Create speck.h

laiwei360735 · web-flow · commit 8f7bdcd4b0cf · 2017-03-20T17:15:36.000+08:00
a not good speck.h
diff --git a/demos/mycipher/speck.h b/demos/mycipher/speck.h
@@ -0,0 +1,48 @@
+#ifndef SPECK_H
+#define SPECK_H
+
+/*
+* define speck type to use 
+*(one of SPECK_32_64, SPECK_64_128, SPECK_128_256)
+*/
+#define SPECK_32_64
+
+#ifdef SPECK_32_64
+#define SPECK_TYPE uint16_t
+#define SPECK_ROUNDS 22
+#define SPECK_KEY_LEN 4
+#endif
+
+#ifdef SPECK_64_128
+#define SPECK_TYPE uint32_t
+#define SPECK_ROUNDS 27
+#define SPECK_KEY_LEN 4
+#endif
+
+#ifdef SPECK_128_256
+#define SPECK_TYPE uint64_t
+#define SPECK_ROUNDS 34
+#define SPECK_KEY_LEN 4
+#endif
+
+#define num_word sizeof(SPECK_TYPE)
+#include <sys/types.h>
+#include <stdint.h>
+#include <string.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+	typedef struct {
+		unsigned char rk[num_word];
+	} mycipher_key_t;
+
+	void mycipher_set_encrypt_key(mycipher_key_t *key, const unsigned char *user_key);
+	void speck_expand(SPECK_TYPE const K[SPECK_KEY_LEN], SPECK_TYPE S[SPECK_ROUNDS]);
+	void speck_encrypt(SPECK_TYPE const pt[2], SPECK_TYPE ct[2], SPECK_TYPE const K[SPECK_ROUNDS]);
+	void speck_decrypt(SPECK_TYPE const ct[2], SPECK_TYPE pt[2], SPECK_TYPE const K[SPECK_ROUNDS]);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
