Messages in this thread | | | From | Sumit Garg <> | Date | Thu, 14 May 2020 16:53:34 +0530 | Subject | Re: [PATCH v4 1/4] KEYS: trusted: Add generic trusted keys framework |
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On Thu, 14 May 2020 at 05:55, Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> wrote: > > On Wed, 2020-05-06 at 15:10 +0530, Sumit Garg wrote: > > Current trusted keys framework is tightly coupled to use TPM device as > > an underlying implementation which makes it difficult for implementations > > like Trusted Execution Environment (TEE) etc. to provide trusked keys > > support in case platform doesn't posses a TPM device. > > > > So this patch tries to add generic trusted keys framework where underlying > > implemtations like TPM, TEE etc. could be easily plugged-in. > > > > Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > Signed-off-by: Sumit Garg <sumit.garg@linaro.org> > > I tend to agree how this is implemented and could merge it as such. > > I'm just thinking if we could refine this patch in a way that instead of > copying TRUSTED_DEBUG macro we could just replace pr_info() statements > with pr_debug()?
AFAIU, TRUSTED_DEBUG being a security sensitive operation is only meant to be used in development environments and should be strictly disabled in production environments. But it may not always be true with pr_debug() with CONFIG_DYNAMIC_DEBUG=y which allows the debug paths to be compiled into the kernel which can be enabled/disabled at runtime.
IMO we should keep this TRUSTED_DEBUG macro, so that users are aware of its security sensitive nature and need to explicitly enable it to debug.
-Sumit
> > /Jarkko >
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