to the fault state and setting all system nodes except the target node to the normal operation state includes:
setting the state value of the target node as a fault value, and setting the state values of all system nodes except the target node as normal values
S102, judging whether the system function of the information system is abnormal or not when each system node is used as a target node.
Optionally, as shown in fig. 2, when the system node is determined as the target node, the step of determining whether the system function of the information system is abnormal is as follows:
s201, calculating the path state value of each information transmission path according to the state value of the target node and the state values of all system nodes except the target node.
In step S201, the system node includes a terminal node and a network node, and it should be noted that the information system mainly includes objects such as an application server device, a storage server device, and a network device.
The invention sets the network equipment object for information transmission and transmission in the information system as the network node, and the network node is connected with each terminal node.
The information transmission path is an information transmission path which is formed by starting one terminal node from one terminal node and passing through one or more network nodes and ending the other terminal node in two terminal nodes in a non-same terminal node group.
And the terminal node group is obtained by dividing all terminal nodes in the information system according to the same service function. For example, all terminal nodes having an application service function are divided into the same terminal node group, all terminal nodes having a database service function are divided into the same terminal node group, and all terminal nodes having a storage service function are divided into the same terminal node group, where the terminal node group includes at least one terminal node.
Optionally, the calculating a path state value of each information transfer path according to the state value of the target node and the state values of all system nodes except the target node includes:
and if the system node in the information transmission path has the target node, the path state value of the information transmission path is a fault value.
And if the system node in the information transfer path does not have the target node, the path state value of the information transfer path is a normal value.
S202, calculating the association state value between every two terminal node groups according to the path state values of all information transmission paths between the two terminal node groups.
Optionally, the calculating an association state value between each two terminal node groups according to the path state values of all information transmission paths between the two terminal node groups includes:
and if the path state values of all the information transmission paths between the two terminal node groups have the path state value which is a normal value, the association state value between the two terminal node groups is the normal value.
And if the path state values of all the information transmission paths between the two terminal node groups are fault values, the associated state value between the two terminal node groups is a fault value.
And S203, calculating a system state value according to the associated state value.
Optionally, the calculating a system state value according to the associated state value includes:
and if the correlation state value with the fault value exists in the correlation state values, the system state value is the fault value.
And if the correlation state value with the fault value does not exist in the correlation state values, the system state value is a normal value.
And S204, judging whether the system function of the information system is abnormal or not according to the system state value.
If the system state value is a fault value, judging that the system function of the information system is abnormal; and if the system state value is a normal value, judging that the system function of the information system is not abnormal.
S103, if the system functions of the information system are not abnormal when all the system nodes are sequentially used as target nodes, judging that the information system does not have single-point hidden danger.
And S104, if the system functions of the information system are abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system.
It should be noted that, when an independent node device in the system fails and stops operating, the system function fails, and at this time, the independent node is referred to as a single-point hidden danger.
After step S102 is completed, it is known whether the function of the information system is abnormal when all system nodes in the information system are individually failed, and if all the results are the results that the information system is not abnormal, it indicates that there is no single-point hidden danger in the information system, and the reliability of the information system is high; if one or more of the results indicate that the information system is abnormal in function, it indicates that the system node corresponding to the obtained information system abnormal in function result belongs to the single-point hidden danger, and the single-point hidden danger exists in the information system, so that the reliability evaluation result of the information system is influenced.
In the method for checking reliability of an information system disclosed in this embodiment, it is determined whether a system function of the information system is abnormal when each system node is used as a target node in a fault state; if all the system nodes are sequentially used as target nodes and the system functions of the information system are not abnormal, judging that the information system does not have single-point hidden danger; and if the system functions of the information system are abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system. The method judges whether the system function is abnormal or not by self-setting the fault node, and checks the single-point hidden danger in the information system so as to check the reliability of the information system.
Based on the method for checking the reliability of the information system disclosed by the embodiment of the invention, another embodiment of the invention discloses a specific implementation process of the method for checking the reliability of the information system, which comprises the following steps:
as shown in fig. 3, which is a network topology diagram of the information system adopted in this embodiment, the information system includes 11 system nodes, and Nn is used to represent the nth system node, all the system nodes in fig. 3 are respectively represented as N1 and N2 … … N11, where N1, N2, N3, N4, and N11 are terminal nodes, and N5-N10 are network nodes.
