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Date: Mon, 21 Oct 2013 18:42:47 -0400
From: Mimi Zohar <zohar@...ux.vnet.ibm.com>
To: linux-security-module@...r.kernel.org
Cc: Dmitry Kasatkin <d.kasatkin@...sung.com>,
linux-kernel@...r.kernel.org, James Morris <jmorris@...ei.org>,
David Howells <dhowells@...hat.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
Mimi Zohar <zohar@...ux.vnet.ibm.com>
Subject: [PATCH v2 02/23] keys: change asymmetric keys to use common hash definitions
From: Dmitry Kasatkin <d.kasatkin@...sung.com>
This patch makes use of the newly defined common hash algorithm info,
replacing, for example, PKEY_HASH with HASH_ALGO.
Changelog:
- Lindent fixes - Mimi
Signed-off-by: Dmitry Kasatkin <d.kasatkin@...sung.com>
Signed-off-by: Mimi Zohar <zohar@...ux.vnet.ibm.com>
---
crypto/asymmetric_keys/Kconfig | 1 +
crypto/asymmetric_keys/public_key.c | 12 ------------
crypto/asymmetric_keys/rsa.c | 14 +++++++-------
crypto/asymmetric_keys/x509_cert_parser.c | 12 ++++++------
crypto/asymmetric_keys/x509_parser.h | 2 ++
crypto/asymmetric_keys/x509_public_key.c | 9 ++++-----
include/crypto/public_key.h | 18 ++++--------------
kernel/module_signing.c | 8 ++++----
8 files changed, 28 insertions(+), 48 deletions(-)
diff --git a/crypto/asymmetric_keys/Kconfig b/crypto/asymmetric_keys/Kconfig
index 862b01f..82e7d6b 100644
--- a/crypto/asymmetric_keys/Kconfig
+++ b/crypto/asymmetric_keys/Kconfig
@@ -13,6 +13,7 @@ config ASYMMETRIC_PUBLIC_KEY_SUBTYPE
tristate "Asymmetric public-key crypto algorithm subtype"
select MPILIB
select PUBLIC_KEY_ALGO_RSA
+ select CRYPTO_HASH_INFO
help
This option provides support for asymmetric public key type handling.
If signature generation and/or verification are to be used,
diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c
index 49ac8d8..97eb001 100644
--- a/crypto/asymmetric_keys/public_key.c
+++ b/crypto/asymmetric_keys/public_key.c
@@ -36,18 +36,6 @@ const struct public_key_algorithm *pkey_algo[PKEY_ALGO__LAST] = {
};
EXPORT_SYMBOL_GPL(pkey_algo);
-const char *const pkey_hash_algo_name[PKEY_HASH__LAST] = {
- [PKEY_HASH_MD4] = "md4",
- [PKEY_HASH_MD5] = "md5",
- [PKEY_HASH_SHA1] = "sha1",
- [PKEY_HASH_RIPE_MD_160] = "rmd160",
- [PKEY_HASH_SHA256] = "sha256",
- [PKEY_HASH_SHA384] = "sha384",
- [PKEY_HASH_SHA512] = "sha512",
- [PKEY_HASH_SHA224] = "sha224",
-};
-EXPORT_SYMBOL_GPL(pkey_hash_algo_name);
-
const char *const pkey_id_type_name[PKEY_ID_TYPE__LAST] = {
[PKEY_ID_PGP] = "PGP",
[PKEY_ID_X509] = "X509",
diff --git a/crypto/asymmetric_keys/rsa.c b/crypto/asymmetric_keys/rsa.c
index 4a6a069..90a17f5 100644
--- a/crypto/asymmetric_keys/rsa.c
+++ b/crypto/asymmetric_keys/rsa.c
@@ -73,13 +73,13 @@ static const struct {
size_t size;
} RSA_ASN1_templates[PKEY_HASH__LAST] = {
#define _(X) { RSA_digest_info_##X, sizeof(RSA_digest_info_##X) }
- [PKEY_HASH_MD5] = _(MD5),
- [PKEY_HASH_SHA1] = _(SHA1),
- [PKEY_HASH_RIPE_MD_160] = _(RIPE_MD_160),
- [PKEY_HASH_SHA256] = _(SHA256),
- [PKEY_HASH_SHA384] = _(SHA384),
- [PKEY_HASH_SHA512] = _(SHA512),
- [PKEY_HASH_SHA224] = _(SHA224),
+ [HASH_ALGO_MD5] = _(MD5),
+ [HASH_ALGO_SHA1] = _(SHA1),
+ [HASH_ALGO_RIPE_MD_160] = _(RIPE_MD_160),
+ [HASH_ALGO_SHA256] = _(SHA256),
+ [HASH_ALGO_SHA384] = _(SHA384),
+ [HASH_ALGO_SHA512] = _(SHA512),
+ [HASH_ALGO_SHA224] = _(SHA224),
#undef _
};
diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
index 144201c..2989316 100644
--- a/crypto/asymmetric_keys/x509_cert_parser.c
+++ b/crypto/asymmetric_keys/x509_cert_parser.c
@@ -154,32 +154,32 @@ int x509_note_pkey_algo(void *context, size_t hdrlen,
return -ENOPKG; /* Unsupported combination */
case OID_md4WithRSAEncryption:
- ctx->cert->sig.pkey_hash_algo = PKEY_HASH_MD5;
+ ctx->cert->sig.pkey_hash_algo = HASH_ALGO_MD5;
ctx->cert->sig.pkey_algo = PKEY_ALGO_RSA;
break;
case OID_sha1WithRSAEncryption:
- ctx->cert->sig.pkey_hash_algo = PKEY_HASH_SHA1;
+ ctx->cert->sig.pkey_hash_algo = HASH_ALGO_SHA1;
ctx->cert->sig.pkey_algo = PKEY_ALGO_RSA;
break;
case OID_sha256WithRSAEncryption:
- ctx->cert->sig.pkey_hash_algo = PKEY_HASH_SHA256;
+ ctx->cert->sig.pkey_hash_algo = HASH_ALGO_SHA256;
ctx->cert->sig.pkey_algo = PKEY_ALGO_RSA;
break;
case OID_sha384WithRSAEncryption:
- ctx->cert->sig.pkey_hash_algo = PKEY_HASH_SHA384;
+ ctx->cert->sig.pkey_hash_algo = HASH_ALGO_SHA384;
ctx->cert->sig.pkey_algo = PKEY_ALGO_RSA;
break;
case OID_sha512WithRSAEncryption:
- ctx->cert->sig.pkey_hash_algo = PKEY_HASH_SHA512;
+ ctx->cert->sig.pkey_hash_algo = HASH_ALGO_SHA512;
ctx->cert->sig.pkey_algo = PKEY_ALGO_RSA;
break;
case OID_sha224WithRSAEncryption:
- ctx->cert->sig.pkey_hash_algo = PKEY_HASH_SHA224;
+ ctx->cert->sig.pkey_hash_algo = HASH_ALGO_SHA224;
ctx->cert->sig.pkey_algo = PKEY_ALGO_RSA;
break;
}
diff --git a/crypto/asymmetric_keys/x509_parser.h b/crypto/asymmetric_keys/x509_parser.h
index 87d9cc2..04c81bd 100644
--- a/crypto/asymmetric_keys/x509_parser.h
+++ b/crypto/asymmetric_keys/x509_parser.h
@@ -21,6 +21,8 @@ struct x509_certificate {
char *authority; /* Authority key fingerprint as hex */
struct tm valid_from;
struct tm valid_to;
+ enum pkey_algo pkey_algo : 8; /* Public key algorithm */
+ enum hash_algo sig_hash_algo : 8; /* Signature hash algorithm */
const void *tbs; /* Signed data */
unsigned tbs_size; /* Size of signed data */
unsigned raw_sig_size; /* Size of sigature */
diff --git a/crypto/asymmetric_keys/x509_public_key.c b/crypto/asymmetric_keys/x509_public_key.c
index 6abc27f..0a6bfad 100644
--- a/crypto/asymmetric_keys/x509_public_key.c
+++ b/crypto/asymmetric_keys/x509_public_key.c
@@ -96,7 +96,7 @@ int x509_get_sig_params(struct x509_certificate *cert)
/* Allocate the hashing algorithm we're going to need and find out how
* big the hash operational data will be.
