From 1c6476e9741e30be57e0b370d4405214f055607c Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Wed, 27 Jan 2021 11:06:14 -0800 Subject: oid_registry: Add TCG defined OIDS for TPM keys 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 Reviewed-by: David Howells Acked-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen --- include/linux/oid_registry.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux/oid_registry.h') 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, /* 1.2.156.10197.1.501 */ OID_sm3WithRSAEncryption, /* 1.2.156.10197.1.504 */ + /* 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 }; -- cgit v1.2.3