diff options
Diffstat (limited to 'src/libstrongswan/crypto/hashers')
| -rw-r--r-- | src/libstrongswan/crypto/hashers/hasher.c | 79 | ||||
| -rw-r--r-- | src/libstrongswan/crypto/hashers/hasher.h | 44 |
2 files changed, 113 insertions, 10 deletions
diff --git a/src/libstrongswan/crypto/hashers/hasher.c b/src/libstrongswan/crypto/hashers/hasher.c index 7fa6346d6..14bfb022f 100644 --- a/src/libstrongswan/crypto/hashers/hasher.c +++ b/src/libstrongswan/crypto/hashers/hasher.c @@ -19,17 +19,21 @@ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. + * + * RCSID $Id: hasher.c 3304 2007-10-12 23:18:42Z andreas $ */ #include "hasher.h" +#include <asn1/oid.h> #include <crypto/hashers/sha1_hasher.h> #include <crypto/hashers/sha2_hasher.h> #include <crypto/hashers/md5_hasher.h> -ENUM(hash_algorithm_names, HASH_MD2, HASH_SHA512, +ENUM(hash_algorithm_names, HASH_UNKNOWN, HASH_SHA512, + "HASH_UNKNOWN", "HASH_MD2", "HASH_MD5", "HASH_SHA1", @@ -63,3 +67,76 @@ hasher_t *hasher_create(hash_algorithm_t hash_algorithm) return NULL; } } + +/* + * Described in header. + */ +hash_algorithm_t hasher_algorithm_from_oid(int oid) +{ + hash_algorithm_t algorithm; + + switch (oid) + { + case OID_MD2: + case OID_MD2_WITH_RSA: + algorithm = HASH_MD2; + break; + case OID_MD5: + case OID_MD5_WITH_RSA: + algorithm = HASH_MD5; + break; + case OID_SHA1: + case OID_SHA1_WITH_RSA: + algorithm = HASH_SHA1; + break; + case OID_SHA256: + case OID_SHA256_WITH_RSA: + algorithm = HASH_SHA256; + break; + case OID_SHA384: + case OID_SHA384_WITH_RSA: + algorithm = HASH_SHA384; + break; + case OID_SHA512: + case OID_SHA512_WITH_RSA: + algorithm = HASH_SHA512; + break; + default: + algorithm = HASH_UNKNOWN; + } + return algorithm; +} + +/* + * Described in header. + */ +int hasher_signature_algorithm_to_oid(hash_algorithm_t alg) +{ + int oid; + + switch (alg) + { + case HASH_MD2: + oid = OID_MD2_WITH_RSA; + break; + case HASH_MD5: + oid = OID_MD5_WITH_RSA; + break; + case HASH_SHA1: + oid = OID_SHA1_WITH_RSA; + break; + case HASH_SHA256: + oid = OID_SHA256_WITH_RSA; + break; + case HASH_SHA384: + oid = OID_SHA384_WITH_RSA; + break; + case HASH_SHA512: + oid = OID_SHA512_WITH_RSA; + break; + default: + oid = OID_UNKNOWN; + } + return oid; +} + diff --git a/src/libstrongswan/crypto/hashers/hasher.h b/src/libstrongswan/crypto/hashers/hasher.h index 6c17f892d..48b904576 100644 --- a/src/libstrongswan/crypto/hashers/hasher.h +++ b/src/libstrongswan/crypto/hashers/hasher.h @@ -19,6 +19,8 @@ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. + * + * RCSID $Id: hasher.h 3307 2007-10-17 02:56:24Z andreas $ */ #ifndef HASHER_H_ @@ -42,17 +44,18 @@ typedef struct hasher_t hasher_t; * @ingroup hashers */ enum hash_algorithm_t { - HASH_MD2 = 0, + HASH_UNKNOWN = 0, + HASH_MD2 = 1, /** Implemented in class md5_hasher_t */ - HASH_MD5 = 1, + HASH_MD5 = 2, /** Implemented in class sha1_hasher_t */ - HASH_SHA1 = 2, + HASH_SHA1 = 3, /** Implemented in class sha2_hasher_t */ - HASH_SHA256 = 3, + HASH_SHA256 = 4, /** Implemented in class sha2_hasher_t */ - HASH_SHA384 = 4, + HASH_SHA384 = 5, /** Implemented in class sha2_hasher_t */ - HASH_SHA512 = 5, + HASH_SHA512 = 6, }; #define HASH_SIZE_MD2 16 @@ -68,7 +71,6 @@ enum hash_algorithm_t { */ extern enum_name_t *hash_algorithm_names; - /** * @brief Generic interface for all hash functions. * @@ -82,7 +84,7 @@ struct hasher_t { * @brief Hash data and write it in the buffer. * * If the parameter hash is NULL, no result is written back - * an more data can be appended to already hashed data. + * and more data can be appended to already hashed data. * If not, the result is written back and the hasher is reset. * * The hash output parameter must hold at least @@ -98,7 +100,7 @@ struct hasher_t { * @brief Hash data and allocate space for the hash. * * If the parameter hash is NULL, no result is written back - * an more data can be appended to already hashed data. + * and more data can be appended to already hashed data. * If not, the result is written back and the hasher is reset. * * @param this calling object @@ -156,4 +158,28 @@ struct hasher_t { */ hasher_t *hasher_create(hash_algorithm_t hash_algorithm); +/** + * @brief Conversion of ASN.1 OID to hash algorithm. + * + * @param oid ASN.1 OID + * @return + * - hash algorithm + * - HASH_UNKNOWN if OID unsuported + * + * @ingroup hashers + */ +hash_algorithm_t hasher_algorithm_from_oid(int oid); + +/** + * @brief Conversion of hash signature algorithm ASN.1 OID. + * + * @param alg hash algorithm + * @return + * - ASN.1 OID if known hash algorithm + * - OID_UNKNOW + * + * @ingroup hashers + */ +int hasher_signature_algorithm_to_oid(hash_algorithm_t alg); + #endif /* HASHER_H_ */ |