2G ems initial

include/nettle/camellia.h

@@ -0,0 +1,143 @@
+/* camellia.h
+
+   Copyright (C) 2006,2007 NTT
+   (Nippon Telegraph and Telephone Corporation).
+
+   Copyright (C) 2010, 2013 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_CAMELLIA_H_INCLUDED
+#define NETTLE_CAMELLIA_H_INCLUDED
+
+#include "nettle-types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Name mangling */
+#define camellia128_set_encrypt_key nettle_camellia128_set_encrypt_key
+#define camellia128_set_decrypt_key nettle_camellia_set_decrypt_key
+#define camellia128_invert_key nettle_camellia128_invert_key
+#define camellia128_crypt nettle_camellia128_crypt
+
+#define camellia192_set_encrypt_key nettle_camellia192_set_encrypt_key
+#define camellia192_set_decrypt_key nettle_camellia192_set_decrypt_key
+
+#define camellia256_set_encrypt_key nettle_camellia256_set_encrypt_key
+#define camellia256_set_decrypt_key nettle_camellia256_set_decrypt_key
+#define camellia256_invert_key nettle_camellia256_invert_key
+#define camellia256_crypt nettle_camellia256_crypt
+
+
+#define CAMELLIA_BLOCK_SIZE 16
+/* Valid key sizes are 128, 192 or 256 bits (16, 24 or 32 bytes) */
+#define CAMELLIA128_KEY_SIZE 16
+#define CAMELLIA192_KEY_SIZE 24
+#define CAMELLIA256_KEY_SIZE 32
+
+/* For 128-bit keys, there are 18 regular rounds, pre- and
+   post-whitening, and two FL and FLINV rounds, using a total of 26
+   subkeys, each of 64 bit. For 192- and 256-bit keys, there are 6
+   additional regular rounds and one additional FL and FLINV, using a
+   total of 34 subkeys. */
+/* The clever combination of subkeys imply one of the pre- and
+   post-whitening keys is folded with the round keys, so that subkey
+   #1 and the last one (#25 or #33) is not used. The result is that we
+   have only 24 or 32 subkeys at the end of key setup. */
+
+#define _CAMELLIA128_NKEYS 24
+#define _CAMELLIA256_NKEYS 32
+
+struct camellia128_ctx
+{
+  uint64_t keys[_CAMELLIA128_NKEYS];
+};
+
+void
+camellia128_set_encrypt_key(struct camellia128_ctx *ctx,
+			    const uint8_t *key);
+
+void
+camellia128_set_decrypt_key(struct camellia128_ctx *ctx,
+			    const uint8_t *key);
+
+void
+camellia128_invert_key(struct camellia128_ctx *dst,
+		       const struct camellia128_ctx *src);
+
+void
+camellia128_crypt(const struct camellia128_ctx *ctx,
+		  size_t length, uint8_t *dst,
+		  const uint8_t *src);
+
+struct camellia256_ctx
+{
+  uint64_t keys[_CAMELLIA256_NKEYS];
+};
+
+void
+camellia256_set_encrypt_key(struct camellia256_ctx *ctx,
+			    const uint8_t *key);
+
+void
+camellia256_set_decrypt_key(struct camellia256_ctx *ctx,
+			    const uint8_t *key);
+
+void
+camellia256_invert_key(struct camellia256_ctx *dst,
+		       const struct camellia256_ctx *src);
+
+void
+camellia256_crypt(const struct camellia256_ctx *ctx,
+		  size_t length, uint8_t *dst,
+		  const uint8_t *src);
+
+/* camellia192 is the same as camellia256, except for the key
+   schedule. */
+/* Slightly ugly with a #define on a struct tag, since it might cause
+   surprises if also used as a name of a variable. */
+#define camellia192_ctx camellia256_ctx
+
+void
+camellia192_set_encrypt_key(struct camellia256_ctx *ctx,
+			    const uint8_t *key);
+
+void
+camellia192_set_decrypt_key(struct camellia256_ctx *ctx,
+			    const uint8_t *key);
+
+#define camellia192_invert_key camellia256_invert_key
+#define camellia192_crypt camellia256_crypt
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NETTLE_CAMELLIA_H_INCLUDED */