transform: Add private transform for KDFs

src/libstrongswan/crypto/transform.c

@@ -16,6 +16,7 @@
 #include <crypto/transform.h>
 #include <crypto/hashers/hasher.h>
 #include <crypto/rngs/rng.h>
+#include <crypto/kdfs/kdf.h>
 
 ENUM_BEGIN(transform_type_names, ENCRYPTION_ALGORITHM, EXTENDED_SEQUENCE_NUMBERS,
 	"ENCRYPTION_ALGORITHM",
@@ -23,16 +24,16 @@ ENUM_BEGIN(transform_type_names, ENCRYPTION_ALGORITHM, EXTENDED_SEQUENCE_NUMBERS
 	"INTEGRITY_ALGORITHM",
 	"DIFFIE_HELLMAN_GROUP",
 	"EXTENDED_SEQUENCE_NUMBERS");
-ENUM_NEXT(transform_type_names, HASH_ALGORITHM, DETERMINISTIC_RANDOM_BIT_GENERATOR,
+ENUM_NEXT(transform_type_names, HASH_ALGORITHM, KEY_DERIVATION_FUNCTION,
 		  EXTENDED_SEQUENCE_NUMBERS,
 	"HASH_ALGORITHM",
 	"RANDOM_NUMBER_GENERATOR",
 	"AEAD_ALGORITHM",
 	"COMPRESSION_ALGORITHM",
 	"EXTENDED OUTPUT FUNCTION",
-	"DETERMINISTIC RANDOM BIT GENERATOR");
-ENUM_END(transform_type_names, DETERMINISTIC_RANDOM_BIT_GENERATOR);
-
+	"DETERMINISTIC RANDOM BIT GENERATOR",
+	"KEY_DERIVATION_FUNCTION");
+ENUM_END(transform_type_names, KEY_DERIVATION_FUNCTION);
 
 ENUM(extended_sequence_numbers_names, NO_EXT_SEQ_NUMBERS, EXT_SEQ_NUMBERS,
 	"NO_EXT_SEQ",
@@ -65,6 +66,8 @@ enum_name_t* transform_get_enum_names(transform_type_t type)
 			return ext_out_function_names;
 		case DETERMINISTIC_RANDOM_BIT_GENERATOR:
 			return drbg_type_names;
+		case KEY_DERIVATION_FUNCTION:
+			return key_derivation_function_names;
 		case COMPRESSION_ALGORITHM:
 			break;
 	}

src/libstrongswan/crypto/transform.h

@@ -40,6 +40,7 @@ enum transform_type_t {
 	COMPRESSION_ALGORITHM = 259,
 	EXTENDED_OUTPUT_FUNCTION = 260,
 	DETERMINISTIC_RANDOM_BIT_GENERATOR = 261,
+	KEY_DERIVATION_FUNCTION = 262,
 };
 
 /**