diff mbox series

[v2,3/8] oid_registry: Add TCG defined OIDS for TPM keys

Message ID 1575936406.31378.53.camel@HansenPartnership.com (mailing list archive)
State New, archived
Headers show
Series Fix TPM 2.0 trusted keys | expand

Commit Message

James Bottomley Dec. 10, 2019, 12:06 a.m. UTC
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.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---
 include/linux/oid_registry.h | 5 +++++
 1 file changed, 5 insertions(+)

Comments

David Woodhouse Dec. 10, 2019, 8:18 a.m. UTC | #1
On Mon, 2019-12-09 at 16:06 -0800, James Bottomley wrote:
> +       /* TCG defined OIDS for TPM based keys */
> +       OID_TPMLoadableKey,             /* 2.23.133.10.1.3 */
> +       OID_TPMImporableKey,            /* 2.23.133.10.1.4 */


There's a t missing from OID_TPMImpoTableKey. Sorry, missed that last
time.
James Bottomley Dec. 10, 2019, 1:22 p.m. UTC | #2
On Tue, 2019-12-10 at 08:18 +0000, David Woodhouse wrote:
> On Mon, 2019-12-09 at 16:06 -0800, James Bottomley wrote:
> > +       /* TCG defined OIDS for TPM based keys */
> > +       OID_TPMLoadableKey,             /* 2.23.133.10.1.3 */
> > +       OID_TPMImporableKey,            /* 2.23.133.10.1.4 */
> 
> 
> There's a t missing from OID_TPMImpoTableKey. Sorry, missed that last
> time.

Heh, yes, will fix.

James
diff mbox series

Patch

diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h
index 657d6bf2c064..a4cee888f9b0 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_TPMImporableKey,		/* 2.23.133.10.1.4 */
+	OID_TPMSealedData,		/* 2.23.133.10.1.5 */
+
 	OID__NR
 };