WO2023119652A1 - 電子制御装置、及びアクセス制御方法 - Google Patents
電子制御装置、及びアクセス制御方法 Download PDFInfo
- Publication number
- WO2023119652A1 WO2023119652A1 PCT/JP2021/048336 JP2021048336W WO2023119652A1 WO 2023119652 A1 WO2023119652 A1 WO 2023119652A1 JP 2021048336 W JP2021048336 W JP 2021048336W WO 2023119652 A1 WO2023119652 A1 WO 2023119652A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- access
- electronic control
- time
- access violation
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/55—Detecting local intrusion or implementing counter-measures
- G06F21/552—Detecting local intrusion or implementing counter-measures involving long-term monitoring or reporting
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/14—Protection against unauthorised use of memory or access to memory
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/14—Protection against unauthorised use of memory or access to memory
- G06F12/1458—Protection against unauthorised use of memory or access to memory by checking the subject access rights
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/52—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems during program execution, e.g. stack integrity ; Preventing unwanted data erasure; Buffer overflow
- G06F21/54—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems during program execution, e.g. stack integrity ; Preventing unwanted data erasure; Buffer overflow by adding security routines or objects to programs
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/55—Detecting local intrusion or implementing counter-measures
- G06F21/554—Detecting local intrusion or implementing counter-measures involving event detection and direct action
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/55—Detecting local intrusion or implementing counter-measures
- G06F21/56—Computer malware detection or handling, e.g. anti-virus arrangements
- G06F21/566—Dynamic detection, i.e. detection performed at run-time, e.g. emulation, suspicious activities
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
Definitions
- the present invention relates to arithmetic processing technology for vehicle control devices, and more particularly to access control technology for memory and input/output devices.
- Microcomputers installed in recent electronic control units set access rights to memory and detect violations of rights to detect processing abnormalities due to unauthorized access due to program bugs and defects. ing.
- a hypervisor and a virtual machine (a method that makes it appear as if it is occupying the microcomputer from the internal program) was introduced to detect unauthorized access. By restarting or stopping the virtual machine, it is possible to degrade to prevent the spread of failures.
- Zone-ECU which manages in-vehicle communications
- Zone-ECU which manages in-vehicle communications
- Patent Document 1 Japanese Patent Application Laid-Open No. 2018-18274
- a memory protection violation interrupt is provided with a microcomputer having a memory protection unit that generates The microcomputer counts the number of violation accesses, and disables the generation of the memory protection violation interrupt when the counted number exceeds a predetermined number. Therefore, after disabling the memory protection violation interrupt, it is possible to continue executing the program without terminating the current process or restarting the OS. In this case, the protection by the memory protection unit is continued, so an electronic control device is described that can safely continue the execution of the program.
- the instruction set is simplified by treating the control registers of input/output devices as a type of memory.
- the data is stored in the buffer, the CPU continues processing, and the input/output device performs processing by referring to the data in the buffer at a timing different from that of the CPU.
- the microcomputer's access violation detection mechanism operates when the CPU accesses the data bus, and when an access violation is detected, it can generate an interrupt without delay and notify the OS of the violation.
- control registers of input/output devices are also a type of memory
- access violations to control registers can be detected by the access violation detection mechanism described above.
- the access violation detection mechanism on the CPU side has an upper limit on the number of memory areas that can be set, access to input/output devices is often prohibited or permitted all at once.
- Some microcomputers are configured with an access violation detection mechanism on the input/output device side in order to protect the input/output device even when access to the control register is collectively permitted.
- the timing at which the access authority violation is detected in the input/output device may differ from the timing at which the processing caused by the CPU is performed. In other words, when the detection of authority violation is notified by interrupt, there is a possibility that another process is already being executed at the time of interrupt processing.
- interrupts are disabled during the execution of processes that need to maintain consistency, and a delay may occur due to interrupt detection. This delay becomes noticeable in an OS that manages multiple tasks. That is, when the OS switches tasks, it is common to disable interrupts in order to maintain the consistency of management information inside the OS. , the processing after detection is delayed, so there is a possibility that the causative task is erroneously determined.
