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authorDenis Kenzior <denkenz@gmail.com>2018-10-09 19:48:17 +0300
committerJames Morris <james.morris@microsoft.com>2018-10-26 11:30:46 +0300
commitd5e72745ca121459f68c598dac7b374a76322b94 (patch)
treefbe5574be8ae84efcdf4a19f5c634b819b8e66ad /crypto/asymmetric_keys/Kconfig
parentf8c54e1ac4b82933dfcf88c37892da8ae35ccbe4 (diff)
downloadlinux-d5e72745ca121459f68c598dac7b374a76322b94.tar.xz
KEYS: Add parser for TPM-based keys [ver #2]
For TPM based keys, the only standard seems to be described here: http://david.woodhou.se/draft-woodhouse-cert-best-practice.html#rfc.section.4.4 Quote from the relevant section: "Rather, a common form of storage for "wrapped" keys is to encode the binary TCPA_KEY structure in a single ASN.1 OCTET-STRING, and store the result in PEM format with the tag "-----BEGIN TSS KEY BLOB-----". " This patch implements the above behavior. It is assumed that the PEM encoding is stripped out by userspace and only the raw DER/BER format is provided. This is similar to how PKCS7, PKCS8 and X.509 keys are handled. Signed-off-by: Denis Kenzior <denkenz@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Marcel Holtmann <marcel@holtmann.org> Reviewed-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: James Morris <james.morris@microsoft.com>
Diffstat (limited to 'crypto/asymmetric_keys/Kconfig')
-rw-r--r--crypto/asymmetric_keys/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/crypto/asymmetric_keys/Kconfig b/crypto/asymmetric_keys/Kconfig
index b75555c7d8ae..88353a9ebc9b 100644
--- a/crypto/asymmetric_keys/Kconfig
+++ b/crypto/asymmetric_keys/Kconfig
@@ -52,6 +52,15 @@ config PKCS8_PRIVATE_KEY_PARSER
private key data and provides the ability to instantiate a crypto key
from that data.
+config TPM_KEY_PARSER
+ tristate "TPM private key parser"
+ depends on ASYMMETRIC_TPM_KEY_SUBTYPE
+ select ASN1
+ help
+ This option provides support for parsing TPM format blobs for
+ private key data and provides the ability to instantiate a crypto key
+ from that data.
+
config PKCS7_MESSAGE_PARSER
tristate "PKCS#7 message parser"
depends on X509_CERTIFICATE_PARSER