Contents
1. Introduction ................................................................................................................................................6
1.1. Disclaimer ............................................................................................................................................................... 6
1.2. Objective of this document .................................................................................................................................... 6
1.3. Scope ....................................................................................................................................................................... 6
1.3.1. Definition of a secure boot and its overall system ....................................................................................... 6
1.3.2. Prerequisites for each area and its target range .......................................................................................... 7
1.4. Reference documents ............................................................................................................................................. 7
1.5. Description of terms ............................................................................................................................................... 9
1.6. Notes on patent rights .......................................................................................................................................... 11
1.7. Notes on copyright ............................................................................................................................................... 11
2. System overview of the ECU area ............................................................................................................... 12
2.1. System components of the ECU area .................................................................................................................. 12
2.2. Preparation function ............................................................................................................................................ 12
2.3. Verification function ............................................................................................................................................ 13
2.4. Response function ................................................................................................................................................ 14
2.5. Data storage area ................................................................................................................................................. 14
3. Functional requirements ............................................................................................................................ 14
3.1. List of functional requirements ........................................................................................................................... 15
3.1.1. Preparation function ................................................................................................................................... 15
3.1.2. Verification function .................................................................................................................................... 15
3.1.3. Response function ........................................................................................................................................ 16
3.1.4. Common to all of the ECU areas ................................................................................................................ 17
3.1.5. Verification algorithm ................................................................................................................................. 17
3.2. Individual functional requirements .................................................................................................................... 18
3.2.1. Preparation function ................................................................................................................................... 18
3.2.2. Verification function .................................................................................................................................... 20
3.2.3. Response function ........................................................................................................................................ 23
3.2.4. Common to all of the ECU areas ................................................................................................................ 24
3.2.5. Verification Algorithm ................................................................................................................................. 25
4. Implementation note .................................................................................................................................. 27
4.1. Preparation function ............................................................................................................................................ 27
4.2. Verification function ............................................................................................................................................ 27
4.3. Response function ................................................................................................................................................ 29
APPENIDIX.A (Reference): Types of LSI Memory and Allocation of Data Storage Area ....................................... 30
APPENIDIX.B (Reference): Note on Each Device Architecture ........................................................................... 33
B.1. One-chip microcontroller w/HSM EVITA-Medium .............................................................................................. 33
B.1.1. System configuration and prerequisites ........................................................................................................... 33
