linux-kernel - [PATCH 2/2] tpm: use SM3 instead of SM3

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Message-Id: <20211009130828.101396-3-tianjia.zhang@linux.alibaba.com>
Date:   Sat,  9 Oct 2021 21:08:28 +0800
From:   Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To:     James Bottomley <jejb@...ux.ibm.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        Jonathan Corbet <corbet@....net>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Peter Huewe <peterhuewe@....de>,
        Jason Gunthorpe <jgg@...pe.ca>,
        David Howells <dhowells@...hat.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Jerry Snitselaar <jsnitsel@...hat.com>,
        linux-integrity@...r.kernel.org, keyrings@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, linux-security-module@...r.kernel.org
Cc:     Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Subject: [PATCH 2/2] tpm: use SM3 instead of SM3_256

According to https://tools.ietf.org/id/draft-oscca-cfrg-sm3-01.html,
SM3 always produces a 256-bit hash value and there are no plans for
other length development, so there is no ambiguity in the name of sm3.

Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
---
 drivers/char/tpm/tpm-sysfs.c              | 4 ++--
 drivers/char/tpm/tpm2-cmd.c               | 2 +-
 include/linux/tpm.h                       | 2 +-
 security/keys/trusted-keys/trusted_tpm2.c | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
index 63f03cfb8e6a..fe6c785dc84a 100644
--- a/drivers/char/tpm/tpm-sysfs.c
+++ b/drivers/char/tpm/tpm-sysfs.c
@@ -471,7 +471,7 @@ PCR_ATTR_BUILD(TPM_ALG_SHA1, sha1);
 PCR_ATTR_BUILD(TPM_ALG_SHA256, sha256);
 PCR_ATTR_BUILD(TPM_ALG_SHA384, sha384);
 PCR_ATTR_BUILD(TPM_ALG_SHA512, sha512);
-PCR_ATTR_BUILD(TPM_ALG_SM3_256, sm3);
+PCR_ATTR_BUILD(TPM_ALG_SM3, sm3);
 
 
 void tpm_sysfs_add_device(struct tpm_chip *chip)
@@ -500,7 +500,7 @@ void tpm_sysfs_add_device(struct tpm_chip *chip)
 		case TPM_ALG_SHA512:
 			chip->groups[chip->groups_cnt++] = &pcr_group_sha512;
 			break;
-		case TPM_ALG_SM3_256:
+		case TPM_ALG_SM3:
 			chip->groups[chip->groups_cnt++] = &pcr_group_sm3;
 			break;
 		default:
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 20f55de9d87b..d5a9410d2273 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -19,7 +19,7 @@ static struct tpm2_hash tpm2_hash_map[] = {
 	{HASH_ALGO_SHA256, TPM_ALG_SHA256},
 	{HASH_ALGO_SHA384, TPM_ALG_SHA384},
 	{HASH_ALGO_SHA512, TPM_ALG_SHA512},
-	{HASH_ALGO_SM3, TPM_ALG_SM3_256},
+	{HASH_ALGO_SM3, TPM_ALG_SM3},
 };
 
 int tpm2_get_timeouts(struct tpm_chip *chip)
diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index aa11fe323c56..56a79fee1250 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -40,7 +40,7 @@ enum tpm_algorithms {
 	TPM_ALG_SHA384		= 0x000C,
 	TPM_ALG_SHA512		= 0x000D,
 	TPM_ALG_NULL		= 0x0010,
-	TPM_ALG_SM3_256		= 0x0012,
+	TPM_ALG_SM3		= 0x0012,
 };
 
 /*
diff --git a/security/keys/trusted-keys/trusted_tpm2.c b/security/keys/trusted-keys/trusted_tpm2.c
index 52a696035176..b15a9961213d 100644
--- a/security/keys/trusted-keys/trusted_tpm2.c
+++ b/security/keys/trusted-keys/trusted_tpm2.c
@@ -23,7 +23,7 @@ static struct tpm2_hash tpm2_hash_map[] = {
 	{HASH_ALGO_SHA256, TPM_ALG_SHA256},
 	{HASH_ALGO_SHA384, TPM_ALG_SHA384},
 	{HASH_ALGO_SHA512, TPM_ALG_SHA512},
-	{HASH_ALGO_SM3, TPM_ALG_SM3_256},
+	{HASH_ALGO_SM3, TPM_ALG_SM3},
 };
 
 static u32 tpm2key_oid[] = { 2, 23, 133, 10, 1, 5 };
-- 
2.19.1.3.ge56e4f7