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/* This file was automatically imported with
import_gcry.py. Please don't modify it */
#include <grub/dl.h>
GRUB_MOD_LICENSE ("GPLv3+");
/* camellia-glue.c - Glue for the Camellia cipher
* Copyright (C) 2007 Free Software Foundation, Inc.
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt 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 a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/* I put all the libgcrypt-specific stuff in this file to keep the
camellia.c/camellia.h files exactly as provided by NTT. If they
update their code, this should make it easier to bring the changes
in. - dshaw
There is one small change which needs to be done: Include the
following code at the top of camellia.h: */
#if 0
/* To use Camellia with libraries it is often useful to keep the name
* space of the library clean. The following macro is thus useful:
*
* #define CAMELLIA_EXT_SYM_PREFIX foo_
*
* This prefixes all external symbols with "foo_".
*/
#ifdef HAVE_CONFIG_H
#endif
#ifdef CAMELLIA_EXT_SYM_PREFIX
#define CAMELLIA_PREFIX1(x,y) x ## y
#define CAMELLIA_PREFIX2(x,y) CAMELLIA_PREFIX1(x,y)
#define CAMELLIA_PREFIX(x) CAMELLIA_PREFIX2(CAMELLIA_EXT_SYM_PREFIX,x)
#define Camellia_Ekeygen CAMELLIA_PREFIX(Camellia_Ekeygen)
#define Camellia_EncryptBlock CAMELLIA_PREFIX(Camellia_EncryptBlock)
#define Camellia_DecryptBlock CAMELLIA_PREFIX(Camellia_DecryptBlock)
#define camellia_decrypt128 CAMELLIA_PREFIX(camellia_decrypt128)
#define camellia_decrypt256 CAMELLIA_PREFIX(camellia_decrypt256)
#define camellia_encrypt128 CAMELLIA_PREFIX(camellia_encrypt128)
#define camellia_encrypt256 CAMELLIA_PREFIX(camellia_encrypt256)
#define camellia_setup128 CAMELLIA_PREFIX(camellia_setup128)
#define camellia_setup192 CAMELLIA_PREFIX(camellia_setup192)
#define camellia_setup256 CAMELLIA_PREFIX(camellia_setup256)
#endif /*CAMELLIA_EXT_SYM_PREFIX*/
#endif /* Code sample. */
#include "types.h"
#include "g10lib.h"
#include "cipher.h"
#include "camellia.h"
typedef struct
{
int keybitlength;
KEY_TABLE_TYPE keytable;
} CAMELLIA_context;
static gcry_err_code_t
camellia_setkey(void *c, const byte *key, unsigned keylen)
{
CAMELLIA_context *ctx=c;
static int initialized=0;
static const char *selftest_failed=NULL;
if(keylen!=16 && keylen!=24 && keylen!=32)
return GPG_ERR_INV_KEYLEN;
if(!initialized)
{
initialized=1;
selftest_failed=selftest();
if(selftest_failed)
log_error("%s\n",selftest_failed);
}
if(selftest_failed)
return GPG_ERR_SELFTEST_FAILED;
ctx->keybitlength=keylen*8;
Camellia_Ekeygen(ctx->keybitlength,key,ctx->keytable);
_gcry_burn_stack
((19+34+34)*sizeof(u32)+2*sizeof(void*) /* camellia_setup256 */
+(4+32)*sizeof(u32)+2*sizeof(void*) /* camellia_setup192 */
+0+sizeof(int)+2*sizeof(void*) /* Camellia_Ekeygen */
