--- a/bignum.c	Sat Mar 12 16:21:13 2016 +0800
+++ b/bignum.c	Tue Mar 15 21:41:22 2016 +0800
@@ -39,33 +39,33 @@
  * on error */
 void m_mp_init_multi(mp_int *mp, ...) 
 {
-    mp_int* cur_arg = mp;
-    va_list args;
+	mp_int* cur_arg = mp;
+	va_list args;
 
-    va_start(args, mp);        /* init args to next argument from caller */
-    while (cur_arg != NULL) {
-        if (mp_init(cur_arg) != MP_OKAY) {
+	va_start(args, mp);        /* init args to next argument from caller */
+	while (cur_arg != NULL) {
+		if (mp_init(cur_arg) != MP_OKAY) {
 			dropbear_exit("Mem alloc error");
-        }
-        cur_arg = va_arg(args, mp_int*);
-    }
-    va_end(args);
+		}
+		cur_arg = va_arg(args, mp_int*);
+	}
+	va_end(args);
 }
 
 void m_mp_alloc_init_multi(mp_int **mp, ...) 
 {
-    mp_int** cur_arg = mp;
-    va_list args;
+	mp_int** cur_arg = mp;
+	va_list args;
 
-    va_start(args, mp);        /* init args to next argument from caller */
-    while (cur_arg != NULL) {
-    	*cur_arg = m_malloc(sizeof(mp_int));
-        if (mp_init(*cur_arg) != MP_OKAY) {
+	va_start(args, mp);        /* init args to next argument from caller */
+	while (cur_arg != NULL) {
+		*cur_arg = m_malloc(sizeof(mp_int));
+		if (mp_init(*cur_arg) != MP_OKAY) {
 			dropbear_exit("Mem alloc error");
-        }
-        cur_arg = va_arg(args, mp_int**);
-    }
-    va_end(args);
+		}
+		cur_arg = va_arg(args, mp_int**);
+	}
+	va_end(args);
 }
 
 void bytes_to_mp(mp_int *mp, const unsigned char* bytes, unsigned int len) {