[16/17] asymmetric_keys: add TPM2 ASN1 definition

Commit Message

James Prestwood May 18, 2020, 5:27 p.m. UTC

Copied the TPM2 ASN1 definition from trusted-keys

Signed-off-by: James Prestwood <[e-mail]>
---
 crypto/asymmetric_keys/tpm2key.asn1 | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 crypto/asymmetric_keys/tpm2key.asn1

Patch

diff --git a/crypto/asymmetric_keys/tpm2key.asn1 b/crypto/asymmetric_keys/tpm2key.asn1
new file mode 100644
index 000000000000..f930fd812db3
--- /dev/null
+++ b/crypto/asymmetric_keys/tpm2key.asn1
@@ -0,0 +1,23 @@ 
+---
+--- Note: This isn't quite the definition in the standard
+---       However, the Linux asn.1 parser doesn't understand
+---       [2] EXPLICIT SEQUENCE OF OPTIONAL
+---       So there's an extra intermediate TPMPolicySequence
+---       definition to work around this
+
+TPMKey ::= SEQUENCE {
+	type		OBJECT IDENTIFIER ({tpmkey_type}),
+	emptyAuth	[0] EXPLICIT BOOLEAN OPTIONAL,
+	policy		[1] EXPLICIT TPMPolicySequence OPTIONAL,
+	secret		[2] EXPLICIT OCTET STRING OPTIONAL,
+	parent		INTEGER ({tpmkey_parent}),
+	pubkey		OCTET STRING ({tpmkey_pub}),
+	privkey		OCTET STRING ({tpmkey_priv})
+	}
+
+TPMPolicySequence ::= SEQUENCE OF TPMPolicy
+
+TPMPolicy ::= SEQUENCE {
+	commandCode		[0] EXPLICIT INTEGER ({tpmkey_code}),
+	commandPolicy		[1] EXPLICIT OCTET STRING ({tpmkey_policy})
+	}