add zeromem engine

anti memory leakage attack

engines/zeromem/ec2m_kern.h

@@ -0,0 +1,36 @@
+#ifndef _EC2M_KERN_H_
+#define _EC2M_KERN_H_
+
+#define NETLINK_ECC 31
+#define MAX_PAYLOAD 1024
+
+#define REQ_IMPORT_KEY 1
+#define REQ_PRIVATE_OP 2
+
+#define OK 0
+#define FAIL -1
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <stdint.h>
+#endif
+#include "ec.h"
+
+struct ec2m_request_st {
+	int func;
+	int len;
+};
+
+struct ec2m_response_st
+{
+	int result;
+};
+
+extern int ec2m_kern_init(void);
+extern void ec2m_kern_clean(void);
+
+extern int ec2m_import_key(mm_256 *key);
+extern int ec2m_private_operation(mm256_point_t*p, mm256_point_t*q);
+
+#endif