- the present invention has been made to solve the above-mentioned problems, and aims to correctly determine the cause task of authority violation.
- an electronic control device comprising an arithmetic unit for executing a program, a memory accessible by the arithmetic unit, an access violation detection mechanism for monitoring access from the arithmetic unit to the memory, and the access violation detection mechanism.
- a time storage mechanism that stores a detection time at which an access violation is detected by the arithmetic unit, the arithmetic unit stores the switching time at the timing of switching the task to be executed, and the time storage mechanism stores the time at which the access violation is detected. The time is stored, and the computing device identifies the task causing the access violation by comparing the switching time and the detection time.
- FIG. 1 is a configuration diagram of an electronic control unit of Example 1.
- FIG. 4 is a sequence diagram of task execution by the OS and processing after detection of a violation;
- FIG. 10 is a configuration diagram of an electronic control unit of Example 2;
- FIG. 11 is a configuration diagram of an electronic control unit of Example 3;
- FIG. 11 is a configuration diagram of an electronic control unit of Example 6;
- FIG. 11 is a configuration diagram of an electronic control unit of Example 7;
- FIG. 1 is a configuration diagram of an electronic control unit 1 according to the first embodiment.
- This embodiment shows a method of generating an interrupt with an error notification when an access violation to a memory or input/output device is detected.
- the electronic control unit 1 is a vehicle control unit suitable for mounting on a vehicle, and has a CPU block 11 and an input/output block 12.
- the CPU block 11 and the input/output block 12 are connected via a bus buffer 13. be done.
- the bus buffer 13 absorbs the difference in data transmission/reception speed between the CPU block 11 and the input/output block 12 .
- the CPU block 11 has a CPU 111 that performs arithmetic processing, an access violation detection mechanism 112, a memory 113, an interrupt controller 114, and a timer 115.
- Access violation detection mechanism 112 monitors accesses to memory 113 and sends error notification 116 to interrupt controller 114 when an access violation occurs.
- an access authority (reading authority, writing authority, erasing authority) is set for each task and for each area of the memory 113. Detects access to as an access violation.
- the interrupt controller 114 generates an interrupt to the CPU 111 upon receiving an error notification 116 resulting from a violation of access to the memory 113 .
- a timer 115 provides time to each unit in the CPU block 11 .
- the input/output block 12 has an input/output device 121 .
- the input/output device 121 has an access violation detection mechanism 122 and a control register 123 and receives an access request to the control register 123 from the CPU 111 via the bus buffer 13 .
- the access violation detector 122 monitors accesses to the control register 123 and sends an error notification 124 to the interrupt controller 114 when an access violation occurs.
- Access authority is set for each task in the input/output block 12, and the access violation detection mechanism 112 detects access from a task for which no access authority is set as an access violation.
- the interrupt controller 114 generates an interrupt to the CPU 111 upon receiving an error notification 124 caused by an access violation to the control register 123 .
- a program that controls the ECU is executed by the CPU 111 and operates under an operating system (OS) for each task that is its constituent unit.
- OS operating system
- the OS switches tasks while interrupts are disabled in order to maintain consistency of internal management information. Also, the OS saves the current time (task switching time) when switching tasks.
- the interrupt caused by the notification from the access violation detection mechanism 122 of the input/output block 12 is a non-maskable interrupt that can be accepted even in the interrupt disabled state, and the interrupt generation time is saved in the interrupt process.
- the OS determines whether or not there is an access violation at the timing of releasing the interrupt prohibition, and identifies the task that was being executed when the access violation occurred by comparing the task switching time and the violation occurrence time.
- FIG. 2 is a sequence diagram of task execution by the OS and processing after violation detection.
- the OS manages and executes tasks.
- the CPU 111 activates task A.
- task A accesses the input/output device 121.
- the bus buffer 13 holds the access request.
