[prev in list] [next in list] [prev in thread] [next in thread]
List: linux-keyrings
Subject: Re: [PATCH v5 0/6] TPM 2.0 trusted keys with attached policy
From: Jarkko Sakkinen <jarkko.sakkinen () linux ! intel ! com>
Date: 2020-02-20 20:17:03
Message-ID: 20200220201703.GA24990 () linux ! intel ! com
[Download RAW message or body]
On Thu, Jan 30, 2020 at 11:18:06AM +0100, James Bottomley wrote:
> This is mainly a respin to add more spacing as Jarkko requested.
> However, I also added the seal/unseal operations to the
> openssl_tpm2_engine (next branch):
>
> https://git.kernel.org/pub/scm/linux/kernel/git/jejb/openssl_tpm2_engine.git/
>
> With the result that the kernel code completely failed the
> interoperability checks because the ASN.1 format requires the TPM2B
> length prepended to the public and private blobs. I corrected this in
> patch 4 and now all the interoperability tests are passing.
>
> General cover letter:
>
> This patch updates the trusted key code to export keys in the ASN.1
> format used by current TPM key tools (openssl_tpm2_engine and
> openconnect). It also simplifies the use of policy with keys because
> the ASN.1 format is designed to carry a description of how to
> construct the policy, with the result that simple policies (like
> authorization and PCR locking) can now be constructed and used in the
> kernel, bringing the TPM 2.0 policy use into line with how TPM 1.2
> works.
>
> James
>
> ---
>
> James Bottomley (6):
> lib: add ASN.1 encoder
> oid_registry: Add TCG defined OIDS for TPM keys
> security: keys: trusted fix tpm2 authorizations
> security: keys: trusted: use ASN.1 TPM2 key format for the blobs
> security: keys: trusted: add ability to specify arbitrary policy
> security: keys: trusted: implement counter/timer policy
>
> Documentation/security/keys/trusted-encrypted.rst | 64 ++-
> include/keys/trusted-type.h | 7 +-
> include/linux/asn1_encoder.h | 32 ++
> include/linux/oid_registry.h | 5 +
> include/linux/tpm.h | 8 +
> lib/Makefile | 2 +-
> lib/asn1_encoder.c | 431 ++++++++++++++++++++
> security/keys/Kconfig | 2 +
> security/keys/trusted-keys/Makefile | 2 +-
> security/keys/trusted-keys/tpm2-policy.c | 463 ++++++++++++++++++++++
> security/keys/trusted-keys/tpm2-policy.h | 31 ++
> security/keys/trusted-keys/tpm2key.asn1 | 23 ++
> security/keys/trusted-keys/trusted_tpm1.c | 50 ++-
> security/keys/trusted-keys/trusted_tpm2.c | 370 +++++++++++++++--
> 14 files changed, 1454 insertions(+), 36 deletions(-)
> create mode 100644 include/linux/asn1_encoder.h
> create mode 100644 lib/asn1_encoder.c
> create mode 100644 security/keys/trusted-keys/tpm2-policy.c
> create mode 100644 security/keys/trusted-keys/tpm2-policy.h
> create mode 100644 security/keys/trusted-keys/tpm2key.asn1
>
> --
> 2.16.4
Somehow managed to drown this to my emails. Looking into next week.
/Jarkko
>
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic