[RFC PATCH 1/2] tpm: add some algorithm and constant definitions from the TPM spec

Ignat Korchagin
2024-05-03T22:17:06Z

In preparation for implementing TPM derived keys we need to use some new TPM
functionality in the kernel, so add relevant constant definitions.

Signed-off-by: Ignat Korchagin <ignat@cloudflare.com>
---
include/linux/tpm.h | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index 4ee9d13749ad..5be0808b1b91 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -35,6 +35,7 @@ struct trusted_key_options;
enum tpm_algorithms {
TPM_ALG_ERROR = 0x0000,
TPM_ALG_SHA1 = 0x0004,
+ TPM_ALG_HMAC = 0x0005,
TPM_ALG_KEYEDHASH = 0x0008,
TPM_ALG_SHA256 = 0x000B,
TPM_ALG_SHA384 = 0x000C,
@@ -209,6 +210,7 @@ enum tpm2_return_codes {
TPM2_RC_DISABLED = 0x0120,
TPM2_RC_UPGRADE = 0x012D,
TPM2_RC_COMMAND_CODE = 0x0143,
+ TPM2_RC_OBJECT_MEMORY = 0x0902,
TPM2_RC_TESTING = 0x090A, /* RC_WARN */
TPM2_RC_REFERENCE_H0 = 0x0910,
TPM2_RC_RETRY = 0x0922,
@@ -227,6 +229,7 @@ enum tpm2_command_codes {
TPM2_CC_CREATE = 0x0153,
TPM2_CC_LOAD = 0x0157,
TPM2_CC_SEQUENCE_UPDATE = 0x015C,
+ TPM2_CC_SIGN = 0x015D,
TPM2_CC_UNSEAL = 0x015E,
TPM2_CC_CONTEXT_LOAD = 0x0161,
TPM2_CC_CONTEXT_SAVE = 0x0162,
@@ -234,6 +237,7 @@ enum tpm2_command_codes {
TPM2_CC_VERIFY_SIGNATURE = 0x0177,
TPM2_CC_GET_CAPABILITY = 0x017A,
TPM2_CC_GET_RANDOM = 0x017B,
+ TPM2_CC_HASH = 0x017D,
TPM2_CC_PCR_READ = 0x017E,
TPM2_CC_PCR_EXTEND = 0x0182,
TPM2_CC_EVENT_SEQUENCE_COMPLETE = 0x0185,
@@ -243,7 +247,8 @@ enum tpm2_command_codes {
};

enum tpm2_permanent_handles {
- TPM2_RS_PW = 0x40000009,
+ TPM2_RH_OWNER = 0x40000001,
+ TPM2_RS_PW = 0x40000009,
};

enum tpm2_capabilities {
@@ -312,9 +317,12 @@ struct tpm_buf {
};

enum tpm2_object_attributes {
- TPM2_OA_FIXED_TPM = BIT(1),
- TPM2_OA_FIXED_PARENT = BIT(4),
- TPM2_OA_USER_WITH_AUTH = BIT(6),
+ TPM2_OA_FIXED_TPM = BIT(1),
+ TPM2_OA_FIXED_PARENT = BIT(4),
+ TPM2_OA_SENSITIVE_DATA_ORIGIN = BIT(5),
+ TPM2_OA_USER_WITH_AUTH = BIT(6),
+ TPM2_OA_RESTRICTED = BIT(16),
+ TPM2_OA_SIGN = BIT(18),
};

enum tpm2_session_attributes {
--
2.39.2