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Date: Mon, 17 Feb 2020 17:36:48 +0800
From: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To: herbert@...dor.apana.org.au, davem@...emloft.net,
jarkko.sakkinen@...ux.intel.com, zohar@...ux.ibm.com,
ebiggers@...nel.org, dmitry.kasatkin@...il.com, jmorris@...ei.org,
serge@...lyn.com
Cc: linux-crypto@...r.kernel.org, linux-integrity@...r.kernel.org,
linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] crypto: fix mismatched hash algorithm name sm3-256 to sm3
The name sm3-256 is defined in hash_algo_name in hash_info, but the
algorithm name implemented in sm3_generic.c is sm3, which will cause
the sm3-256 algorithm to be not found in some application scenarios of
the hash algorithm, and an ENOENT error will occur. For example,
IMA, keys, and other subsystems that reference hash_algo_name all use
the hash algorithm of sm3.
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>
Cc: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
---
Documentation/security/keys/trusted-encrypted.rst | 2 +-
crypto/hash_info.c | 4 ++--
drivers/char/tpm/tpm2-cmd.c | 2 +-
include/crypto/hash_info.h | 2 +-
include/linux/tpm.h | 2 +-
include/uapi/linux/hash_info.h | 2 +-
security/keys/trusted-keys/trusted_tpm2.c | 2 +-
7 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/Documentation/security/keys/trusted-encrypted.rst b/Documentation/security/keys/trusted-encrypted.rst
index 50ac8bcd6970..5b6fea88f335 100644
--- a/Documentation/security/keys/trusted-encrypted.rst
+++ b/Documentation/security/keys/trusted-encrypted.rst
@@ -66,7 +66,7 @@ Usage::
default 1 (resealing allowed)
hash= hash algorithm name as a string. For TPM 1.x the only
allowed value is sha1. For TPM 2.x the allowed values
- are sha1, sha256, sha384, sha512 and sm3-256.
+ are sha1, sha256, sha384, sha512 and sm3.
policydigest= digest for the authorization policy. must be calculated
with the same hash algorithm as specified by the 'hash='
option.
diff --git a/crypto/hash_info.c b/crypto/hash_info.c
index c754cb75dd1a..fe0119407219 100644
--- a/crypto/hash_info.c
+++ b/crypto/hash_info.c
@@ -26,7 +26,7 @@ const char *const hash_algo_name[HASH_ALGO__LAST] = {
[HASH_ALGO_TGR_128] = "tgr128",
[HASH_ALGO_TGR_160] = "tgr160",
[HASH_ALGO_TGR_192] = "tgr192",
- [HASH_ALGO_SM3_256] = "sm3-256",
+ [HASH_ALGO_SM3] = "sm3",
[HASH_ALGO_STREEBOG_256] = "streebog256",
[HASH_ALGO_STREEBOG_512] = "streebog512",
};
@@ -50,7 +50,7 @@ const int hash_digest_size[HASH_ALGO__LAST] = {
[HASH_ALGO_TGR_128] = TGR128_DIGEST_SIZE,
[HASH_ALGO_TGR_160] = TGR160_DIGEST_SIZE,
[HASH_ALGO_TGR_192] = TGR192_DIGEST_SIZE,
- [HASH_ALGO_SM3_256] = SM3256_DIGEST_SIZE,
+ [HASH_ALGO_SM3] = SM3_DIGEST_SIZE,
[HASH_ALGO_STREEBOG_256] = STREEBOG256_DIGEST_SIZE,
[HASH_ALGO_STREEBOG_512] = STREEBOG512_DIGEST_SIZE,
};
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 13696deceae8..44412538e47c 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_256, TPM_ALG_SM3_256},
+ {HASH_ALGO_SM3, TPM_ALG_SM3},
};
int tpm2_get_timeouts(struct tpm_chip *chip)
diff --git a/include/crypto/hash_info.h b/include/crypto/hash_info.h
index eb9d2e368969..07cd6e0b0fee 100644
--- a/include/crypto/hash_info.h
+++ b/include/crypto/hash_info.h
@@ -31,7 +31,7 @@
#define TGR192_DIGEST_SIZE 24
/* not defined in include/crypto/ */
-#define SM3256_DIGEST_SIZE 32
+#define SM3_DIGEST_SIZE 32
extern const char *const hash_algo_name[HASH_ALGO__LAST];
extern const int hash_digest_size[HASH_ALGO__LAST];
diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index 03e9b184411b..042c3eb5f051 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -39,7 +39,7 @@ enum tpm_algorithms {
TPM_ALG_SHA384 = 0x000C,
TPM_ALG_SHA512 = 0x000D,
TPM_ALG_NULL = 0x0010,
- TPM_ALG_SM3_256 = 0x0012,
+ TPM_ALG_SM3 = 0x0012,
};
struct tpm_digest {
diff --git a/include/uapi/linux/hash_info.h b/include/uapi/linux/hash_info.h
index 74a8609fcb4d..1355525dd4aa 100644
--- a/include/uapi/linux/hash_info.h
+++ b/include/uapi/linux/hash_info.h
@@ -32,7 +32,7 @@ enum hash_algo {
HASH_ALGO_TGR_128,
HASH_ALGO_TGR_160,
HASH_ALGO_TGR_192,
- HASH_ALGO_SM3_256,
+ HASH_ALGO_SM3,
HASH_ALGO_STREEBOG_256,
HASH_ALGO_STREEBOG_512,
HASH_ALGO__LAST
diff --git a/security/keys/trusted-keys/trusted_tpm2.c b/security/keys/trusted-keys/trusted_tpm2.c
index 08ec7f48f01d..cbd5574a88c8 100644
--- a/security/keys/trusted-keys/trusted_tpm2.c
+++ b/security/keys/trusted-keys/trusted_tpm2.c
@@ -17,7 +17,7 @@ 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_256, TPM_ALG_SM3_256},
+ {HASH_ALGO_SM3, TPM_ALG_SM3},
};
/**
--
2.17.1
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