2G ems initial

2024-03-13 09:30:40 +08:00
commit eed6460ad2
1234 changed files with 419571 additions and 0 deletions
--- a/include/nettle/des.h
+++ b/include/nettle/des.h
@@ -0,0 +1,120 @@
+/* des.h
+
+   The des block cipher. And triple des.
+
+   Copyright (C) 1992 Dana L. How
+   Copyright (C) 2001 Niels Möller
+
+   This file is part of GNU Nettle.
+
+   GNU Nettle is free software: you can redistribute it and/or
+   modify it under the terms of either:
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
+
+   GNU Nettle is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see http://www.gnu.org/licenses/.
+*/
+
+/*
+ *	des - fast & portable DES encryption & decryption.
+ *	Copyright (C) 1992  Dana L. How
+ *	Please see the file `../lib/descore.README' for the complete copyright
+ *	notice.
+ *
+ * Slightly edited by Niels Möller, 1997
+ */
+
+#ifndef NETTLE_DES_H_INCLUDED
+#define NETTLE_DES_H_INCLUDED
+
+#include "nettle-types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Namespace mangling */
+#define des_set_key nettle_des_set_key
+#define des_encrypt nettle_des_encrypt
+#define des_decrypt nettle_des_decrypt
+#define des_check_parity nettle_des_check_parity
+#define des_fix_parity nettle_des_fix_parity
+#define des3_set_key nettle_des3_set_key
+#define des3_encrypt nettle_des3_encrypt
+#define des3_decrypt nettle_des3_decrypt
+
+#define DES_KEY_SIZE 8
+#define DES_BLOCK_SIZE 8
+
+/* Expanded key length */
+#define _DES_KEY_LENGTH 32
+
+struct des_ctx
+{
+  uint32_t key[_DES_KEY_LENGTH];
+};
+
+/* Returns 1 for good keys and 0 for weak keys. */
+int
+des_set_key(struct des_ctx *ctx, const uint8_t *key);
+
+void
+des_encrypt(const struct des_ctx *ctx,
+	    size_t length, uint8_t *dst,
+	    const uint8_t *src);
+void
+des_decrypt(const struct des_ctx *ctx,
+	    size_t length, uint8_t *dst,
+	    const uint8_t *src);
+
+int
+des_check_parity(size_t length, const uint8_t *key);
+
+void
+des_fix_parity(size_t length, uint8_t *dst,
+	       const uint8_t *src);
+
+#define DES3_KEY_SIZE 24
+#define DES3_BLOCK_SIZE DES_BLOCK_SIZE
+
+struct des3_ctx
+{
+  struct des_ctx des[3];
+};
+
+
+/* Returns 1 for good keys and 0 for weak keys. */
+int
+des3_set_key(struct des3_ctx *ctx, const uint8_t *key);
+
+void
+des3_encrypt(const struct des3_ctx *ctx,
+	     size_t length, uint8_t *dst,
+	     const uint8_t *src);
+void
+des3_decrypt(const struct des3_ctx *ctx,
+	     size_t length, uint8_t *dst,
+	     const uint8_t *src);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NETTLE_DES_H_INCLUDED */