From 206ce59a109f3b4bb352845bcd04f3cf504ae592 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 30 Aug 2013 16:15:18 +0100 Subject: [PATCH] KEYS: Move the algorithm pointer array from x509 to public_key.c Move the public-key algorithm pointer array from x509_public_key.c to public_key.c as it isn't X.509 specific. Note that to make this configure correctly, the public key part must be dependent on the RSA module rather than the other way round. This needs a further patch to make use of the crypto module loading stuff rather than using a fixed table. Signed-off-by: David Howells Reviewed-by: Kees Cook Reviewed-by: Josh Boyer --- crypto/asymmetric_keys/Kconfig | 2 +- crypto/asymmetric_keys/public_key.c | 8 ++++++++ crypto/asymmetric_keys/x509_public_key.c | 11 +---------- include/crypto/public_key.h | 1 + 4 files changed, 11 insertions(+), 11 deletions(-) diff --git a/crypto/asymmetric_keys/Kconfig b/crypto/asymmetric_keys/Kconfig index 6d2c2ea12559..862b01fe6172 100644 --- a/crypto/asymmetric_keys/Kconfig +++ b/crypto/asymmetric_keys/Kconfig @@ -12,6 +12,7 @@ if ASYMMETRIC_KEY_TYPE config ASYMMETRIC_PUBLIC_KEY_SUBTYPE tristate "Asymmetric public-key crypto algorithm subtype" select MPILIB + select PUBLIC_KEY_ALGO_RSA help This option provides support for asymmetric public key type handling. If signature generation and/or verification are to be used, @@ -20,7 +21,6 @@ config ASYMMETRIC_PUBLIC_KEY_SUBTYPE config PUBLIC_KEY_ALGO_RSA tristate "RSA public-key algorithm" - depends on ASYMMETRIC_PUBLIC_KEY_SUBTYPE select MPILIB_EXTRA help This option enables support for the RSA algorithm (PKCS#1, RFC3447). diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c index b313df1bd253..796ce0802aa0 100644 --- a/crypto/asymmetric_keys/public_key.c +++ b/crypto/asymmetric_keys/public_key.c @@ -28,6 +28,14 @@ const char *const pkey_algo_name[PKEY_ALGO__LAST] = { }; EXPORT_SYMBOL_GPL(pkey_algo_name); +const struct public_key_algorithm *pkey_algo[PKEY_ALGO__LAST] = { +#if defined(CONFIG_PUBLIC_KEY_ALGO_RSA) || \ + defined(CONFIG_PUBLIC_KEY_ALGO_RSA_MODULE) + [PKEY_ALGO_RSA] = &RSA_public_key_algorithm, +#endif +}; +EXPORT_SYMBOL_GPL(pkey_algo); + const char *const pkey_hash_algo_name[PKEY_HASH__LAST] = { [PKEY_HASH_MD4] = "md4", [PKEY_HASH_MD5] = "md5", diff --git a/crypto/asymmetric_keys/x509_public_key.c b/crypto/asymmetric_keys/x509_public_key.c index afbbc362f85a..fe38628adae9 100644 --- a/crypto/asymmetric_keys/x509_public_key.c +++ b/crypto/asymmetric_keys/x509_public_key.c @@ -23,15 +23,6 @@ #include "public_key.h" #include "x509_parser.h" -static const -struct public_key_algorithm *x509_public_key_algorithms[PKEY_ALGO__LAST] = { - [PKEY_ALGO_DSA] = NULL, -#if defined(CONFIG_PUBLIC_KEY_ALGO_RSA) || \ - defined(CONFIG_PUBLIC_KEY_ALGO_RSA_MODULE) - [PKEY_ALGO_RSA] = &RSA_public_key_algorithm, -#endif -}; - /* * Check the signature on a certificate using the provided public key */ @@ -174,7 +165,7 @@ static int x509_key_preparse(struct key_preparsed_payload *prep) goto error_free_cert; } - cert->pub->algo = x509_public_key_algorithms[cert->pkey_algo]; + cert->pub->algo = pkey_algo[cert->pkey_algo]; cert->pub->id_type = PKEY_ID_X509; /* Check the signature on the key */ diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h index 619d5706d837..46bde250bfae 100644 --- a/include/crypto/public_key.h +++ b/include/crypto/public_key.h @@ -23,6 +23,7 @@ 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,