diff options
Diffstat (limited to 'grub-core/lib/libgcrypt-grub/cipher/camellia-glue.c')
| -rw-r--r-- | grub-core/lib/libgcrypt-grub/cipher/camellia-glue.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/grub-core/lib/libgcrypt-grub/cipher/camellia-glue.c b/grub-core/lib/libgcrypt-grub/cipher/camellia-glue.c new file mode 100644 index 0000000..f1a9143 --- /dev/null +++ b/grub-core/lib/libgcrypt-grub/cipher/camellia-glue.c @@ -0,0 +1,211 @@ +/* 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); +} |