diff options
Diffstat (limited to 'src/libstrongswan/crypto/crypters/crypter.c')
| -rw-r--r-- | src/libstrongswan/crypto/crypters/crypter.c | 147 |
1 files changed, 131 insertions, 16 deletions
diff --git a/src/libstrongswan/crypto/crypters/crypter.c b/src/libstrongswan/crypto/crypters/crypter.c index 13ba9c6e2..ebd35a8a0 100644 --- a/src/libstrongswan/crypto/crypters/crypter.c +++ b/src/libstrongswan/crypto/crypters/crypter.c @@ -12,22 +12,20 @@ * 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. - * - * $Id: crypter.c 4880 2009-02-18 19:45:46Z tobias $ */ +#include <asn1/oid.h> + #include "crypter.h" -ENUM_BEGIN(encryption_algorithm_names, ENCR_UNDEFINED, ENCR_UNDEFINED, - "UNDEFINED"); -ENUM_NEXT(encryption_algorithm_names, ENCR_DES_IV64, ENCR_DES_IV32, ENCR_UNDEFINED, +ENUM_BEGIN(encryption_algorithm_names, ENCR_DES_IV64, ENCR_DES_IV32, "DES_IV64", - "DES", - "3DES", - "RC5", - "IDEA", - "CAST", - "BLOWFISH", + "DES_CBC", + "3DES_CBC", + "RC5_CBC", + "IDEA_CBC", + "CAST_CBC", + "BLOWFISH_CBC", "3IDEA", "DES_IV32"); ENUM_NEXT(encryption_algorithm_names, ENCR_NULL, ENCR_AES_CCM_ICV16, ENCR_DES_IV32, @@ -37,11 +35,128 @@ ENUM_NEXT(encryption_algorithm_names, ENCR_NULL, ENCR_AES_CCM_ICV16, ENCR_DES_IV "AES_CCM_8", "AES_CCM_12", "AES_CCM_16"); -ENUM_NEXT(encryption_algorithm_names, ENCR_AES_GCM_ICV8, ENCR_AES_GCM_ICV16, ENCR_AES_CCM_ICV16, +ENUM_NEXT(encryption_algorithm_names, ENCR_AES_GCM_ICV8, ENCR_NULL_AUTH_AES_GMAC, ENCR_AES_CCM_ICV16, "AES_GCM_8", "AES_GCM_12", - "AES_GCM_16"); -ENUM_NEXT(encryption_algorithm_names, ENCR_DES_ECB, ENCR_DES_ECB, ENCR_AES_GCM_ICV16, - "DES_ECB"); -ENUM_END(encryption_algorithm_names, ENCR_DES_ECB); + "AES_GCM_16", + "NULL_AES_GMAC"); +ENUM_NEXT(encryption_algorithm_names, ENCR_CAMELLIA_CBC, ENCR_CAMELLIA_CCM_ICV16, ENCR_NULL_AUTH_AES_GMAC, + "CAMELLIA_CBC", + "CAMELLIA_CTR", + "CAMELLIA_CCM_8", + "CAMELLIA_CCM_12", + "CAMELLIA_CCM_16"); +ENUM_NEXT(encryption_algorithm_names, ENCR_UNDEFINED, ENCR_TWOFISH_CBC, ENCR_CAMELLIA_CCM_ICV16, + "UNDEFINED", + "DES_ECB", + "SERPENT_CBC", + "TWOFISH_CBC"); +ENUM_END(encryption_algorithm_names, ENCR_TWOFISH_CBC); + +/* + * Described in header. + */ +encryption_algorithm_t encryption_algorithm_from_oid(int oid, size_t *key_size) +{ + encryption_algorithm_t alg; + size_t alg_key_size; + + switch (oid) + { + case OID_DES_CBC: + alg = ENCR_DES; + alg_key_size = 0; + break; + case OID_3DES_EDE_CBC: + alg = ENCR_3DES; + alg_key_size = 0; + break; + case OID_AES128_CBC: + alg = ENCR_AES_CBC; + alg_key_size = 128; + break; + case OID_AES192_CBC: + alg = ENCR_AES_CBC; + alg_key_size = 192; + break; + case OID_AES256_CBC: + alg = ENCR_AES_CBC; + alg_key_size = 256; + break; + case OID_CAMELLIA128_CBC: + alg = ENCR_CAMELLIA_CBC; + alg_key_size = 128; + break; + case OID_CAMELLIA192_CBC: + alg = ENCR_CAMELLIA_CBC; + alg_key_size = 192; + break; + case OID_CAMELLIA256_CBC: + alg = ENCR_CAMELLIA_CBC; + alg_key_size = 256; + break; + default: + alg = ENCR_UNDEFINED; + alg_key_size = 0; + } + if (key_size) + { + *key_size = alg_key_size; + } + return alg; +} + +/* + * Described in header. + */ +int encryption_algorithm_to_oid(encryption_algorithm_t alg, size_t key_size) +{ + int oid; + + switch(alg) + { + case ENCR_DES: + oid = OID_DES_CBC; + break; + case ENCR_3DES: + oid = OID_3DES_EDE_CBC; + break; + case ENCR_AES_CBC: + switch (key_size) + { + case 128: + oid = OID_AES128_CBC; + break; + case 192: + oid = OID_AES192_CBC; + break; + case 256: + oid = OID_AES256_CBC; + break; + default: + oid = OID_UNKNOWN; + } + break; + case ENCR_CAMELLIA_CBC: + switch (key_size) + { + case 128: + oid = OID_CAMELLIA128_CBC; + break; + case 192: + oid = OID_CAMELLIA192_CBC; + break; + case 256: + oid = OID_CAMELLIA256_CBC; + break; + default: + oid = OID_UNKNOWN; + } + break; + default: + oid = OID_UNKNOWN; + } + return oid; +} + |