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Re: [PATCH 0/8] X.509: Software public key subtype changes

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On Mon, 2016-02-22 at 22:29 +0000, David Howells wrote:
> Mimi Zohar <zohar@linux.vnet.ibm.com> wrote:
> 
> > >  (1) - (3) These are Tadeusz's RSA akcipher conversion.
> > 
> > Up to here, IMA-appraisal works properly.
> 
> I don't have IMA set up anywhere.

I know.  With the "vfs: support for a common kernel file loader" patch
set, setting up a simple test becomes a lot simpler.  With this patch
set you can measure and appraise just the kexec image and initramfs,
firmware and/or kernel modules.

Create two key pairs.  Add one to the system keyring.*   The other key
load on the IMA keyring.  (Remember it needs to be signed with the
private key of a key on the system keyring.**)

To measure and appraise just the kexec initramfs, define a policy
containing:
measure func=INITRAMFS_CHECK
appraise func=INITRAMFS_CHECK appraise_type=imasig

To load the IMA policy, write the policy to the securityfs IMA policy
file:
cat <IMA policy> > /sys/kernel/securityfs/ima/policy.

Sign the kexec initramfs using evmctl:
evmctl ima_sign -k <privkey.pem> -a sha256 /boot/<initramfs>.img

Execute:  kexec -s -l /boot/<image> --initrd=/boot/<initramfs>.img
--reuse-cmdline
Failures to appraise the initramfs are audit logged.  The IMA
measurement list will contain the initramfs file hash.

*There are two or three methods for loading the key onto the system
keyring depending on the distro.
- builtin
- enroll in MoK db (on some distros)
- Mehmet's patch  (needs to be upstreamed)

** Refer to the ima-evm-utils package README for further details on
creating and signing a certificate to be loaded on the IMA keyring.

Mimi

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[PATCH 0/8] X.509: Software public key subtype changes David Howells <dhowells@redhat.com> - 2016-02-19 18:20 +0100
  [PATCH 6/8] X.509: Make the public_key asymmetric key type internal  data private David Howells <dhowells@redhat.com> - 2016-02-19 18:20 +0100
  [PATCH 1/8] crypto: KEYS: convert public key and digsig asym to the  akcipher api David Howells <dhowells@redhat.com> - 2016-02-19 18:20 +0100
  [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto layer David Howells <dhowells@redhat.com> - 2016-02-19 18:30 +0100
    Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto  layer Tadeusz Struk <tadeusz.struk@intel.com> - 2016-02-22 21:10 +0100
      Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto layer David Howells <dhowells@redhat.com> - 2016-02-22 23:30 +0100
        Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto  layer Tadeusz Struk <tadeusz.struk@intel.com> - 2016-02-23 00:40 +0100
          Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto layer David Howells <dhowells@redhat.com> - 2016-02-23 12:00 +0100
            [PATCH 0/2] KEYS: Use pkcs1pad for padding in software_pkey Tadeusz Struk <tadeusz.struk@intel.com> - 2016-02-24 18:20 +0100
              Re: [PATCH 0/2] KEYS: Use pkcs1pad for padding in software_pkey David Howells <dhowells@redhat.com> - 2016-02-24 18:30 +0100
        Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto layer Andrew Zaborowski <balrogg@googlemail.com> - 2016-02-23 01:10 +0100
          Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto layer David Howells <dhowells@redhat.com> - 2016-02-23 12:00 +0100
            Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto layer Andrew Zaborowski <balrogg@googlemail.com> - 2016-02-23 12:30 +0100
              Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto layer David Howells <dhowells@redhat.com> - 2016-02-26 12:50 +0100
    Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto  layer Mimi Zohar <zohar@linux.vnet.ibm.com> - 2016-02-24 06:10 +0100
      Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto  layer Mimi Zohar <zohar@linux.vnet.ibm.com> - 2016-02-24 07:10 +0100
        Re: [PATCH 4/8] akcipher: Move the RSA DER encoding to the crypto layer David Howells <dhowells@redhat.com> - 2016-02-29 16:40 +0100
  [PATCH 7/8] X.509: Rename public_key.c to software_pkey.c David Howells <dhowells@redhat.com> - 2016-02-19 18:30 +0100
  [PATCH 5/8] X.509: Make algo identifiers text instead of enum David Howells <dhowells@redhat.com> - 2016-02-19 18:30 +0100
  [PATCH 8/8] X.509: Rename public_key* to software_pkey* David Howells <dhowells@redhat.com> - 2016-02-19 18:30 +0100
  Re: [PATCH 0/8] X.509: Software public key subtype changes Mimi Zohar <zohar@linux.vnet.ibm.com> - 2016-02-22 20:00 +0100
    Re: [PATCH 0/8] X.509: Software public key subtype changes David Howells <dhowells@redhat.com> - 2016-02-22 23:30 +0100
      Re: [PATCH 0/8] X.509: Software public key subtype changes Mimi Zohar <zohar@linux.vnet.ibm.com> - 2016-02-23 01:10 +0100
        Re: [PATCH 0/8] X.509: Software public key subtype changes David Howells <dhowells@redhat.com> - 2016-02-23 11:20 +0100
          Re: [PATCH 0/8] X.509: Software public key subtype changes Mimi Zohar <zohar@linux.vnet.ibm.com> - 2016-02-23 13:30 +0100
  Re: [PATCH 0/8] X.509: Software public key subtype changes Tadeusz Struk <tadeusz.struk@intel.com> - 2016-02-22 21:10 +0100

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