- step 213 the CPU 111 (OS) prohibits interrupts and starts task switching processing
- step 214 the CPU 111 saves the task switching start time
- step 215 the CPU 111 executes task switching processing.
- the pending access request is processed.
- the access violation detection mechanism 122 determines whether or not access to the input/output device 121 is permitted. Then, the access violation detection mechanism 122 notifies the CPU 111 of the access error.
- the CPU 111 accepts the access error even in the interrupt disabled state by NMI (non-maskable interrupt) processing in step 251, saves the access violation occurrence time in step 252, and performs NMI processing in step 253. finish.
- NMI non-maskable interrupt
- step 216 the CPU 111 saves the task switching completion time, and in step 217 the CPU 111 completes the task switching process and cancels the interrupt prohibition. Thereafter, in step 218, access violation identification processing is performed.
- step 218 the CPU 111 compares the task switching completion time and the access violation occurrence time, and executes access violation identification processing to identify the cause task.
- the identified task causing the access violation may continue to be executed as it is, but it is preferable to execute a predetermined process such as stopping or restarting the task.
- interrupts may be disabled by changing the interrupt acceptance level.
- the interrupt disable level in the OS may be lowered by one level, and normal interrupts may be used instead of NMI.
- FIG. 3 is a configuration diagram of the electronic control unit 1 of the second embodiment.
- the electronic control unit 1 is provided with a hypervisor 34 that manages the operation of the OS so that tasks operate under the control of the OS.
- the hypervisor 34 has a function of accepting an interrupt even when the OS is in an interrupt disabled state, and generating an interrupt to the OS when the OS cancels the interrupt.
- the access violation detection mechanism 112 detects the access violation and notifies the hypervisor 34 of it.
- the access violation identification mechanism 341 of the hypervisor 34 executes the NMI processing (steps 251 to 253) performed by the CPU 111 in the first embodiment, and notifies the arithmetic device of the access violation according to the detection result of the access violation detection mechanism 112. Generate an interrupt. Therefore, it is not necessary to change the interrupt processing level for the CPU 111 managed by the OS.
- the time from access request suspension (step 221) to access request processing (step 222) is longer than the task switching process in step 215 (that is, the processing time of the CPU 111 is much shorter than the delay of the bus buffer 13). ) In a high-speed microcomputer, simply comparing the task switching time and the access violation detection time may not correctly identify the task being executed when the access violation occurred.
- the delay time from access request suspension (step 221) to access request processing (step 222) is measured, and the measured delay time is added to task switching time at the time of determination in access violation processing (step 218). Then, after correcting the time, the task switching time and the violation occurrence time are compared.
- the delay time caused by the bus buffer 13 or the like allows the task being executed when the access violation occurred to be correctly identified, and the safety of the control by the electronic control unit 1 can be improved.
- FIG. 4 is a configuration diagram of the electronic control unit 1 of the third embodiment.
- the electronic control unit 1 of Example 3 has a hypervisor 34 that provides virtual machines each operating as an independent microcomputer.
- a virtual machine A31 and a virtual machine B32 managed by the hypervisor 34 are running.
- the hypervisor 34 saves the switching times of the virtual machines 31 and 32 .
- Each virtual machine 31 , 32 accesses memory 113 .
- the access violation detection mechanism 112 monitors access to the memory 113 from each of the virtual machines 31 and 32, and sends an error notification to the access violation identification mechanism 341 when an access violation occurs.
- the access violation identification mechanism 341 saves the access violation detection time, compares the switching time of the virtual machines 31 and 32 saved by the hypervisor 34 with the access violation detection time, and determines whether the virtual machine causing the access violation identify.
- the electronic control unit 1 having the hypervisor 34 that provides a virtual machine can integrate functions such as the engine control function and the motor control function, which are conventionally configured by different ECUs. By resetting or stopping the virtual machine that causes unauthorized access, the operation of the electronic control unit 1 can be restored to normal while other normal virtual machines continue to run.
- the engine control function and the motor control function are constructed with virtual machines 31 and 32, respectively.
