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/cfb.h
+++ b/include/nettle/cfb.h
@@ -0,0 +1,87 @@
+/* cfb.h
+
+   Cipher feedback mode.
+
+   Copyright (C) 2015, 2017 Dmitry Eremin-Solenikov
+   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/.
+*/
+
+#ifndef NETTLE_CFB_H_INCLUDED
+#define NETTLE_CFB_H_INCLUDED
+
+#include "nettle-types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Name mangling */
+#define cfb_encrypt nettle_cfb_encrypt
+#define cfb_decrypt nettle_cfb_decrypt
+
+void
+cfb_encrypt(const void *ctx, nettle_cipher_func *f,
+	    size_t block_size, uint8_t *iv,
+	    size_t length, uint8_t *dst,
+	    const uint8_t *src);
+
+void
+cfb_decrypt(const void *ctx, nettle_cipher_func *f,
+	    size_t block_size, uint8_t *iv,
+	    size_t length, uint8_t *dst,
+	    const uint8_t *src);
+
+#define CFB_CTX(type, size) \
+{ type ctx; uint8_t iv[size]; }
+
+#define CFB_SET_IV(ctx, data) \
+memcpy((ctx)->iv, (data), sizeof((ctx)->iv))
+
+/* NOTE: Avoid using NULL, as we don't include anything defining it. */
+#define CFB_ENCRYPT(self, f, length, dst, src)		\
+  (0 ? ((f)(&(self)->ctx, ~(size_t) 0,			\
+	    (uint8_t *) 0, (const uint8_t *) 0))	\
+   : cfb_encrypt((void *) &(self)->ctx,			\
+		 (nettle_cipher_func *) (f),		\
+		 sizeof((self)->iv), (self)->iv,	\
+		 (length), (dst), (src)))
+
+#define CFB_DECRYPT(self, f, length, dst, src)		\
+  (0 ? ((f)(&(self)->ctx, ~(size_t) 0,			\
+	    (uint8_t *) 0, (const uint8_t *) 0))	\
+   : cfb_decrypt((void *) &(self)->ctx,			\
+		 (nettle_cipher_func *) (f),		\
+		 sizeof((self)->iv), (self)->iv,	\
+		 (length), (dst), (src)))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NETTLE_CFB_H_INCLUDED */