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-rw-r--r--grub-core/lib/libgcrypt-grub/cipher/rijndael.c767
1 files changed, 767 insertions, 0 deletions
diff --git a/grub-core/lib/libgcrypt-grub/cipher/rijndael.c b/grub-core/lib/libgcrypt-grub/cipher/rijndael.c
new file mode 100644
index 0000000..557b3be
--- /dev/null
+++ b/grub-core/lib/libgcrypt-grub/cipher/rijndael.c
@@ -0,0 +1,767 @@
+/* This file was automatically imported with
+ import_gcry.py. Please don't modify it */
+#include <grub/dl.h>
+GRUB_MOD_LICENSE ("GPLv3+");
+/* Rijndael (AES) for GnuPG
+ * Copyright (C) 2000, 2001, 2002, 2003, 2007,
+ * 2008 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 Lesser 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, see <http://www.gnu.org/licenses/>.
+ *******************************************************************
+ * The code here is based on the optimized implementation taken from
+ * http://www.esat.kuleuven.ac.be/~rijmen/rijndael/ on Oct 2, 2000,
+ * which carries this notice:
+ *------------------------------------------
+ * rijndael-alg-fst.c v2.3 April '2000
+ *
+ * Optimised ANSI C code
+ *
+ * authors: v1.0: Antoon Bosselaers
+ * v2.0: Vincent Rijmen
+ * v2.3: Paulo Barreto
+ *
+ * This code is placed in the public domain.
+ *------------------------------------------
+ *
+ * The SP800-38a document is available at:
+ * http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
+ *
+ */
+
+
+#include "types.h" /* for byte and u32 typedefs */
+#include "g10lib.h"
+#include "cipher.h"
+
+#define MAXKC (256/32)
+#define MAXROUNDS 14
+#define BLOCKSIZE (128/8)
+
+
+/* USE_PADLOCK indicates whether to compile the padlock specific
+ code. */
+#undef USE_PADLOCK
+#ifdef ENABLE_PADLOCK_SUPPORT
+# if defined (__i386__) && SIZEOF_UNSIGNED_LONG == 4 && defined (__GNUC__)
+# define USE_PADLOCK
+# endif
+#endif /*ENABLE_PADLOCK_SUPPORT*/
+
+
+typedef struct
+{
+ int ROUNDS; /* Key-length-dependent number of rounds. */
+ int decryption_prepared; /* The decryption key schedule is available. */
+#ifdef USE_PADLOCK
+ int use_padlock; /* Padlock shall be used. */
+ /* The key as passed to the padlock engine. */
+ unsigned char padlock_key[16] __attribute__ ((aligned (16)));
+#endif
+ union
+ {
+ PROPERLY_ALIGNED_TYPE dummy;
+ byte keyschedule[MAXROUNDS+1][4][4];
+ } u1;
+ union
+ {
+ PROPERLY_ALIGNED_TYPE dummy;
+ byte keyschedule[MAXROUNDS+1][4][4];
+ } u2;
+} RIJNDAEL_context;
+
+#define keySched u1.keyschedule
+#define keySched2 u2.keyschedule
+
+/* All the numbers. */
+#include "rijndael-tables.h"
+
+
+/* Perform the key setup. */
+static gcry_err_code_t
+do_setkey (RIJNDAEL_context *ctx, const byte *key, const unsigned keylen)
+{
+ static int initialized = 0;
+ static const char *selftest_failed=0;
+ int ROUNDS;
+ int i,j, r, t, rconpointer = 0;
+ int KC;
+ union
+ {
+ PROPERLY_ALIGNED_TYPE dummy;
+ byte k[MAXKC][4];
+ } k;
+#define k k.k
+ union
+ {
+ PROPERLY_ALIGNED_TYPE dummy;
+ byte tk[MAXKC][4];
+ } tk;
+#define tk tk.tk
+
+ /* The on-the-fly self tests are only run in non-fips mode. In fips
+ mode explicit self-tests are required. Actually the on-the-fly
+ self-tests are not fully thread-safe and it might happen that a
+ failed self-test won't get noticed in another thread.
+
+ FIXME: We might want to have a central registry of succeeded
+ self-tests. */
+ if (!fips_mode () && !initialized)
+ {
+ initialized = 1;
+ selftest_failed = selftest ();
+ if (selftest_failed)
+ log_error ("%s\n", selftest_failed );
+ }
+ if (selftest_failed)
+ return GPG_ERR_SELFTEST_FAILED;
+
+ ctx->decryption_prepared = 0;
+#ifdef USE_PADLOCK
+ ctx->use_padlock = 0;
+#endif
+
+ if( keylen == 128/8 )
+ {
+ ROUNDS = 10;
+ KC = 4;
+#ifdef USE_PADLOCK
+ if ((_gcry_get_hw_features () & HWF_PADLOCK_AES))
+ {
+ ctx->use_padlock = 1;
+ memcpy (ctx->padlock_key, key, keylen);
+ }
+#endif
+ }
+ else if ( keylen == 192/8 )
+ {
+ ROUNDS = 12;
+ KC = 6;
+ }
+ else if ( keylen == 256/8 )
+ {
+ ROUNDS = 14;
+ KC = 8;
+ }
+ else
+ return GPG_ERR_INV_KEYLEN;
+
+ ctx->ROUNDS = ROUNDS;
+
+#ifdef USE_PADLOCK
+ if (ctx->use_padlock)
+ {
+ /* Nothing to do as we support only hardware key generation for
+ now. */
+ }
+ else
+#endif /*USE_PADLOCK*/
+ {
+#define W (ctx->keySched)
+ for (i = 0; i < keylen; i++)
+ {
+ k[i >> 2][i & 3] = key[i];
+ }
+
+ for (j = KC-1; j >= 0; j--)
+ {
+ *((u32*)tk[j]) = *((u32*)k[j]);
+ }
+ r = 0;
+ t = 0;
+ /* Copy values into round key array. */
+ for (j = 0; (j < KC) && (r < ROUNDS + 1); )
+ {
+ for (; (j < KC) && (t < 4); j++, t++)
+ {
+ *((u32*)W[r][t]) = *((u32*)tk[j]);
+ }
+ if (t == 4)
+ {
+ r++;
+ t = 0;
+ }
+ }
+
+ while (r < ROUNDS + 1)
+ {
+ /* While not enough round key material calculated calculate
+ new values. */
+ tk[0][0] ^= S[tk[KC-1][1]];
+ tk[0][1] ^= S[tk[KC-1][2]];
+ tk[0][2] ^= S[tk[KC-1][3]];
+ tk[0][3] ^= S[tk[KC-1][0]];
+ tk[0][0] ^= rcon[rconpointer++];
+
+ if (KC != 8)
+ {
+ for (j = 1; j < KC; j++)
+ {
+ *((u32*)tk[j]) ^= *((u32*)tk[j-1]);
+ }
+ }
+ else
+ {
+ for (j = 1; j < KC/2; j++)
+ {
+ *((u32*)tk[j]) ^= *((u32*)tk[j-1]);
+ }
+ tk[KC/2][0] ^= S[tk[KC/2 - 1][0]];
+ tk[KC/2][1] ^= S[tk[KC/2 - 1][1]];
+ tk[KC/2][2] ^= S[tk[KC/2 - 1][2]];
+ tk[KC/2][3] ^= S[tk[KC/2 - 1][3]];
+ for (j = KC/2 + 1; j < KC; j++)
+ {
+ *((u32*)tk[j]) ^= *((u32*)tk[j-1]);
+ }
+ }
+
+ /* Copy values into round key array. */
+ for (j = 0; (j < KC) && (r < ROUNDS + 1); )
+ {
+ for (; (j < KC) && (t < 4); j++, t++)
+ {
+ *((u32*)W[r][t]) = *((u32*)tk[j]);
+ }
+ if (t == 4)
+ {
+ r++;
+ t = 0;
+ }
+ }
+ }
+#undef W
+ }
+
+ return 0;
+#undef tk