+3*2*sizeof(void*) /* Function calls. */
);
return 0;
}
static void
camellia_encrypt(void *c, byte *outbuf, const byte *inbuf)
{
CAMELLIA_context *ctx=c;
Camellia_EncryptBlock(ctx->keybitlength,inbuf,ctx->keytable,outbuf);
_gcry_burn_stack
(sizeof(int)+2*sizeof(unsigned char *)+sizeof(KEY_TABLE_TYPE)
+4*sizeof(u32)
+2*sizeof(u32*)+4*sizeof(u32)
+2*2*sizeof(void*) /* Function calls. */
);
}
static void
camellia_decrypt(void *c, byte *outbuf, const byte *inbuf)
{
CAMELLIA_context *ctx=c;
Camellia_DecryptBlock(ctx->keybitlength,inbuf,ctx->keytable,outbuf);
_gcry_burn_stack
(sizeof(int)+2*sizeof(unsigned char *)+sizeof(KEY_TABLE_TYPE)
+4*sizeof(u32)
+2*sizeof(u32*)+4*sizeof(u32)
+2*2*sizeof(void*) /* Function calls. */
);
}
/* These oids are from
<http://info.isl.ntt.co.jp/crypt/eng/camellia/specifications_oid.html>,
retrieved May 1, 2007. */
static gcry_cipher_oid_spec_t camellia128_oids[] =
{
{"1.2.392.200011.61.1.1.1.2", GCRY_CIPHER_MODE_CBC},
{"0.3.4401.5.3.1.9.1", GCRY_CIPHER_MODE_ECB},
{"0.3.4401.5.3.1.9.3", GCRY_CIPHER_MODE_OFB},
{"0.3.4401.5.3.1.9.4", GCRY_CIPHER_MODE_CFB},
{ NULL }
};
static gcry_cipher_oid_spec_t camellia192_oids[] =
{
{"1.2.392.200011.61.1.1.1.3", GCRY_CIPHER_MODE_CBC},
{"0.3.4401.5.3.1.9.21", GCRY_CIPHER_MODE_ECB},
{"0.3.4401.5.3.1.9.23", GCRY_CIPHER_MODE_OFB},
{"0.3.4401.5.3.1.9.24", GCRY_CIPHER_MODE_CFB},
{ NULL }
};
static gcry_cipher_oid_spec_t camellia256_oids[] =
{
{"1.2.392.200011.61.1.1.1.4", GCRY_CIPHER_MODE_CBC},
{"0.3.4401.5.3.1.9.41", GCRY_CIPHER_MODE_ECB},
{"0.3.4401.5.3.1.9.43", GCRY_CIPHER_MODE_OFB},
{"0.3.4401.5.3.1.9.44", GCRY_CIPHER_MODE_CFB},
{ NULL }
};
gcry_cipher_spec_t _gcry_cipher_spec_camellia128 =
{
"CAMELLIA128",NULL,camellia128_oids,CAMELLIA_BLOCK_SIZE,128,
sizeof(CAMELLIA_context),camellia_setkey,camellia_encrypt,camellia_decrypt
,
#ifdef GRUB_UTIL
.modname = "gcry_camellia",
#endif
};
gcry_cipher_spec_t _gcry_cipher_spec_camellia192 =
{
"CAMELLIA192",NULL,camellia192_oids,CAMELLIA_BLOCK_SIZE,192,
sizeof(CAMELLIA_context),camellia_setkey,camellia_encrypt,camellia_decrypt
,
#ifdef GRUB_UTIL
.modname = "gcry_camellia",
#endif
};
gcry_cipher_spec_t _gcry_cipher_spec_camellia256 =
{
"CAMELLIA256",NULL,camellia256_oids,CAMELLIA_BLOCK_SIZE,256,
sizeof(CAMELLIA_context),camellia_setkey,camellia_encrypt,camellia_decrypt
,
#ifdef GRUB_UTIL
.modname = "gcry_camellia",
#endif
};
GRUB_MOD_INIT(gcry_camellia)
{
grub_cipher_register (&_gcry_cipher_spec_camellia128);
grub_cipher_register (&_gcry_cipher_spec_camellia192);
grub_cipher_register (&_gcry_cipher_spec_camellia256);
}
GRUB_MOD_FINI(gcry_camellia)
{
grub_cipher_unregister (&_gcry_cipher_spec_camellia128);
grub_cipher_unregister (&_gcry_cipher_spec_camellia192);
grub_cipher_unregister (&_gcry_cipher_spec_camellia256);
}
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