diff mbox series

[v15,2/5] oid_registry: Add TCG defined OIDS for TPM keys

Message ID 20210127190617.17564-3-James.Bottomley@HansenPartnership.com (mailing list archive)
State New
Headers show
Series TPM 2.0 trusted key rework | expand

Commit Message

James Bottomley Jan. 27, 2021, 7:06 p.m. UTC
The TCG has defined an OID prefix "" for the various TPM
key uses.  We've defined three of the available numbers: TPM Loadable key.  This is an asymmetric key (Usually
		RSA2048 or Elliptic Curve) which can be imported by a
		TPM2_Load() operation. 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. 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

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 mbox series


diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h
index 4462ed2c18cd..d06988d1565e 100644
--- a/include/linux/oid_registry.h
+++ b/include/linux/oid_registry.h
@@ -113,6 +113,11 @@  enum OID {
 	OID_SM2_with_SM3,		/* */
 	OID_sm3WithRSAEncryption,	/* */
+	/* TCG defined OIDS for TPM based keys */
+	OID_TPMLoadableKey,		/* */
+	OID_TPMImportableKey,		/* */
+	OID_TPMSealedData,		/* */