linux-kernel - Re: [PATCH 0/2] public key: IMA signer logging: Log public key of IMA Signature signer in IMA log

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Message-ID: <715a9b39-0cde-1ce0-2d01-68d4fc0f5333@linux.microsoft.com>
Date:   Wed, 15 May 2019 11:17:52 -0700
From:   Lakshmi <nramas@...ux.microsoft.com>
To:     Mimi Zohar <zohar@...ux.ibm.com>,
        Linux Integrity <linux-integrity@...r.kernel.org>,
        David Howells <dhowells@...hat.com>,
        James Morris <jamorris@...ux.microsoft.com>,
        Linux Kernel <linux-kernel@...r.kernel.org>
Cc:     Balaji Balasubramanyan <balajib@...ux.microsoft.com>,
        Prakhar Srivastava <prsriva@...ux.microsoft.com>
Subject: Re: [PATCH 0/2] public key: IMA signer logging: Log public key of IMA
 Signature signer in IMA log

Hi Mimi,

I would like to make sure I understood your feedback.

> 
> Why duplicate the certificate info on each record in the measurement
> list?  Why not add the certificate info once, as the key is loaded
> onto the .ima and .platform keyrings?
> 
> Mimi
> 

key_create_or_update function in security/keys/key.c is called to 
add\update a key to a keyring. Are you suggesting that an IMA function 
be called from here to add the certificate info to the IMA log?

Our requirement is that the key information is available in the IMA log 
which is TPM backed.

Thanks,
  -lakshmi