From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Date: Thu, 30 Jan 2020 10:18:08 +0000 Subject: [PATCH v5 2/6] oid_registry: Add TCG defined OIDS for TPM keys Message-Id: <20200130101812.6271-3-James.Bottomley@HansenPartnership.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit List-Id: References: <20200130101812.6271-1-James.Bottomley@HansenPartnership.com> In-Reply-To: <20200130101812.6271-1-James.Bottomley@HansenPartnership.com> To: linux-integrity@vger.kernel.org Cc: Mimi Zohar , Jarkko Sakkinen , David Woodhouse , keyrings@vger.kernel.org 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 --- v3: correct OID_TPMImportableKey name --- 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 }; -- 2.16.4