- the access violation identification mechanism 341 of the hypervisor 34 identifies the virtual machine that caused the access violation, issues an instruction to the virtual machine stop mechanism 342, and stops the virtual machine that caused the access violation. Stop and restart. If the virtual machine A31 is the cause of the access violation, only the virtual machine A31 may be restarted, and if the virtual machine B32 is the cause, the entire electronic control unit 1 may be restarted.
- the task that caused the access violation is stopped and the functions of the electronic control unit 1 are restricted.
- Appropriate degeneration processing according to the degree of importance of functions can be performed while ensuring safety by not generating control.
- FIG. 5 is a configuration diagram of the electronic control unit 1 of the sixth embodiment.
- a virtual machine C33 that provides a security management function is operating.
- Virtual machine C33 is managed by hypervisor 34 in the same manner as virtual machine A31 and virtual machine B32. If the virtual machine A31 or B32 is the cause of the access violation, only the virtual machine that caused the access violation is restarted. Ensure the safety of the entire vehicle by determining that an infringement has occurred, stopping the entire electronic control unit 1 to shift to a safe state, or notifying other electronic control units of unauthorized access. do.
- the task set according to the task (virtual machine) that caused the access violation is stopped, restarted, or notified to other processing (another ECU).
- Appropriate degeneracy processing according to the importance of functions can be performed while ensuring safety by restricting some or all of the functions.
- FIG. 6 is a configuration diagram of the electronic control unit 1 of the seventh embodiment.
- the access violation occurrence time is acquired by a dedicated circuit outside the CPU or another CPU core.
- the access violation detection mechanism 112 sends an error notification 124 to the time retention mechanism 117.
- the time holding mechanism 117 acquires the time from the timer 115 and saves it.
- the access violation detection mechanism 122 of the input/output block 12 sends an error notification 124 to the time keeping mechanism 117 .
- the time holding mechanism 117 only needs to have a function of acquiring and holding the time from the timer 115, and may transfer the time from the timer 115 to the memory 113 using DMA. Also, if the multi-core microcomputer has a plurality of CPUs, other CPUs may perform the processing.
- the electronic control unit of the embodiment of the present invention includes an arithmetic unit (CPU 111) that executes a program, a memory 113 that can be accessed by the arithmetic unit 111, and access from the arithmetic unit 111 to the memory 113. Equipped with an access violation detection mechanism 112 to monitor and a time storage mechanism (CPU 111, time storage mechanism 117) that stores the time when an access violation is detected by the access violation detection mechanism 112, the arithmetic unit 111 switches tasks to be executed.
- the timing saves the switching time
- the time saving mechanism saves the detection time when the access violation is detected
- the arithmetic unit 111 identifies the task that caused the access violation by comparing the switching time and the detection time. , the task that caused the privilege violation can be determined correctly. Also, in an ECU having a plurality of tasks, even if the detection of an access authority violation is delayed, the task causing the violation can be identified and normal function processing can be continued.
- the present invention is not limited to the above-described embodiments, and includes various modifications and equivalent configurations within the scope of the attached claims.
- the above-described embodiments have been described in detail for easy understanding of the present invention, and the present invention is not necessarily limited to those having all the described configurations.
- part of the configuration of one embodiment may be replaced with the configuration of another embodiment.
- the configuration of another embodiment may be added to the configuration of one embodiment.
- additions, deletions, and replacements of other configurations may be made for a part of the configuration of each embodiment.
- each configuration, function, processing unit, processing means, etc. described above may be realized by hardware, for example, by designing a part or all of them with an integrated circuit, and the processor realizes each function. It may be realized by software by interpreting and executing a program to execute.
- Information such as programs, tables, and files that implement each function can be stored in storage devices such as memories, hard disks, SSDs (Solid State Drives), or recording media such as IC cards, SD cards, and DVDs.
- storage devices such as memories, hard disks, SSDs (Solid State Drives), or recording media such as IC cards, SD cards, and DVDs.