+#undef k
+}
+
+
+static gcry_err_code_t
+rijndael_setkey (void *context, const byte *key, const unsigned keylen)
+{
+ RIJNDAEL_context *ctx = context;
+
+ int rc = do_setkey (ctx, key, keylen);
+ _gcry_burn_stack ( 100 + 16*sizeof(int));
+ return rc;
+}
+
+
+/* Make a decryption key from an encryption key. */
+static void
+prepare_decryption( RIJNDAEL_context *ctx )
+{
+ int r;
+ union
+ {
+ PROPERLY_ALIGNED_TYPE dummy;
+ byte *w;
+ } w;
+#define w w.w
+
+ for (r=0; r < MAXROUNDS+1; r++ )
+ {
+ *((u32*)ctx->keySched2[r][0]) = *((u32*)ctx->keySched[r][0]);
+ *((u32*)ctx->keySched2[r][1]) = *((u32*)ctx->keySched[r][1]);
+ *((u32*)ctx->keySched2[r][2]) = *((u32*)ctx->keySched[r][2]);
+ *((u32*)ctx->keySched2[r][3]) = *((u32*)ctx->keySched[r][3]);
+ }
+#define W (ctx->keySched2)
+ for (r = 1; r < ctx->ROUNDS; r++)
+ {
+ w = W[r][0];
+ *((u32*)w) = *((u32*)U1[w[0]]) ^ *((u32*)U2[w[1]])
+ ^ *((u32*)U3[w[2]]) ^ *((u32*)U4[w[3]]);
+
+ w = W[r][1];
+ *((u32*)w) = *((u32*)U1[w[0]]) ^ *((u32*)U2[w[1]])
+ ^ *((u32*)U3[w[2]]) ^ *((u32*)U4[w[3]]);
+
+ w = W[r][2];
+ *((u32*)w) = *((u32*)U1[w[0]]) ^ *((u32*)U2[w[1]])
+ ^ *((u32*)U3[w[2]]) ^ *((u32*)U4[w[3]]);
+
+ w = W[r][3];
+ *((u32*)w) = *((u32*)U1[w[0]]) ^ *((u32*)U2[w[1]])
+ ^ *((u32*)U3[w[2]]) ^ *((u32*)U4[w[3]]);
+ }
+#undef W
+#undef w
+}
+
+
+
+/* Encrypt one block. A and B need to be aligned on a 4 byte
+ boundary. A and B may be the same. */
+static void
+do_encrypt_aligned (const RIJNDAEL_context *ctx,
+ unsigned char *b, const unsigned char *a)
+{
+#define rk (ctx->keySched)
+ int ROUNDS = ctx->ROUNDS;
+ int r;
+ union
+ {
+ u32 tempu32[4]; /* Force correct alignment. */
+ byte temp[4][4];
+ } u;
+
+ *((u32*)u.temp[0]) = *((u32*)(a )) ^ *((u32*)rk[0][0]);
+ *((u32*)u.temp[1]) = *((u32*)(a+ 4)) ^ *((u32*)rk[0][1]);
+ *((u32*)u.temp[2]) = *((u32*)(a+ 8)) ^ *((u32*)rk[0][2]);
+ *((u32*)u.temp[3]) = *((u32*)(a+12)) ^ *((u32*)rk[0][3]);
+ *((u32*)(b )) = (*((u32*)T1[u.temp[0][0]])
+ ^ *((u32*)T2[u.temp[1][1]])
+ ^ *((u32*)T3[u.temp[2][2]])
+ ^ *((u32*)T4[u.temp[3][3]]));
+ *((u32*)(b + 4)) = (*((u32*)T1[u.temp[1][0]])
+ ^ *((u32*)T2[u.temp[2][1]])
+ ^ *((u32*)T3[u.temp[3][2]])
+ ^ *((u32*)T4[u.temp[0][3]]));
+ *((u32*)(b + 8)) = (*((u32*)T1[u.temp[2][0]])
+ ^ *((u32*)T2[u.temp[3][1]])
+ ^ *((u32*)T3[u.temp[0][2]])
