CN112269995A - Trusted computing platform for parallel computing and protection of smart power grid environment - Google Patents
Trusted computing platform for parallel computing and protection of smart power grid environment Download PDFInfo
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Abstract
The invention discloses a trusted computing platform for parallel computing and protection in an intelligent power grid environment, which comprises: the intelligent power grid protection component is used for performing active measurement and active control on the intelligent power grid computing component according to a credible strategy through a credible platform control module; the smart grid protection component is specifically used for respectively performing static measurement and dynamic measurement on the smart grid computing component through an active immune chip agent. The trusted computing platform provided by the invention realizes active safety protection while computing through the parallel smart grid computing component and the smart grid protection component.
Description
Technical Field
The invention relates to the technical field of trusted computing, in particular to a trusted computing platform for parallel computing and protection of an intelligent power grid environment.
Background
For the smart grid, as the probability of the power grid infrastructure being attacked is higher and higher, stable power supply in each country is in danger of being attacked maliciously, so that the importance of security problems is increased day by day, however, current research and industrialization achievements mainly face to the application of the smart grid, and the security of the smart grid is considered less. The current network space is extremely fragile, and various network attack events are layered endlessly and increasingly rampant. The root of the method is that the problem is not solved from the actual reason of the network security risk, a passive defense means of blocking, checking and killing represented by a firewall, a virus checking and killing, intrusion detection and the like is adopted at one step, the defense is not sufficient, and particularly when the attack initiated aiming at the loophole of a target system is faced, the defense cannot be effectively realized at all.
In order to solve the problem of the security of the current network space, the international TCG organization provides a trusted computing method, and provides a method which takes TPM and BIOS initial codes as trust roots and measures the trust by one level, thereby constructing a trust chain of a computer, protecting important resources of the computer from being illegally tampered and damaged, and achieving a better effect. However, the TPM is essentially only a passively hooked external device on the computer, and only functions when called by a host program, and once the host is controlled by an attacker, the function of the TPM is played indiscriminately, and the TPM only implements static metrics at the time of starting the computer and does not implement policy-based dynamic metrics at the time of running the computer, so that the trusted computing architecture of the TCG is basically difficult to defend when a hacker attacks with logic defects of the computer system, for example, Windows 10 fully implements the trusted computing architecture of the TCG, but fails to prevent the attack of Wannacry ransom virus.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a trusted computing platform with parallel computing and protection of the smart grid environment, changes the traditional thought that a TPM is used as a passive hanging device, uses a trusted platform control module as a source point of active measurement and active control, and realizes the active measurement and active control of the trusted platform control module on the whole smart grid computing component.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a trusted computing platform for parallel computing and protection of a smart grid environment, comprising: a parallel smart grid computing component and a smart grid protection component, wherein,
the intelligent power grid computing component is used for completing computing tasks;
the intelligent power grid protection component is used for carrying out active measurement and active control on the intelligent power grid computing component through an active immune chip according to a dynamic autonomous credibility strategy; a safety isolation mechanism is arranged between the intelligent power grid computing component and the intelligent power grid protection component, and interaction is carried out through a special access channel;
the smart grid protection component actively measures the smart grid computing component according to a dynamic autonomous credibility strategy, and the method comprises the following steps: and respectively carrying out static measurement and dynamic measurement on the intelligent power grid computing component through an active immune chip agent.
Further, according to the trusted computing platform with parallel computing and protection of the smart grid environment, the active immune chip agent includes a system boot measurement agent, a system kernel measurement agent, an application launch measurement agent and an application running measurement agent, the system boot measurement agent, the system kernel measurement agent and the application launch measurement agent are used for performing static measurement on the smart grid computing component, and the application running measurement agent is used for performing dynamic measurement and control processing on the smart grid computing component. Metrics include, but are not limited to, integrity checks, regularity checks, and the like.
Further, the trusted computing platform for parallel computing and protection of the smart grid environment is characterized in that the active immune chip agent is specifically configured to establish a trust chain of the smart grid computing component, and the active immune chip agent includes a system boot measurement agent, a system kernel measurement agent, an application start measurement agent, and an application run measurement agent;
the system boot measurement agent is used for actively measuring the smart grid special system boot and system kernel measurement agent of the smart grid computing component after the smart grid special firmware is started and before the smart grid special system boot of the smart grid computing component is started;
the system kernel measurement agent is used for actively measuring the smart grid special operating system, the application running measurement agent and the application starting measurement agent after the smart grid special system is booted and before the smart grid special operating system of the smart grid computing component is loaded;
the application launching measurement agent is used for carrying out active measurement on the launching codes executed and loaded by the smart grid application after the smart grid special operating system is executed.