- control lines and information lines indicate those that are considered necessary for explanation, and do not necessarily indicate all the control lines and information lines necessary for implementation. In practice, it can be considered that almost all configurations are interconnected.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Virology (AREA)
- Bioethics (AREA)
- Storage Device Security (AREA)
Abstract
Description
図1は、実施例1の電子制御装置1の構成図である。
図3は、実施例2の電子制御装置1の構成図である。
実施例1において、アクセス要求保留(ステップ221)からアクセス要求処理(ステップ222)までの時間が、ステップ215タスク切り替え処理より長い(すなわち、バスバッファ13の遅延より、CPU111の処理時間が大幅に短い)高速なマイコンにおいては、タスク切り替え時刻とアクセス違反検出時刻とを単純に比較しても、アクセス違反発生時に実行されていたタスクを正しく特定できないことがある。
図4は、実施例3の電子制御装置1の構成図である。実施例3の電子制御装置1は、それぞれが独立したマイコンとして動作する仮想マシンを提供するハイパーバイザ34を有する。
エンジン制御機能とモータ制御機能のように、従来は異なるECUで構成していた機能を、仮想マシンを提供するハイパーバイザ34を有する電子制御装置1によって統合できる。不正アクセスの原因となる仮想マシンのリセットや停止によって、他の正常な仮想マシンの実行を継続しつつ、電子制御装置1の動作を正常に復帰できる。
図5は、実施例6の電子制御装置1の構成図である。実施例6の電子制御装置1では、仮想マシンA31と仮想マシンB32の他、セキュリティ管理機能を提供する仮想マシンC33が動作している。仮想マシンC33は、仮想マシンA31と仮想マシンB32と同様にハイパーバイザ34によって管理される。仮想マシンA31や仮想マシンB32がアクセス違反の原因であれば、アクセス違反の原因となった仮想マシンのみを再起動し、セキュリティ管理機能を提供する仮想マシンC33が不正アクセスの原因であれば、セキュリティ侵害が発生したと判定して、電子制御装置1の全体を停止して安全な状態に移行したり、他の電子制御装置に不正アクセスを通知したりすることで、車両全体の安全性を確保する。
図6は、実施例7の電子制御装置1の構成図である。実施例7の電子制御装置1では、アクセス違反の発生時刻をCPU外の専用回路や他のCPUコアで取得する。
Claims (11)
- 電子制御装置であって、
プログラムを実行する演算装置と、
前記演算装置がアクセス可能なメモリと、
前記演算装置から前記メモリへのアクセスを監視するアクセス違反検出機構と、
前記アクセス違反検出機構によってアクセス違反が検出された時刻を保存する時刻保存機構とを備え、
前記演算装置は、実行するタスクを切り替えるタイミングで切替時刻を保存し、
前記時刻保存機構は、前記アクセス違反が検出された検出時刻を保存し、
前記演算装置は、前記切替時刻と前記検出時刻との比較によって、前記アクセス違反を生じたタスクを特定することを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記タスク毎に、前記メモリの記憶領域へのアクセス権限が設定されており、
前記アクセス違反検出機構は、前記タスクから前記メモリへのアクセスが、前記設定されたアクセス権限に従っているかを監視し、前記アクセス権限を超えたアクセス違反を前記演算装置に通知することを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記演算装置からアクセス可能な入出力装置を備え、
前記アクセス違反検出機構は、前記演算装置から前記入出力装置へのアクセスを監視し、
前記時刻保存機構は、前記入出力装置へのアクセス違反が検出された時刻を保存し、
前記演算装置は、前記切替時刻と前記検出時刻との比較によって、前記アクセス違反を生じたタスクを特定することを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記演算装置は、前記演算装置が割り込み禁止中でも受け付けられるレベルの割り込みによって、前記アクセス違反の通知を受けることを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記時刻保存機構は、前記演算装置とは別に設けられることを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記演算装置ではハイパーバイザが動作しており、
前記ハイパーバイザは、前記アクセス違反検出機構による検出結果に従って、アクセス違反を前記演算装置に通知する割り込みを発生することを特徴とする電子制御装置。 - 請求項6に記載の電子制御装置であって、
前記ハイパーバイザは、タスクが実行される仮想マシンを提供し、
前記時刻保存機構は、前記アクセス違反が検出された時刻を保存し、
前記演算装置は、前記切替時刻と前記検出時刻との比較によって、前記アクセス違反を生じた仮想マシンを特定して、前記特定された仮想マシンで実行されるタスクを、前記アクセス違反を生じたタスクを特定することを特徴とする電子制御装置。 - 請求項3に記載の電子制御装置であって、
前記演算装置は、前記入出力装置へのアクセス要求が処理されるまでの保留時間によって前記切替時刻を補正し、前記補正された切替時刻と前記検出時刻との比較によって、前記アクセス違反を生じたタスクを特定することを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記演算装置は、前記アクセス違反を生じたタスクを停止し、前記電子制御装置の機能を制限することを特徴とする電子制御装置。 - 請求項1に記載の電子制御装置であって、