*/
- tfm = crypto_alloc_shash(pkey_hash_algo_name[cert->sig.pkey_hash_algo], 0, 0);
+ tfm = crypto_alloc_shash(hash_algo_name[cert->sig.pkey_hash_algo], 0, 0);
if (IS_ERR(tfm))
return (PTR_ERR(tfm) == -ENOENT) ? -ENOPKG : PTR_ERR(tfm);
@@ -199,7 +199,7 @@ static int x509_key_preparse(struct key_preparsed_payload *prep)
cert->sig.pkey_hash_algo >= PKEY_HASH__LAST ||
!pkey_algo[cert->pub->pkey_algo] ||
!pkey_algo[cert->sig.pkey_algo] ||
- !pkey_hash_algo_name[cert->sig.pkey_hash_algo]) {
+ !hash_algo_name[cert->sig.pkey_hash_algo]) {
ret = -ENOPKG;
goto error_free_cert;
}
@@ -213,9 +213,8 @@ static int x509_key_preparse(struct key_preparsed_payload *prep)
cert->valid_to.tm_year + 1900, cert->valid_to.tm_mon + 1,
cert->valid_to.tm_mday, cert->valid_to.tm_hour,
cert->valid_to.tm_min, cert->valid_to.tm_sec);
- pr_devel("Cert Signature: %s + %s\n",
- pkey_algo_name[cert->sig.pkey_algo],
- pkey_hash_algo_name[cert->sig.pkey_hash_algo]);
+ pr_devel("Cert Signature: %s\n",
+ hash_algo_name[cert->sig.pkey_hash_algo]);
if (!cert->fingerprint) {
pr_warn("Cert for '%s' must have a SubjKeyId extension\n",
diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h
index b34fda4..fc09732 100644
--- a/include/crypto/public_key.h
+++ b/include/crypto/public_key.h
@@ -15,6 +15,7 @@
#define _LINUX_PUBLIC_KEY_H
#include <linux/mpi.h>
+#include <crypto/hash_info.h>
enum pkey_algo {
PKEY_ALGO_DSA,
@@ -25,19 +26,8 @@ enum pkey_algo {
extern const char *const pkey_algo_name[PKEY_ALGO__LAST];
extern const struct public_key_algorithm *pkey_algo[PKEY_ALGO__LAST];
-enum pkey_hash_algo {
- PKEY_HASH_MD4,
- PKEY_HASH_MD5,
- PKEY_HASH_SHA1,
- PKEY_HASH_RIPE_MD_160,
- PKEY_HASH_SHA256,
- PKEY_HASH_SHA384,
- PKEY_HASH_SHA512,
- PKEY_HASH_SHA224,
- PKEY_HASH__LAST
-};
-
-extern const char *const pkey_hash_algo_name[PKEY_HASH__LAST];
+/* asymmetric key implementation supports only up to SHA224 */
+#define PKEY_HASH__LAST (HASH_ALGO_SHA224 + 1)
enum pkey_id_type {
PKEY_ID_PGP, /* OpenPGP generated key ID */
@@ -91,7 +81,7 @@ struct public_key_signature {
u8 digest_size; /* Number of bytes in digest */
u8 nr_mpi; /* Occupancy of mpi[] */
enum pkey_algo pkey_algo : 8;
- enum pkey_hash_algo pkey_hash_algo : 8;
+ enum hash_algo pkey_hash_algo : 8;
union {
MPI mpi[2];
struct {
diff --git a/kernel/module_signing.c b/kernel/module_signing.c
index 0b6b870..be5b8fa 100644
--- a/kernel/module_signing.c
+++ b/kernel/module_signing.c
@@ -29,7 +29,7 @@
*/
struct module_signature {
u8 algo; /* Public-key crypto algorithm [enum pkey_algo] */
- u8 hash; /* Digest algorithm [enum pkey_hash_algo] */
+ u8 hash; /* Digest algorithm [enum hash_algo] */
u8 id_type; /* Key identifier type [enum pkey_id_type] */
u8 signer_len; /* Length of signer's name */
u8 key_id_len; /* Length of key identifier */
@@ -40,7 +40,7 @@ struct module_signature {
/*
* Digest the module contents.
*/
-static struct public_key_signature *mod_make_digest(enum pkey_hash_algo hash,
+static struct public_key_signature *mod_make_digest(enum hash_algo hash,
const void *mod,
unsigned long modlen)
{
@@ -55,7 +55,7 @@ static struct public_key_signature *mod_make_digest(enum pkey_hash_algo hash,
/* Allocate the hashing algorithm we're going to need and find out how
* big the hash operational data will be.
*/
- tfm = crypto_alloc_shash(pkey_hash_algo_name[hash], 0, 0);
+ tfm = crypto_alloc_shash(hash_algo_name[hash], 0, 0);
if (IS_ERR(tfm))
return (PTR_ERR(tfm) == -ENOENT) ? ERR_PTR(-ENOPKG) : ERR_CAST(tfm);
@@ -218,7 +218,7 @@ int mod_verify_sig(const void *mod, unsigned long *_modlen)
return -ENOPKG;
if (ms.hash >= PKEY_HASH__LAST ||
- !pkey_hash_algo_name[ms.hash])
+ !hash_algo_name[ms.hash])
return -ENOPKG;
key = request_asymmetric_key(sig, ms.signer_len,
--
1.8.1.4
--
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