+ ^ *((u32*)T4[u.temp[1][3]]));
+ *((u32*)(b +12)) = (*((u32*)T1[u.temp[3][0]])
+ ^ *((u32*)T2[u.temp[0][1]])
+ ^ *((u32*)T3[u.temp[1][2]])
+ ^ *((u32*)T4[u.temp[2][3]]));
+
+ for (r = 1; r < ROUNDS-1; r++)
+ {
+ *((u32*)u.temp[0]) = *((u32*)(b )) ^ *((u32*)rk[r][0]);
+ *((u32*)u.temp[1]) = *((u32*)(b+ 4)) ^ *((u32*)rk[r][1]);
+ *((u32*)u.temp[2]) = *((u32*)(b+ 8)) ^ *((u32*)rk[r][2]);
+ *((u32*)u.temp[3]) = *((u32*)(b+12)) ^ *((u32*)rk[r][3]);
+
+ *((u32*)(b )) = (*((u32*)T1[u.temp[0][0]])
+ ^ *((u32*)T2[u.temp[1][1]])
+ ^ *((u32*)T3[u.temp[2][2]])
+ ^ *((u32*)T4[u.temp[3][3]]));
+ *((u32*)(b + 4)) = (*((u32*)T1[u.temp[1][0]])
+ ^ *((u32*)T2[u.temp[2][1]])
+ ^ *((u32*)T3[u.temp[3][2]])
+ ^ *((u32*)T4[u.temp[0][3]]));
+ *((u32*)(b + 8)) = (*((u32*)T1[u.temp[2][0]])
+ ^ *((u32*)T2[u.temp[3][1]])
+ ^ *((u32*)T3[u.temp[0][2]])
+ ^ *((u32*)T4[u.temp[1][3]]));
+ *((u32*)(b +12)) = (*((u32*)T1[u.temp[3][0]])
+ ^ *((u32*)T2[u.temp[0][1]])
+ ^ *((u32*)T3[u.temp[1][2]])
+ ^ *((u32*)T4[u.temp[2][3]]));
+ }
+
+ /* Last round is special. */
+ *((u32*)u.temp[0]) = *((u32*)(b )) ^ *((u32*)rk[ROUNDS-1][0]);
+ *((u32*)u.temp[1]) = *((u32*)(b+ 4)) ^ *((u32*)rk[ROUNDS-1][1]);
+ *((u32*)u.temp[2]) = *((u32*)(b+ 8)) ^ *((u32*)rk[ROUNDS-1][2]);
+ *((u32*)u.temp[3]) = *((u32*)(b+12)) ^ *((u32*)rk[ROUNDS-1][3]);
+ b[ 0] = T1[u.temp[0][0]][1];
+ b[ 1] = T1[u.temp[1][1]][1];
+ b[ 2] = T1[u.temp[2][2]][1];
+ b[ 3] = T1[u.temp[3][3]][1];
+ b[ 4] = T1[u.temp[1][0]][1];
+ b[ 5] = T1[u.temp[2][1]][1];
+ b[ 6] = T1[u.temp[3][2]][1];
+ b[ 7] = T1[u.temp[0][3]][1];
+ b[ 8] = T1[u.temp[2][0]][1];
+ b[ 9] = T1[u.temp[3][1]][1];
+ b[10] = T1[u.temp[0][2]][1];
+ b[11] = T1[u.temp[1][3]][1];
+ b[12] = T1[u.temp[3][0]][1];
+ b[13] = T1[u.temp[0][1]][1];
+ b[14] = T1[u.temp[1][2]][1];
+ b[15] = T1[u.temp[2][3]][1];
+ *((u32*)(b )) ^= *((u32*)rk[ROUNDS][0]);
+ *((u32*)(b+ 4)) ^= *((u32*)rk[ROUNDS][1]);
+ *((u32*)(b+ 8)) ^= *((u32*)rk[ROUNDS][2]);
+ *((u32*)(b+12)) ^= *((u32*)rk[ROUNDS][3]);
+#undef rk
+}
+
+
+static void
+do_encrypt (const RIJNDAEL_context *ctx,
+ unsigned char *bx, const unsigned char *ax)
+{
+ /* BX and AX are not necessary correctly aligned. Thus we need to
+ copy them here. */
+ union
+ {
+ u32 dummy[4];
+ byte a[16];
+ } a;
+ union
+ {
+ u32 dummy[4];
+ byte b[16];
+ } b;
+
+ memcpy (a.a, ax, 16);
+ do_encrypt_aligned (ctx, b.b, a.a);
+ memcpy (bx, b.b, 16);
+}
+
+
+/* Encrypt or decrypt one block using the padlock engine. A and B may
+ be the same. */
+#ifdef USE_PADLOCK
+static void
+do_padlock (const RIJNDAEL_context *ctx, int decrypt_flag,
+ unsigned char *bx, const unsigned char *ax)
+{
+ /* BX and AX are not necessary correctly aligned. Thus we need to
+ copy them here. */
+ unsigned char a[16] __attribute__ ((aligned (16)));
+ unsigned char b[16] __attribute__ ((aligned (16)));
+ unsigned int cword[4] __attribute__ ((aligned (16)));
+
+ /* The control word fields are:
+ 127:12 11:10 9 8 7 6 5 4 3:0
+ RESERVED KSIZE CRYPT INTER KEYGN CIPHR ALIGN DGEST ROUND */
+ cword[0] = (ctx->ROUNDS & 15); /* (The mask is just a safeguard.) */
+ cword[1] = 0;
+ cword[2] = 0;
+ cword[3] = 0;
+ if (decrypt_flag)
+ cword[0] |= 0x00000200;
+
+ memcpy (a, ax, 16);
+
+ asm volatile
+ ("pushfl\n\t" /* Force key reload. */
+ "popfl\n\t"
+ "xchg %3, %%ebx\n\t" /* Load key. */
+ "movl $1, %%ecx\n\t" /* Init counter for just one block. */
+ ".byte 0xf3, 0x0f, 0xa7, 0xc8\n\t" /* REP XSTORE ECB. */
+ "xchg %3, %%ebx\n" /* Restore GOT register. */
+ : /* No output */
+ : "S" (a), "D" (b), "d" (cword), "r" (ctx->padlock_key)
+ : "%ecx", "cc", "memory"
+ );
+
+ memcpy (bx, b, 16);
+
+}
+#endif /*USE_PADLOCK*/
+
+
+static void
+rijndael_encrypt (void *context, byte *b, const byte *a)
+{
+ RIJNDAEL_context *ctx = context;
+
+#ifdef USE_PADLOCK
+ if (ctx->use_padlock)
+ {
+ do_padlock (ctx, 0, b, a);
+ _gcry_burn_stack (48 + 15 /* possible padding for alignment */);
+ }
+ else
+#endif /*USE_PADLOCK*/
+ {
+ do_encrypt (ctx, b, a);
+ _gcry_burn_stack (48 + 2*sizeof(int));
+ }
+}
+
+
+/* Bulk encryption of complete blocks in CFB mode. Caller needs to
+ make sure that IV is aligned on an unsigned long boundary. This
+ function is only intended for the bulk encryption feature of
+ cipher.c. */
+
+
+/* Bulk encryption of complete blocks in CBC mode. Caller needs to
+ make sure that IV is aligned on an unsigned long boundary. This
+ function is only intended for the bulk encryption feature of
+ cipher.c. */
+
+
+
+/* Decrypt one block. A and B need to be aligned on a 4 byte boundary
+ and the decryption must have been prepared. A and B may be the
+ same. */
+static void
+do_decrypt_aligned (RIJNDAEL_context *ctx,
+ unsigned char *b, const unsigned char *a)
+{
+#define rk (ctx->keySched2)
+ int ROUNDS = ctx->ROUNDS;
+ int r;
+ union
+ {
+ u32 tempu32[4]; /* Force correct alignment. */
+ byte temp[4][4];
+ } u;
+
+
+ *((u32*)u.temp[0]) = *((u32*)(a )) ^ *((u32*)rk[ROUNDS][0]);
+ *((u32*)u.temp[1]) = *((u32*)(a+ 4)) ^ *((u32*)rk[ROUNDS][1]);
+ *((u32*)u.temp[2]) = *((u32*)(a+ 8)) ^ *((u32*)rk[ROUNDS][2]);
+ *((u32*)u.temp[3]) = *((u32*)(a+12)) ^ *((u32*)rk[ROUNDS][3]);
+
+ *((u32*)(b )) = (*((u32*)T5[u.temp[0][0]])
+ ^ *((u32*)T6[u.temp[3][1]])
+ ^ *((u32*)T7[u.temp[2][2]])
+ ^ *((u32*)T8[u.temp[1][3]]));
+ *((u32*)(b+ 4)) = (*((u32*)T5[u.temp[1][0]])
+ ^ *((u32*)T6[u.temp[0][1]])
+ ^ *((u32*)T7[u.temp[3][2]])
+ ^ *((u32*)T8[u.temp[2][3]]));
+ *((u32*)(b+ 8)) = (*((u32*)T5[u.temp[2][0]])
+ ^ *((u32*)T6[u.temp[1][1]])
+ ^ *((u32*)T7[u.temp[0][2]])
+ ^ *((u32*)T8[u.temp[3][3]]));
+ *((u32*)(b+12)) = (*((u32*)T5[u.temp[3][0]])
+ ^ *((u32*)T6[u.temp[2][1]])
+ ^ *((u32*)T7[u.temp[1][2]])
+ ^ *((u32*)T8[u.temp[0][3]]));
+
+ for (r = ROUNDS-1; r > 1; r--)
+ {
+ *((u32*)u.temp[0]) = *((u32*)(b )) ^ *((u32*)rk[r][0]);
+ *((u32*)u.temp[1]) = *((u32*)(b+ 4)) ^ *((u32*)rk[r][1]);
+ *((u32*)u.temp[2]) = *((u32*)(b+ 8)) ^ *((u32*)rk[r][2]);
+ *((u32*)u.temp[3]) = *((u32*)(b+12)) ^ *((u32*)rk[r][3]);
+ *((u32*)(b )) = (*((u32*)T5[u.temp[0][0]])
+ ^ *((u32*)T6[u.temp[3][1]])
+ ^ *((u32*)T7[u.temp[2][2]])
+ ^ *((u32*)T8[u.temp[1][3]]));
+ *((u32*)(b+ 4)) = (*((u32*)T5[u.temp[1][0]])
+ ^ *((u32*)T6[u.temp[0][1]])
+ ^ *((u32*)T7[u.temp[3][2]])
+ ^ *((u32*)T8[u.temp[2][3]]));
+ *((u32*)(b+ 8)) = (*((u32*)T5[u.temp[2][0]])
+ ^ *((u32*)T6[u.temp[1][1]])
+ ^ *((u32*)T7[u.temp[0][2]])
+ ^ *((u32*)T8[u.temp[3][3]]));
+ *((u32*)(b+12)) = (*((u32*)T5[u.temp[3][0]])
+ ^ *((u32*)T6[u.temp[2][1]])
+ ^ *((u32*)T7[u.temp[1][2]])
+ ^ *((u32*)T8[u.temp[0][3]]));
+ }
+
+ /* Last round is special. */
+ *((u32*)u.temp[0]) = *((u32*)(b )) ^ *((u32*)rk[1][0]);
+ *((u32*)u.temp[1]) = *((u32*)(b+ 4)) ^ *((u32*)rk[1][1]);
+ *((u32*)u.temp[2]) = *((u32*)(b+ 8)) ^ *((u32*)rk[1][2]);
+ *((u32*)u.temp[3]) = *((u32*)(b+12)) ^ *((u32*)rk[1][3]);
+ b[ 0] = S5[u.temp[0][0]];
+ b[ 1] = S5[u.temp[3][1]];
+ b[ 2] = S5[u.temp[2][2]];
+ b[ 3] = S5[u.temp[1][3]];
+ b[ 4] = S5[u.temp[1][0]];
+ b[ 5] = S5[u.temp[0][1]];
+ b[ 6] = S5[u.temp[3][2]];
+ b[ 7] = S5[u.temp[2][3]];
+ b[ 8] = S5[u.temp[2][0]];
+ b[ 9] = S5[u.temp[1][1]];
+ b[10] = S5[u.temp[0][2]];
+ b[11] = S5[u.temp[3][3]];
+ b[12] = S5[u.temp[3][0]];
+ b[13] = S5[u.temp[2][1]];
+ b[14] = S5[u.temp[1][2]];
+ b[15] = S5[u.temp[0][3]];
+ *((u32*)(b )) ^= *((u32*)rk[0][0]);
+ *((u32*)(b+ 4)) ^= *((u32*)rk[0][1]);
+ *((u32*)(b+ 8)) ^= *((u32*)rk[0][2]);
+ *((u32*)(b+12)) ^= *((u32*)rk[0][3]);
+#undef rk
+}
+
+
+/* Decrypt one block. AX and BX may be the same. */
+static void
+do_decrypt (RIJNDAEL_context *ctx, byte *bx, const byte *ax)
+{
+ /* BX and AX are not necessary correctly aligned. Thus we need to
+ copy them here. */
+ union
+ {
+ u32 dummy[4];
+ byte a[16];
+ } a;
+ union
+ {
+ u32 dummy[4];
+ byte b[16];
+ } b;
+
+ if ( !ctx->decryption_prepared )
+ {
+ prepare_decryption ( ctx );
+ _gcry_burn_stack (64);
+ ctx->decryption_prepared = 1;
+ }
+
+ memcpy (a.a, ax, 16);
+ do_decrypt_aligned (ctx, b.b, a.a);
+ memcpy (bx, b.b, 16);
+#undef rk
+}
+
+
+
+
+static void
+rijndael_decrypt (void *context, byte *b, const byte *a)
+{
+ RIJNDAEL_context *ctx = context;
+
+#ifdef USE_PADLOCK
+ if (ctx->use_padlock)
+ {
+ do_padlock (ctx, 1, b, a);
+ _gcry_burn_stack (48 + 2*sizeof(int) /* FIXME */);
+ }
+ else
+#endif /*USE_PADLOCK*/
+ {
+ do_decrypt (ctx, b, a);
+ _gcry_burn_stack (48+2*sizeof(int));
+ }
+}
+
+
+/* Bulk decryption of complete blocks in CFB mode. Caller needs to
+ make sure that IV is aligned on an unisgned lonhg boundary. This
+ function is only intended for the bulk encryption feature of
+ cipher.c. */
+
+
+/* Bulk decryption of complete blocks in CBC mode. Caller needs to
+ make sure that IV is aligned on an unsigned long boundary. This
+ function is only intended for the bulk encryption feature of
+ cipher.c. */
+
+
+
+
+/* Run the self-tests for AES 128. Returns NULL on success. */
+
+/* Run the self-tests for AES 192. Returns NULL on success. */
+
+
+/* Run the self-tests for AES 256. Returns NULL on success. */
+
+/* Run all the self-tests and return NULL on success. This function
+ is used for the on-the-fly self-tests. */
+
+
+/* SP800-38a.pdf for AES-128. */
+
+
+/* Complete selftest for AES-128 with all modes and driver code. */
+
+/* Complete selftest for AES-192. */
+
+