前記演算装置は、前記アクセス違反の検出後に、前記アクセス違反を生じたタスクに応じて、前記電子制御装置の一部又は全部の機能を制限することを特徴とする電子制御装置。 - 電子制御装置におけるアクセス制御方法であって、
前記電子制御装置は、プログラムを実行する演算装置と、前記演算装置がアクセス可能なメモリと、前記演算装置から前記メモリへのアクセスを監視するアクセス違反検出機構と、前記アクセス違反検出機構によってアクセス違反が検出された検出時刻を保存する時刻保存機構とを有し、
前記アクセス制御方法は、
前記演算装置が、実行するタスクを切り替えるタイミングで切替時刻を保存し、
前記時刻保存機構が、前記アクセス違反が検出された時刻を保存し、
前記演算装置が、前記切替時刻と前記検出時刻との比較によって、前記アクセス違反を生じたタスクを特定することを特徴とするアクセス制御方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/722,020 US12541469B2 (en) | 2021-12-24 | 2021-12-24 | Electronic control unit and access control method |
| PCT/JP2021/048336 WO2023119652A1 (ja) | 2021-12-24 | 2021-12-24 | 電子制御装置、及びアクセス制御方法 |
| JP2023569014A JP7751660B2 (ja) | 2021-12-24 | 2021-12-24 | 電子制御装置、及びアクセス制御方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2021/048336 WO2023119652A1 (ja) | 2021-12-24 | 2021-12-24 | 電子制御装置、及びアクセス制御方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023119652A1 true WO2023119652A1 (ja) | 2023-06-29 |
Family
ID=86901948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/048336 Ceased WO2023119652A1 (ja) | 2021-12-24 | 2021-12-24 | 電子制御装置、及びアクセス制御方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US12541469B2 (ja) |
| JP (1) | JP7751660B2 (ja) |
| WO (1) | WO2023119652A1 (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02121045A (ja) * | 1988-10-31 | 1990-05-08 | Nec Corp | アクセスプロテクト機能を有するマイクロプロセッサ |
| JPH10254738A (ja) * | 1997-03-12 | 1998-09-25 | Mitsubishi Electric Corp | エミュレータ装置及びエミュレーション方法 |
| JP2005309613A (ja) * | 2004-04-19 | 2005-11-04 | Ueda Japan Radio Co Ltd | 不正アクセス検出装置、不正アクセス検出方法、プログラム |
| JP2013161299A (ja) * | 2012-02-06 | 2013-08-19 | Toyota Motor Corp | 情報処理装置、インタフェースアクセス方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5541036B2 (ja) * | 2010-09-21 | 2014-07-09 | 富士通株式会社 | メモリアクセス制御プログラム、メモリアクセス制御方法、及び情報処理装置 |
| US9400885B2 (en) * | 2014-01-10 | 2016-07-26 | Bitdefender IPR Management Ltd. | Computer security systems and methods using virtualization exceptions |
| JP6589767B2 (ja) | 2016-07-27 | 2019-10-16 | 株式会社デンソー | 電子制御装置 |
| US10621340B2 (en) * | 2016-09-01 | 2020-04-14 | Intel Corporation | Hybrid hypervisor-assisted security model |
| US12339957B2 (en) * | 2022-03-08 | 2025-06-24 | Denso Corporation | Detecting tampering of an electronic device |
| US20230289204A1 (en) * | 2022-03-10 | 2023-09-14 | BedRock Systems. Inc. | Zero Trust Endpoint Device |
-
2021
- 2021-12-24 US US18/722,020 patent/US12541469B2/en active Active
- 2021-12-24 WO PCT/JP2021/048336 patent/WO2023119652A1/ja not_active Ceased
- 2021-12-24 JP JP2023569014A patent/JP7751660B2/ja active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02121045A (ja) * | 1988-10-31 | 1990-05-08 | Nec Corp | アクセスプロテクト機能を有するマイクロプロセッサ |
