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diff --git a/security-blueprint/part-1/0_Abstract.md b/security-blueprint/part-1/0_Abstract.md new file mode 100644 index 0000000..188c911 --- /dev/null +++ b/security-blueprint/part-1/0_Abstract.md @@ -0,0 +1,70 @@ +# Part 1 - Hardware + +## Abstract + +You will find in this first part everything that concerns the hardware security. +The goal is to protect system against all attacks that are trying to gain +additional privileges by recovering and/or changing cryptographic keys in order +to alter the integrity of the boot. We should also prevent hardware modifications +in order to achieve this goal. We will expose below some examples of possible +configurations. + +-------------------------------------------------------------------------------- + +## Acronyms and Abbreviations + +The following table lists the terms utilized within this part of the document. + +Acronyms or Abbreviations | Description +------------------------- | -------------------------------------- +_HSM_ | **H**ardware **S**ecurity **M**odule +_NVM_ | **N**on-**V**olatile **M**emory +_SHE_ | **S**ecure **H**ardware **E**xtensions + +-------------------------------------------------------------------------------- + +## Integrity + +The board must store hardcoded cryptographic keys in order to verify among others +the _integrity_ of the _bootloader_. Manufacturers can use **HSM** and **SHE** to +enhance the security of their board. + +<!-- config --> + +Domain | Object | Recommendations +-------------------- | ---------- | ---------------------------------- +Hardware-Integrity-1 | Bootloader | Must control bootloader integrity. +Hardware-Integrity-2 | Board | Must use a HSM. +Hardware-Integrity-3 | RTC | Must not be alterable. + +<!-- endconfig --> + +-------------------------------------------------------------------------------- + +<!-- pagebreak --> + +## Certificates + +<!-- config --> + +Domain | Object | Recommendations +---------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------- +Hardware-Certificate-1 | System | Shall allow storing dedicated certificates. +Hardware-Certificate-2 | ECU | The ECU must verify the certification authority hierarchy. +Hardware-Certificate-3 | System | Allow the modification of certificates only if the source can be authenticated by a certificate already stored or in the higher levels of the chain of trust. + +<!-- endconfig --> + +-------------------------------------------------------------------------------- + +## Memory + +<!-- config --> + +Domain | Object | Recommendations +----------------- | ---------- | ------------------------------------------------------------------------------------ +Hardware-Memory-1 | ECU | The ECU shall never expose the unencrypted key in RAM when using cryptographic keys. +Hardware-Memory-2 | Bootloader | Internal NVM only +Hardware-Module-3 | - | HSM must be used to secure keys. + +<!-- endconfig --> |