Since the terminal nodes N1 and N2 are both application servers having an application service function, N1 and N2 are divided into the same terminal node group, which is denoted as a first terminal node group C1, and similarly, the terminal nodes N3 and N4 are both database servers having a database service function, N3 and N4 are divided into the same terminal node group, which is denoted as a second terminal node group C2, and only one terminal node having a storage service function is N11, then N11 is divided into one terminal node group separately, which is denoted as a third terminal node group C3.
Traversing all information transfer paths between terminal node groups, and using Ljk to represent the kth path in the jth association relationship, all information transfer paths between terminal node groups C1 and C3 include:
L11＝>[N1，N5，N8，N11]、L12＝>[N1，N6，N8，N11]、L13＝>[N2，N6，N8，N11]、L14＝>[N2，N7，N9，N11]、L15＝>[N2，N7，N10，N11]。
all information transfer paths between end node groups C2 and C3 include:
L21＝>[N3，N6，N8，N11]、L22＝>[N3，N7，N9，N11]，L23＝>[N3，N7，N10，N11]，L24＝>[N4，N6，N8，N11]、L25＝>[N4，N7，N9，N11]、L26＝>[N4，N7，N10，N11]。
all information transfer paths between end node groups C1 and C2 include:
L31＝>[N1，N5，N8，N6，N3]、L32＝>[N1，N5，N8，N6，N4]、L33＝>[N1，N6，N3]、L34＝>[N1，N6，N4]、L35＝>[N2，N6，N3]、L36＝>[N2，N6，N4]、L37＝>[N2，N7，N3]、L38＝>[N2，N7，N3]。
selecting N8 as a target node, setting the state value of N8 as a fault value, setting the state values of N1, N2, N3, N4, N5, N6, N7, N9, N10 and N11 as normal values, wherein the fault value is 0, and the normal value is 1, calculating the path state value of each information transfer path in an AND mode as follows:
L11＝N1&N5&N8&N11＝1&1&0&1＝0；
L12＝N1&N6&N8&N11＝1&1&0&1＝0；
L13＝N2&N6&N8&N11＝1&1&0&1＝0；
L14＝N2&N7&N9&N11＝1&1&1&1＝1；
L15＝N2&N7&N10&N11＝1&1&1&1＝1；
L21＝N3&N6&N8&N11＝1&1&0&1＝0；
L22＝N3&N7&N9&N111＝1&1&1&1＝1；
L23＝N3&N7&N10&N11＝1&1&1&1＝1；
L24＝N4&N6&N8&N11＝1&1&0&1＝0；
L25＝N4&N7&N9&N11＝1&1&1&1＝1；
L26＝N4&N7&N10&N11＝1&1&1&1＝1；
L31＝N1&N5&N8&N6&N3＝1&1&0&1&1＝0；
L32＝N1&N5&N8&N6&N41＝&1&0&1&1＝0；
L33＝N1&N6&N3＝1&1&1＝1；
L34＝N1&N6&N4＝1&1&1＝1；
L35＝N2&N6&N3＝1&1&1＝1；
L36＝N2&N6&N4＝1&1&1＝1；
L37＝N2&N7&N3＝1&1&1＝1；
L38＝N2&N7&N3＝1&1&1＝1。
from the path state values of all the information transfer paths between the end node groups C1 and C3, the association state value R1 between the end node groups C1 and C3 is calculated by an or method as follows:
R1＝L11|L12|L13|L14|L15＝0|0|0|1|1＝1。
from the path state values of all the information transfer paths between the end node groups C2 and C3, the association state value R2 between the end node groups C2 and C3 is calculated by an or method as follows:
R2＝L21|L22|L23|L24|L25|L26＝0|1|1|0|1|1＝1。
from the path state values of all the information transfer paths between the end node groups C1 and C2, the association state value R3 between the end node groups C1 and C2 is calculated by an or method as follows:
R3＝L31|L32|L33|L34|L35|L36|L37|L38＝0|0|1|1|1|1|1|1＝1。
calculating a system state value by an and method according to the associated state values R1, R2 and R3, and using Fn to represent the system state value when the nth system node is taken as a target node, wherein the specific calculation is as follows:
F8＝R1&R2&R3＝1&1&1＝1。
it can be seen that the system state value obtained by calculation is 1, that is, the system state value is a normal value, it is determined that the system function of the information system is not abnormal, the system function of the information system is not affected when the system node N8 fails, and the system node N8 does not belong to a single-point hidden danger for the information system.
