SM2 KAP (Key Agreement Protocol), not tested

crypto/sms4/sms4_ecb.c

@@ -50,18 +50,14 @@
  */
 
 
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include "sms4.h"
-#include <assert.h>
+#include <openssl/sms4.h>
+#include <openssl/modes.h>
 
-void sms4_ecb_encrypt(const unsigned char *in, unsigned char *out, sms4_key_t *key, int encrypt) {
-        assert(in && out && key);
-        if(encrypt)
-                sms4_encrypt(in, out, key);
-        else
-                sms4_decrypt(in, out, key);
+void sms4_ecb_encrypt(const unsigned char *in, unsigned char *out,
+	const sms4_key_t *key, int enc)
+{
+	if (enc)
+		sms4_encrypt(in, out, key);
+	else	sms4_decrypt(in, out, key);
 }
 
-//sms4_decrypt = sms4_encrypt, but the key is in reverse order