[PATCH v2 14/14] virt: arm-cca-guest: TSM_REPORT support for realms

Suzuki K Poulose suzuki.poulose at arm.com
Wed Apr 24 06:27:41 PDT 2024


On 24/04/2024 14:06, Thomas Fossati wrote:
> Hi Steven, Sami,
> 
> On Fri, 12 Apr 2024 at 10:47, Steven Price <steven.price at arm.com> wrote:
>> +/**
>> + * arm_cca_report_new - Generate a new attestation token.
>> + *
>> + * @report: pointer to the TSM report context information.
>> + * @data:  pointer to the context specific data for this module.
>> + *
>> + * Initialise the attestation token generation using the challenge data
>> + * passed in the TSM decriptor.
> 
> Here, it'd be good to document two interesting facts about challenge data:
> 1. It must be at least 32 bytes, and
> 2. If its size is less than 64 bytes, it will be zero-padded.

Agreed !

Suzuki

> 
> cheers!




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