Similarly, all system nodes except N8 are sequentially used as target nodes, and the corresponding system state values obtained by repeating the above calculation steps are as follows:
F1＝1，F2＝1，F3＝1，F4＝1，F5＝1，F6＝1，F7＝1，F9＝1，F10＝1，F11＝0。
it can be seen that, when the system node N11 is a target node, the system function of the information system is abnormal, and N11 is a single-point potential problem, and the information system has the single-point potential problem.
When all the system nodes are sequentially used as target nodes, the system functions of the information system are not abnormal, that is, if F1 ═ F2 ═ F3 ═ F4 ═ F5 ═ F6 ═ F7 ═ F8 ═ F9 ═ F10 ═ F11 ═ 1, it is determined that there is no single-point risk in the information system, and the reliability is high.
Based on the method for verifying the reliability of the information system disclosed in the above embodiment of the present invention, fig. 4 specifically discloses an apparatus for verifying the reliability of the information system, to which the method for verifying the reliability of the information system is applied.
As shown in fig. 4, another embodiment of the present invention discloses an apparatus for verifying the authenticity of an information system, the apparatus comprising:
the setting unit 401 is configured to sequentially use all system nodes in the information system as target nodes, set the target nodes to be in a fault state, and set all system nodes except the target nodes to be in a normal operation state.
A first determining unit 402, configured to determine whether a system function of the information system is abnormal when each system node is a target node.
A second determining unit 403, configured to determine that there is no hidden danger of a single point in the information system if there is no abnormality in system functions of the information system when all the system nodes are sequentially used as target nodes; and if the system function of the information system is abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system.
Optionally, the setting unit 401 includes:
and the setting subunit is used for setting the state value of the target node as a fault value and setting the state values of all system nodes except the target node as normal values.
Optionally, the first determining unit 402 includes:
the first calculation unit is used for calculating the path state value of each information transmission path according to the state value of the target node and the state values of all system nodes except the target node; the system nodes comprise terminal nodes and network nodes; the information transmission path is an information transmission path which is formed by starting one terminal node from one or more network nodes and ending the other terminal node in two terminal nodes in a non-same terminal node group; and the terminal node group is obtained by dividing all terminal nodes in the information system according to the same service function.
And the second calculation unit is used for calculating the association state value between every two terminal node groups according to the path state values of all information transmission paths between the two terminal node groups.
And the third calculating unit is used for calculating a system state value according to the associated state value.
And the third judging unit is used for judging whether the system function of the information system is abnormal or not according to the system state value.
Optionally, the first computing unit is configured to, if the system node in the information transfer path has the target node, determine that a path state value of the information transfer path is a fault value; and if the system node in the information transfer path does not have the target node, the path state value of the information transfer path is a normal value.
Optionally, the second calculating unit is configured to determine that the associated state value between the two terminal node groups is a normal value if a path state value whose value is a normal value exists in the path state values of all information transmission paths between the two terminal node groups; and if the path state values of all the information transmission paths between the two terminal node groups are fault values, the associated state value between the two terminal node groups is a fault value.
Optionally, the third calculating unit is configured to determine that the system state value is a fault value if the associated state value with a value that is a fault value exists in the associated state values; and if the correlation state value with the fault value does not exist in the correlation state values, the system state value is a normal value.
The specific working processes of the setting unit 401, the first judging unit 402 and the second judging unit 403 in the device for checking reliability of an information system disclosed in the above embodiment of the present invention may refer to the corresponding contents in the method for checking reliability of an information system disclosed in the above embodiment of the present invention, and are not described herein again.