Further, according to the trusted computing platform with parallel computing and protection of the smart grid environment, the application operation measurement agent is specifically configured to perform active measurement on the code executed and loaded by the smart grid application operating in the memory of the smart grid computing component according to a dynamic autonomous trusted policy. The dynamic autonomous trusted policy varies depending on the measurement object and the timing of the measurement, including without limitation, the subject, the object, the operating and execution environment, and the like.
Drawings
Fig. 1 is a schematic structural diagram of a trusted computing platform with parallel computing and protection in a smart grid environment, provided in an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
At present, a trusted computing chip TPM proposed by the international TCG organization is used as an external device of a computer, functions in a passive hooking manner through host software calling, performs static measurement on resources such as firmware, executable programs and the like of the computer, has limitations in resource access and control, has security capability completely depending on the security of a host system, is difficult to defend attacks performed by hackers using vulnerabilities of the host system, and cannot substantially improve the active defense capability of the computer system.
The invention provides a trusted computing platform for parallel computing and protection of an intelligent power grid environment. The smart grid protection component and the smart grid computing component are in parallel operation relationship, and the safety and the reliability of the smart grid protection component do not depend on the smart grid computing component.
Interpretation of terms
TPM: a trusted platform module.
The active immune chip is a hardware core module which is integrated in a trusted computing platform and used for establishing and guaranteeing a trusted source point and providing functions of integrity measurement, safe storage, trusted report, password service and the like for trusted computing.
The following describes a basic framework of a trusted computing platform with parallel computing and protection in a smart grid environment.
As shown in fig. 1, a trusted computing platform for smart grid environment computing in parallel with protection may include: the intelligent power grid protection component is used for performing active measurement and active control on the intelligent power grid computing component according to a dynamic autonomous credibility strategy through an active immune chip; a safety isolation mechanism is arranged between the intelligent power grid computing component and the intelligent power grid protection component, and interaction can be carried out through a special access channel;
the smart grid protection component is specifically used for respectively performing static measurement and dynamic measurement on the smart grid computing component through an active immune chip agent.
The trusted computing platform takes the active immune chip as a trust root, the active immune chip is started before a special smart grid CPU in the smart grid computing component to verify the hardware configuration in the smart grid computing component, the traditional thought that the TPM is used as a passive hanging device is changed, the active immune chip is used as a source point of active measurement and active control, and the active measurement and active control of the active immune chip on the whole smart grid computing component are realized.
The structural features of the smart grid computing component and the smart grid protection component are described in detail below.
The smart grid computing component may include: a smart grid-specific CPU and hardware, a smart grid-specific firmware, a smart grid-specific system boot, a smart grid-specific operating system, a smart grid application execution and loading,
the smart grid protection component may include: an active immune chip hardware platform and an active immune chip agent. The active immunization chip may include: the system comprises a central processing unit, a special physical memory, a persistent storage space and a built-in password engine. The intelligent power grid protection component is executed in parallel with the intelligent power grid computing component and is provided with a Central Processing Unit (CPU) and a special physical memory. The active immune chip can manage at least one of the following information in the smart grid protection component: processes, memory, file systems, network protocols, I/O devices, and interfaces.
The process of performing static and dynamic metrics by the active immune chip agent is described in detail below.
The active immune chip agent comprises a system guide measurement agent, a system kernel measurement agent, an application starting measurement agent and an application running measurement agent.
The system guide measurement agent, the system kernel measurement agent and the application starting measurement agent are used for carrying out static measurement on the intelligent power grid computing component.
The active immune chip agent is specifically used for establishing a trust chain of the smart grid computing component, and comprises a system guide measurement agent, a system kernel measurement agent, an application starting measurement agent and an application running measurement agent;
the system boot measurement agent is used for actively measuring the smart grid special system boot and system kernel measurement agent of the smart grid computing component after the smart grid special firmware is started and before the smart grid special system boot of the smart grid computing component is started;
the system kernel measurement agent is used for actively measuring the smart grid special operating system, the application running measurement agent and the application starting measurement agent after the smart grid special system is booted and before the smart grid special operating system of the smart grid computing component is loaded;
the system kernel measurement agent is used for actively measuring the smart grid special operating system, the application running measurement agent and the application starting measurement agent after the smart grid special system is booted and before the smart grid special operating system of the smart grid computing component is loaded;
the application launching measurement agent is used for carrying out active measurement on the launching codes executed and loaded by the smart grid application after the smart grid special operating system is executed.
