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authorJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2015-05-30 08:09:04 +0300
committerPeter Huewe <peterhuewe@gmx.de>2015-10-19 01:01:21 +0200
commit954650efb79f99d5c817c121bb0a7c6c53362048 (patch)
tree12da28fd54da6f329cdfe83b42e65a0479313b0e /include
parentfe351e8d4eec801beeba1df1f36d76316be6f1a2 (diff)
tpm: seal/unseal for TPM 2.0
Added tpm_trusted_seal() and tpm_trusted_unseal() API for sealing trusted keys. This patch implements basic sealing and unsealing functionality for TPM 2.0: * Seal with a parent key using a 20 byte auth value. * Unseal with a parent key using a 20 byte auth value. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Diffstat (limited to 'include')
-rw-r--r--include/keys/trusted-type.h2
-rw-r--r--include/linux/tpm.h26
2 files changed, 27 insertions, 1 deletions
diff --git a/include/keys/trusted-type.h b/include/keys/trusted-type.h
index c91651f91687..f91ecd9d1bb1 100644
--- a/include/keys/trusted-type.h
+++ b/include/keys/trusted-type.h
@@ -16,7 +16,7 @@
#define MIN_KEY_SIZE 32
#define MAX_KEY_SIZE 128
-#define MAX_BLOB_SIZE 320
+#define MAX_BLOB_SIZE 512
#define MAX_PCRINFO_SIZE 64
struct trusted_key_payload {
diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index 8350c538b486..706e63eea080 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -30,6 +30,8 @@
#define TPM_ANY_NUM 0xFFFF
struct tpm_chip;
+struct trusted_key_payload;
+struct trusted_key_options;
struct tpm_class_ops {
const u8 req_complete_mask;
@@ -46,11 +48,22 @@ struct tpm_class_ops {
#if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
+extern int tpm_is_tpm2(u32 chip_num);
extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf);
extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash);
extern int tpm_send(u32 chip_num, void *cmd, size_t buflen);
extern int tpm_get_random(u32 chip_num, u8 *data, size_t max);
+extern int tpm_seal_trusted(u32 chip_num,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options);
+extern int tpm_unseal_trusted(u32 chip_num,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options);
#else
+static inline int tpm_is_tpm2(u32 chip_num)
+{
+ return -ENODEV;
+}
static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) {
return -ENODEV;
}
@@ -63,5 +76,18 @@ static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) {
static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) {
return -ENODEV;
}
+
+static inline int tpm_seal_trusted(u32 chip_num,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options)
+{
+ return -ENODEV;
+}
+static inline int tpm_unseal_trusted(u32 chip_num,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options)
+{
+ return -ENODEV;
+}
#endif
#endif

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