In the apparatus for checking reliability of an information system disclosed in this embodiment, a first determining unit determines whether a system function of the information system is abnormal when each system node is used as a target node in a failure state; the second judging unit judges that no single-point hidden danger exists in the information system if the system functions of the information system are all abnormal when all the system nodes are sequentially used as target nodes; and if the system functions of the information system are abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system. The method judges whether the system function is abnormal or not by self-setting the fault node, and checks the single-point hidden danger in the information system so as to check the reliability of the information system.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (8)
1. A method for verifying the authenticity of an information system, comprising:
sequentially taking all system nodes in an information system as target nodes, setting the state values of the target nodes as fault values, and setting the state values of all system nodes except the target nodes as normal values;
judging whether the system function of the information system is abnormal or not when each system node is used as a target node;
if the system functions of the information system are not abnormal when all the system nodes are sequentially used as target nodes, judging that the information system does not have single-point hidden danger;
if the system function of the information system is abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system;
wherein, when judging that each system node is used as a target node, whether the system function of the information system is abnormal includes:
calculating the path state value of each information transmission path according to the state value of the target node and the state values of all system nodes except the target node; the system nodes comprise terminal nodes and network nodes; the information transmission path is an information transmission path which is formed by starting one terminal node from one or more network nodes and ending the other terminal node in two terminal nodes in a non-same terminal node group; the terminal node group is obtained by dividing all terminal nodes in the information system according to the same service function;
calculating the association state value between every two terminal node groups according to the path state values of all information transmission paths between the two terminal node groups;
calculating a system state value according to the correlation state value;
and judging whether the system function of the information system is abnormal or not according to the system state value.
2. The method of claim 1, wherein the calculating the path state value for each information delivery path based on the state value of the target node and the state values of all system nodes except the target node comprises:
if the system node in the information transmission path has the target node, the path state value of the information transmission path is a fault value;
and if the system node in the information transfer path does not have the target node, the path state value of the information transfer path is a normal value.
3. The checking method according to claim 2, wherein said calculating an association status value between each two terminal node groups according to the path status values of all information transfer paths between the two terminal node groups comprises:
if a path state value with a normal value exists in the path state values of all information transmission paths between the two terminal node groups, the association state value between the two terminal node groups is a normal value;
and if the path state values of all the information transmission paths between the two terminal node groups are fault values, the associated state value between the two terminal node groups is a fault value.
4. The verification method of claim 3, wherein said calculating a system state value from said associated state values comprises:
if the correlation state value with the fault value exists in the correlation state values, the system state value is the fault value;
and if the correlation state value with the fault value does not exist in the correlation state values, the system state value is a normal value.
5. An apparatus for verifying the authenticity of an information system, comprising:
the system comprises a setting unit, a fault detection unit and a fault detection unit, wherein the setting unit is used for sequentially taking all system nodes in an information system as target nodes, setting the state values of the target nodes as fault values and setting the state values of all system nodes except the target nodes as normal values;
the first judging unit is used for judging whether the system function of the information system is abnormal or not when each system node is taken as a target node;
a second determining unit, configured to determine that there is no single-point hidden danger in the information system if there is no abnormality in system functions of the information system when all the system nodes are sequentially used as target nodes; if the system function of the information system is abnormal when all the system nodes are sequentially used as target nodes, judging that the single-point hidden danger exists in the information system;
wherein the first judging unit includes:
the first calculation unit is used for calculating the path state value of each information transmission path according to the state value of the target node and the state values of all system nodes except the target node; the system nodes comprise terminal nodes and network nodes; the information transmission path is an information transmission path which is formed by starting one terminal node from one or more network nodes and ending the other terminal node in two terminal nodes in a non-same terminal node group; the terminal node group is obtained by dividing all terminal nodes in the information system according to the same service function;
a second calculating unit, configured to calculate an association state value between each two terminal node groups according to the path state values of all information transmission paths between the two terminal node groups;
the third calculating unit is used for calculating a system state value according to the correlation state value;
and the third judging unit is used for judging whether the system function of the information system is abnormal or not according to the system state value.
6. The apparatus according to claim 5, wherein the first computing unit is configured to, if the target node exists in a system node in the information transfer path, determine that the path status value of the information transfer path is a failure value; and if the system node in the information transfer path does not have the target node, the path state value of the information transfer path is a normal value.
7. The apparatus according to claim 6, wherein the second computing unit is configured to, if there is a path state value that is a normal value among the path state values of all information transmission paths between the two terminal node groups, determine that the association state value between the two terminal node groups is a normal value; and if the path state values of all the information transmission paths between the two terminal node groups are fault values, the associated state value between the two terminal node groups is a fault value.
8. The testing apparatus of claim 7, wherein the third computing unit is configured to determine that the system status value is a fault value if there is a fault value in the associated status values; and if the correlation state value with the fault value does not exist in the correlation state values, the system state value is a normal value.
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