Application run metric proxy
The application operation measurement agent is specifically configured to actively measure the code executed and loaded by the smart grid application operating in the memory of the smart grid computing element according to a dynamic autonomous trusted policy. The dynamic autonomous trusted policy varies depending on the measurement object and the timing of the measurement, including without limitation, the subject, the object, the operating and execution environment, and the like. Operations include, but are not limited to: system call behavior, application self call behavior, etc. The environment may include at least one of: the method comprises the steps of applying a main program code of an application program, using a library function code, a process-related data structure, a data segment of the application program and a key configuration file; the system environment on which application execution depends may include at least one of: the system comprises a kernel main body code segment, a loadable module code segment, a system call table, an interrupt description table, a file system jump table, a network protocol stack, a jump table, a device driver jump table, a register value and key configuration data.
The invention provides a trusted computing platform for parallel computing and protection of an intelligent power grid environment, which at least comprises the following advantages:
1. the parallel dual-system structural design can actively carry out safety protection while the intelligent power grid computing component carries out computation, and the active safety protection of the intelligent power grid computing component is realized on the premise of not changing the computation logic of the intelligent power grid computing component.
2. The smart grid protection component has active protection capability on the smart grid computing component, and the safety protection is not executed by calling a host program of the smart grid computing component, but actively measures and actively controls the smart grid computing component by taking an active immune chip as a trust root. The intelligent power grid protection component can provide safety protection for the whole life cycle of the intelligent power grid computing component, such as starting, running and the like, on the premise of not modifying the code of the intelligent power grid computing component.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (7)
1. A trusted computing platform for parallel computing and protection of a smart grid environment, comprising: a parallel smart grid computing component and a smart grid protection component, wherein,
the intelligent power grid computing component is used for completing computing tasks;
the intelligent power grid protection component is used for carrying out active measurement and active control on the intelligent power grid computing component through an active immune chip according to a dynamic autonomous credibility strategy; a safety isolation mechanism is arranged between the intelligent power grid computing component and the intelligent power grid protection component, and interaction is carried out through a special access channel;
the smart grid protection component actively measures the smart grid computing component according to a dynamic autonomous credibility strategy, and the method comprises the following steps:
and respectively carrying out static measurement and dynamic measurement on the intelligent power grid computing component through an active immune chip agent.
2. The smart grid environment computing and protection parallel trusted computing platform of claim 1, wherein the active immune chip agent comprises a system boot measurement agent, a system kernel measurement agent, an application launch measurement agent and an application run measurement agent, the system boot measurement agent, the system kernel measurement agent and the application launch measurement agent are used for performing static measurement on the smart grid computing element, and the application run measurement agent is used for performing dynamic measurement and control processing on the smart grid computing element; the measurement mode includes but is not limited to integrity check and regularity detection.
3. The smart grid environment computing and protection parallel trusted computing platform of claim 2, wherein the active immune chip agents are specifically configured to establish a chain of trust for the smart grid computing components, and the active immune chip agents comprise a system boot metrics agent, a system kernel metrics agent, an application launch metrics agent, and an application run metrics agent.
4. The smart grid environment computing and protection parallel trusted computing platform of claim 2, wherein the system boot metrics agent is configured to proactively metric the smart grid specific system boot and system kernel metrics agent of the smart grid computing component after the smart grid specific firmware is started and before the smart grid specific system boot of the smart grid computing component is started.
5. The smart grid environment computing and protection parallel trusted computing platform of claim 2, wherein the system kernel metrics agent is configured to proactively metric the smart grid specific operating system, the application run metrics agent, and the application launch metrics agent after boot-up of the smart grid specific system and prior to loading of the smart grid specific operating system of the smart grid computing component.
6. The smart grid environment computing and protection parallel trusted computing platform of claim 2, wherein the application launch metrics agent is configured to proactively measure the smart grid application executing and loading launch code after the smart grid specific operating system executes.
7. The smart grid environment computing and protection parallel trusted computing platform of claim 2, wherein the application run measurement agent is specifically configured to actively measure smart grid application execution and loading code running in the smart grid computing component memory according to a dynamic autonomous trusted policy; the dynamic autonomic trusted policy varies depending on the metric object and the transformation of the metric opportunities, including without limitation the subject, object, operational and operational environment.
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Application publication date: 20210126 |