init commit of lib

kuznechik_128bit.h

@@ -0,0 +1,40 @@
+// kuznechik.h
+// 04-Jan-15  Markku-Juhani O. Saarinen <mjos@iki.fi>
+
+#ifndef KUZNECHIK_H
+#define KUZNECHIK_H
+
+#include <stdint.h>
+#include <stdio.h>
+
+// my 128-bit datatype
+typedef union {	
+    uint64_t q[2];
+    uint8_t  b[16];
+} w128_t;
+
+// cipher context
+typedef struct {
+	w128_t k[10];		// round keys
+} kuz_key_t;
+
+// init lookup tables
+void kuz_init(void);
+
+// key setup
+void kuz_set_encrypt_key(kuz_key_t *subkeys, const uint8_t key[32]);	
+void kuz_set_decrypt_key(kuz_key_t *subkeys, const uint8_t key[32]);	
+
+// single-block ecp ops
+void kuz_encrypt_block(kuz_key_t *subkeys, void *x);
+void kuz_decrypt_block(kuz_key_t *subkeys, void *x);
+
+// utils
+void print_w128(w128_t *x);
+
+// tests
+#ifdef TEST_FUNCTIONS_ENABLED
+void exec_kuznechik_test(void);
+#endif
+
+#endif