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From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: linux-integrity@vger.kernel.org
Cc: Mimi Zohar <zohar@linux.ibm.com>,
	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
	David Woodhouse <dwmw2@infradead.org>,
	keyrings@vger.kernel.org, David Howells <dhowells@redhat.com>
Subject: [PATCH v10 2/8] oid_registry: Add TCG defined OIDS for TPM keys
Date: Tue, 16 Jun 2020 09:02:23 -0700
Message-ID: <20200616160229.8018-3-James.Bottomley@HansenPartnership.com> (raw)
In-Reply-To: <20200616160229.8018-1-James.Bottomley@HansenPartnership.com>

The TCG has defined an OID prefix "2.23.133.10.1" for the various TPM
key uses.  We've defined three of the available numbers:

2.23.133.10.1.3 TPM Loadable key.  This is an asymmetric key (Usually
		RSA2048 or Elliptic Curve) which can be imported by a
		TPM2_Load() operation.

2.23.133.10.1.4 TPM Importable Key.  This is an asymmetric key (Usually
		RSA2048 or Elliptic Curve) which can be imported by a
		TPM2_Import() operation.

Both loadable and importable keys are specific to a given TPM, the
difference is that a loadable key is wrapped with the symmetric
secret, so must have been created by the TPM itself.  An importable
key is wrapped with a DH shared secret, and may be created without
access to the TPM provided you know the public part of the parent key.

2.23.133.10.1.5 TPM Sealed Data.  This is a set of data (up to 128
		bytes) which is sealed by the TPM.  It usually
		represents a symmetric key and must be unsealed before
		use.

The ASN.1 binary key form starts of with this OID as the first element
of a sequence, giving the binary form a unique recognizable identity
marker regardless of encoding.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Acked-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: David Howells <dhowells@redhat.com>

---

v3: correct OID_TPMImportableKey name
v7: add ack
v9: add review
---
 include/linux/oid_registry.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h
index 657d6bf2c064..f6e2276e5f30 100644
--- a/include/linux/oid_registry.h
+++ b/include/linux/oid_registry.h
@@ -107,6 +107,11 @@ enum OID {
 	OID_gostTC26Sign512B,		/* 1.2.643.7.1.2.1.2.2 */
 	OID_gostTC26Sign512C,		/* 1.2.643.7.1.2.1.2.3 */
 
+	/* TCG defined OIDS for TPM based keys */
+	OID_TPMLoadableKey,		/* 2.23.133.10.1.3 */
+	OID_TPMImportableKey,		/* 2.23.133.10.1.4 */
+	OID_TPMSealedData,		/* 2.23.133.10.1.5 */
+
 	OID__NR
 };
 
-- 
2.26.2


  parent reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-16 16:02 [PATCH v10 0/8] TPM 2.0 trusted keys with attached policy James Bottomley
2020-06-16 16:02 ` [PATCH v10 1/8] lib: add ASN.1 encoder James Bottomley
2020-06-16 16:02 ` James Bottomley [this message]
2020-06-17 21:42   ` [PATCH v10 2/8] oid_registry: Add TCG defined OIDS for TPM keys Jerry Snitselaar
2020-06-18  0:25     ` James Bottomley
2020-06-18  7:14       ` Jarkko Sakkinen
2020-06-18 19:22         ` James Bottomley
2020-06-22 22:04           ` Jarkko Sakkinen
2020-06-16 16:02 ` [PATCH v10 3/8] security: keys: trusted: fix TPM2 authorizations James Bottomley
2020-06-16 16:02 ` [PATCH v10 4/8] security: keys: trusted: use ASN.1 TPM2 key format for the blobs James Bottomley
2020-06-16 16:02 ` [PATCH v10 5/8] security: keys: trusted: Make sealed key properly interoperable James Bottomley
2020-06-17 23:46   ` Jarkko Sakkinen
2020-06-16 16:02 ` [PATCH v10 6/8] security: keys: trusted: add PCR policy to TPM2 keys James Bottomley
2020-06-17 23:44   ` Jarkko Sakkinen
2020-06-16 16:02 ` [PATCH v10 7/8] security: keys: trusted: add ability to specify arbitrary policy James Bottomley
2020-06-17 23:42   ` Jarkko Sakkinen
2020-06-18  0:27     ` James Bottomley
2020-06-18  7:12       ` Jarkko Sakkinen
2020-06-18 19:45         ` James Bottomley
2020-06-23  0:46           ` Jarkko Sakkinen
2020-06-16 16:02 ` [PATCH v10 8/8] security: keys: trusted: implement counter/timer policy James Bottomley

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