feat: add gmssl headers

include/gmssl/des.h

@@ -0,0 +1,58 @@
+/*
+ *  Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the License); you may
+ *  not use this file except in compliance with the License.
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+/* FIPS PUB 46-3 "Data Encryption Standard (DES)" */
+
+#ifndef GMSSL_DES_H
+#define GMSSL_DES_H
+
+
+#include <stdint.h>
+#include <stdlib.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define DES_KEY_BITS	56
+#define DES_BLOCK_BITS	64
+#define DES_KEY_SIZE	((DES_KEY_BITS)/7)
+#define DES_BLOCK_SIZE	(DES_BLOCK_BITS/8)
+
+#define DES_RK_BITS	48
+#define DES_RK_SIZE	(DES_RK_BITS/8)
+#define DES_ROUNDS	16
+
+#define DES_EDE_KEY_SIZE	(DES_KEY_SIZE * 3)
+
+typedef struct {
+	uint64_t rk[DES_ROUNDS];
+} DES_KEY;
+
+void des_set_encrypt_key(DES_KEY *key, const uint8_t raw_key[DES_KEY_SIZE]);
+void des_set_decrypt_key(DES_KEY *key, const uint8_t raw_key[DES_KEY_SIZE]);
+void des_encrypt(DES_KEY *key, const uint8_t in[DES_BLOCK_SIZE], uint8_t out[DES_BLOCK_SIZE]);
+
+
+typedef struct {
+	DES_KEY K[3];
+} DES_EDE_KEY;
+
+void des_ede_set_encrypt_key(DES_EDE_KEY *key, const uint8_t raw_key[DES_EDE_KEY_SIZE]);
+void des_ede_set_decrypt_key(DES_EDE_KEY *key, const uint8_t raw_key[DES_EDE_KEY_SIZE]);
+void des_ede_encrypt(DES_EDE_KEY *key, const uint8_t in[DES_BLOCK_SIZE], uint8_t out[DES_BLOCK_SIZE]);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif