SM2 KAP (Key Agreement Protocol), not tested

crypto/sms4/sms4_cfb.c

@@ -49,26 +49,12 @@
  *
  */
 
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include "sms4.h"
-
-#ifndef MODES_DEBUG
-# ifndef NDEBUG
-#  define NDEBUG
-# endif
-#endif
-#include <assert.h>
-
-/* The input and output encrypted as though 128bit cfb mode is being
- * used.  The extra state information to record how much of the
- * 128bit block we have used is contained in *num;
- */
-
+#include <openssl/sms4.h>
+#include <openssl/modes.h>
 
 void sms4_cfb128_encrypt(const unsigned char *in, unsigned char *out,
-                        size_t length, sms4_key_t *key,
-                        unsigned char *ivec, int *num, int encrypt) {
-        CRYPTO_cfb128_encrypt(in,out,length,key,ivec,num,encrypt,(block128_f)sms4_encrypt);
+	size_t len, const sms4_key_t *key, unsigned char *iv, int *num, int enc)
+{
+	CRYPTO_cfb128_encrypt(in, out, len, key, iv, num, enc, (block128_f)sms4_encrypt);
 }
+