| JPH10254738A (ja) * | 1997-03-12 | 1998-09-25 | Mitsubishi Electric Corp | エミュレータ装置及びエミュレーション方法 |
| JP2005309613A (ja) * | 2004-04-19 | 2005-11-04 | Ueda Japan Radio Co Ltd | 不正アクセス検出装置、不正アクセス検出方法、プログラム |
| JP2013161299A (ja) * | 2012-02-06 | 2013-08-19 | Toyota Motor Corp | 情報処理装置、インタフェースアクセス方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2023119652A1 (ja) | 2023-06-29 |
| US20250068725A1 (en) | 2025-02-27 |
| JP7751660B2 (ja) | 2025-10-08 |
| US12541469B2 (en) | 2026-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101122517B1 (ko) | 런타임 보안 보장을 위한 자율 메모리 검사기 및 이의 방법 | |
| CN112818327B (zh) | 基于TrustZone的用户级代码和数据安全可信保护方法及装置 | |
| US7793347B2 (en) | Method and system for validating a computer system | |
| US11188640B1 (en) | Platform firmware isolation | |
| WO2013159041A1 (en) | System and method for secure booting and debugging of a peripheral subsystem in a system on chip device | |
| EP2996043B1 (en) | Debugging in a data processing apparatus | |
| US11188321B2 (en) | Processing device and software execution control method | |
| US7774517B2 (en) | Information processing apparatus having an access protection function and method of controlling access to the information processing apparatus | |
| US7146529B2 (en) | System and method for processor thread acting as a system service processor | |
| JP7623887B2 (ja) | 電子制御装置及び異常判定方法 | |
| JP2007249323A (ja) | マイクロコンピュータ | |
| EP3246821B1 (en) | Semiconductor device and its memory access control method | |
| CN107958164A (zh) | 控制装置 | |
| KR20190059955A (ko) | 작업 메모리 보호 방법 및 그 장치 | |
| US10628056B2 (en) | Information processing apparatus and shared memory management method | |
| JP5842833B2 (ja) | 情報処理装置、プログラム | |
| JP7751660B2 (ja) | 電子制御装置、及びアクセス制御方法 | |
| JP7012915B2 (ja) | コントローラ | |
| TW201502846A (zh) | 安全事件偵測技術 | |
| JP2014074995A (ja) | 情報処理装置 | |
| CA2551045C (en) | Input-output control apparatus, input-output control method, process control apparatus and process control method | |
| WO2022181020A1 (ja) | 情報処理装置および情報処理方法 | |
| JP4114004B2 (ja) | 半導体集積回路 | |
| JP2613986B2 (ja) | 情報処理装置 | |
| JP2023152485A (ja) | 処理装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21969083 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023569014 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 18722020 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 21969083 Country of ref document: EP Kind code of ref document: A1 |
|
| WWP | Wipo information: published in national office |
Ref document number: 18722020 Country of ref document: US |
|
| WWG | Wipo information: grant in national office |
Ref document number: 18722020 Country of ref document: US |