+/* Complete selftest for AES-256. */
+
+
+
+/* Run a full self-test for ALGO and return 0 on success. */
+
+
+
+
+static const char *rijndael_names[] =
+ {
+ "RIJNDAEL",
+ "AES128",
+ "AES-128",
+ NULL
+ };
+
+static gcry_cipher_oid_spec_t rijndael_oids[] =
+ {
+ { "2.16.840.1.101.3.4.1.1", GCRY_CIPHER_MODE_ECB },
+ { "2.16.840.1.101.3.4.1.2", GCRY_CIPHER_MODE_CBC },
+ { "2.16.840.1.101.3.4.1.3", GCRY_CIPHER_MODE_OFB },
+ { "2.16.840.1.101.3.4.1.4", GCRY_CIPHER_MODE_CFB },
+ { NULL }
+ };
+
+gcry_cipher_spec_t _gcry_cipher_spec_aes =
+ {
+ "AES", rijndael_names, rijndael_oids, 16, 128, sizeof (RIJNDAEL_context),
+ rijndael_setkey, rijndael_encrypt, rijndael_decrypt
+ };
+
+static const char *rijndael192_names[] =
+ {
+ "RIJNDAEL192",
+ "AES-192",
+ NULL
+ };
+
+static gcry_cipher_oid_spec_t rijndael192_oids[] =
+ {
+ { "2.16.840.1.101.3.4.1.21", GCRY_CIPHER_MODE_ECB },
+ { "2.16.840.1.101.3.4.1.22", GCRY_CIPHER_MODE_CBC },
+ { "2.16.840.1.101.3.4.1.23", GCRY_CIPHER_MODE_OFB },
+ { "2.16.840.1.101.3.4.1.24", GCRY_CIPHER_MODE_CFB },
+ { NULL }
+ };
+
+gcry_cipher_spec_t _gcry_cipher_spec_aes192 =
+ {
+ "AES192", rijndael192_names, rijndael192_oids, 16, 192, sizeof (RIJNDAEL_context),
+ rijndael_setkey, rijndael_encrypt, rijndael_decrypt
+ };
+
+static const char *rijndael256_names[] =
+ {
+ "RIJNDAEL256",
+ "AES-256",
+ NULL
+ };
+
+static gcry_cipher_oid_spec_t rijndael256_oids[] =
+ {
+ { "2.16.840.1.101.3.4.1.41", GCRY_CIPHER_MODE_ECB },
+ { "2.16.840.1.101.3.4.1.42", GCRY_CIPHER_MODE_CBC },
+ { "2.16.840.1.101.3.4.1.43", GCRY_CIPHER_MODE_OFB },
+ { "2.16.840.1.101.3.4.1.44", GCRY_CIPHER_MODE_CFB },
+ { NULL }
+ };
+
+gcry_cipher_spec_t _gcry_cipher_spec_aes256 =
+ {
+ "AES256", rijndael256_names, rijndael256_oids, 16, 256,
+ sizeof (RIJNDAEL_context),
+ rijndael_setkey, rijndael_encrypt, rijndael_decrypt
+ };
+
+
+
+GRUB_MOD_INIT(gcry_rijndael)
+{
+ grub_cipher_register (&_gcry_cipher_spec_aes);
+ grub_cipher_register (&_gcry_cipher_spec_aes192);
+ grub_cipher_register (&_gcry_cipher_spec_aes256);
+}
+
+GRUB_MOD_FINI(gcry_rijndael)
+{
+ grub_cipher_unregister (&_gcry_cipher_spec_aes);
+ grub_cipher_unregister (&_gcry_cipher_spec_aes192);
+ grub_cipher_unregister (&_gcry_cipher_spec_aes256);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-21 03:23:54 +0000