diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 22:01:27 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 22:01:27 -0800 |
commit | 4f58cb90bcb04cfe18f524d1c9a65edef5eb3f51 (patch) | |
tree | 8c686e8b736eed7258921909282c0955543c7d2f /crypto/serpent.c | |
parent | e7691a1ce341c80ed9504244a36b31c025217391 (diff) | |
parent | 08c70fc3a239475122e20b7a21dfae4c264c24f7 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (54 commits)
crypto: gf128mul - remove leftover "(EXPERIMENTAL)" in Kconfig
crypto: serpent-sse2 - remove unneeded LRW/XTS #ifdefs
crypto: serpent-sse2 - select LRW and XTS
crypto: twofish-x86_64-3way - remove unneeded LRW/XTS #ifdefs
crypto: twofish-x86_64-3way - select LRW and XTS
crypto: xts - remove dependency on EXPERIMENTAL
crypto: lrw - remove dependency on EXPERIMENTAL
crypto: picoxcell - fix boolean and / or confusion
crypto: caam - remove DECO access initialization code
crypto: caam - fix polarity of "propagate error" logic
crypto: caam - more desc.h cleanups
crypto: caam - desc.h - convert spaces to tabs
crypto: talitos - convert talitos_error to struct device
crypto: talitos - remove NO_IRQ references
crypto: talitos - fix bad kfree
crypto: convert drivers/crypto/* to use module_platform_driver()
char: hw_random: convert drivers/char/hw_random/* to use module_platform_driver()
crypto: serpent-sse2 - should select CRYPTO_CRYPTD
crypto: serpent - rename serpent.c to serpent_generic.c
crypto: serpent - cleanup checkpatch errors and warnings
...
Diffstat (limited to 'crypto/serpent.c')
-rw-r--r-- | crypto/serpent.c | 587 |
1 files changed, 0 insertions, 587 deletions
diff --git a/crypto/serpent.c b/crypto/serpent.c deleted file mode 100644 index b651a55fa56..00000000000 --- a/crypto/serpent.c +++ /dev/null @@ -1,587 +0,0 @@ -/* - * Cryptographic API. - * - * Serpent Cipher Algorithm. - * - * Copyright (C) 2002 Dag Arne Osvik <osvik@ii.uib.no> - * 2003 Herbert Valerio Riedel <hvr@gnu.org> - * - * Added tnepres support: Ruben Jesus Garcia Hernandez <ruben@ugr.es>, 18.10.2004 - * Based on code by hvr - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of 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. - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/errno.h> -#include <asm/byteorder.h> -#include <linux/crypto.h> -#include <linux/types.h> - -/* Key is padded to the maximum of 256 bits before round key generation. - * Any key length <= 256 bits (32 bytes) is allowed by the algorithm. - */ - -#define SERPENT_MIN_KEY_SIZE 0 -#define SERPENT_MAX_KEY_SIZE 32 -#define SERPENT_EXPKEY_WORDS 132 -#define SERPENT_BLOCK_SIZE 16 - -#define PHI 0x9e3779b9UL - -#define keyiter(a,b,c,d,i,j) \ - b ^= d; b ^= c; b ^= a; b ^= PHI ^ i; b = rol32(b,11); k[j] = b; - -#define loadkeys(x0,x1,x2,x3,i) \ - x0=k[i]; x1=k[i+1]; x2=k[i+2]; x3=k[i+3]; - -#define storekeys(x0,x1,x2,x3,i) \ - k[i]=x0; k[i+1]=x1; k[i+2]=x2; k[i+3]=x3; - -#define K(x0,x1,x2,x3,i) \ - x3 ^= k[4*(i)+3]; x2 ^= k[4*(i)+2]; \ - x1 ^= k[4*(i)+1]; x0 ^= k[4*(i)+0]; - -#define LK(x0,x1,x2,x3,x4,i) \ - x0=rol32(x0,13);\ - x2=rol32(x2,3); x1 ^= x0; x4 = x0 << 3; \ - x3 ^= x2; x1 ^= x2; \ - x1=rol32(x1,1); x3 ^= x4; \ - x3=rol32(x3,7); x4 = x1; \ - x0 ^= x1; x4 <<= 7; x2 ^= x3; \ - x0 ^= x3; x2 ^= x4; x3 ^= k[4*i+3]; \ - x1 ^= k[4*i+1]; x0=rol32(x0,5); x2=rol32(x2,22);\ - x0 ^= k[4*i+0]; x2 ^= k[4*i+2]; - -#define KL(x0,x1,x2,x3,x4,i) \ - x0 ^= k[4*i+0]; x1 ^= k[4*i+1]; x2 ^= k[4*i+2]; \ - x3 ^= k[4*i+3]; x0=ror32(x0,5); x2=ror32(x2,22);\ - x4 = x1; x2 ^= x3; x0 ^= x3; \ - x4 <<= 7; x0 ^= x1; x1=ror32(x1,1); \ - x2 ^= x4; x3=ror32(x3,7); x4 = x0 << 3; \ - x1 ^= x0; x3 ^= x4; x0=ror32(x0,13);\ - x1 ^= x2; x3 ^= x2; x2=ror32(x2,3); - -#define S0(x0,x1,x2,x3,x4) \ - x4 = x3; \ - x3 |= x0; x0 ^= x4; x4 ^= x2; \ - x4 =~ x4; x3 ^= x1; x1 &= x0; \ - x1 ^= x4; x2 ^= x0; x0 ^= x3; \ - x4 |= x0; x0 ^= x2; x2 &= x1; \ - x3 ^= x2; x1 =~ x1; x2 ^= x4; \ - x1 ^= x2; - -#define S1(x0,x1,x2,x3,x4) \ - x4 = x1; \ - x1 ^= x0; x0 ^= x3; x3 =~ x3; \ - x4 &= x1; x0 |= x1; x3 ^= x2; \ - x0 ^= x3; x1 ^= x3; x3 ^= x4; \ - x1 |= x4; x4 ^= x2; x2 &= x0; \ - x2 ^= x1; x1 |= x0; x0 =~ x0; \ - x0 ^= x2; x4 ^= x1; - -#define S2(x0,x1,x2,x3,x4) \ - x3 =~ x3; \ - x1 ^= x0; x4 = x0; x0 &= x2; \ - x0 ^= x3; x3 |= x4; x2 ^= x1; \ - x3 ^= x1; x1 &= x0; x0 ^= x2; \ - x2 &= x3; x3 |= x1; x0 =~ x0; \ - x3 ^= x0; x4 ^= x0; x0 ^= x2; \ - x1 |= x2; - -#define S3(x0,x1,x2,x3,x4) \ - x4 = x1; \ - x1 ^= x3; x3 |= x0; x4 &= x0; \ - x0 ^= x2; x2 ^= x1; x1 &= x3; \ - x2 ^= x3; x0 |= x4; x4 ^= x3; \ - x1 ^= x0; x0 &= x3; x3 &= x4; \ - x3 ^= x2; x4 |= x1; x2 &= x1; \ - x4 ^= x3; x0 ^= x3; x3 ^= x2; - -#define S4(x0,x1,x2,x3,x4) \ - x4 = x3; \ - x3 &= x0; x0 ^= x4; \ - x3 ^= x2; x2 |= x4; x0 ^= x1; \ - x4 ^= x3; x2 |= x0; \ - x2 ^= x1; x1 &= x0; \ - x1 ^= x4; x4 &= x2; x2 ^= x3; \ - x4 ^= x0; x3 |= x1; x1 =~ x1; \ - x3 ^= x0; - -#define S5(x0,x1,x2,x3,x4) \ - x4 = x1; x1 |= x0; \ - x2 ^= x1; x3 =~ x3; x4 ^= x0; \ - x0 ^= x2; x1 &= x4; x4 |= x3; \ - x4 ^= x0; x0 &= x3; x1 ^= x3; \ - x3 ^= x2; x0 ^= x1; x2 &= x4; \ - x1 ^= x2; x2 &= x0; \ - x3 ^= x2; - -#define S6(x0,x1,x2,x3,x4) \ - x4 = x1; \ - x3 ^= x0; x1 ^= x2; x2 ^= x0; \ - x0 &= x3; x1 |= x3; x4 =~ x4; \ - x0 ^= x1; x1 ^= x2; \ - x3 ^= x4; x4 ^= x0; x2 &= x0; \ - x4 ^= x1; x2 ^= x3; x3 &= x1; \ - x3 ^= x0; x1 ^= x2; - -#define S7(x0,x1,x2,x3,x4) \ - x1 =~ x1; \ - x4 = x1; x0 =~ x0; x1 &= x2; \ - x1 ^= x3; x3 |= x4; x4 ^= x2; \ - x2 ^= x3; x3 ^= x0; x0 |= x1; \ - x2 &= x0; x0 ^= x4; x4 ^= x3; \ - x3 &= x0; x4 ^= x1; \ - x2 ^= x4; x3 ^= x1; x4 |= x0; \ - x4 ^= x1; - -#define SI0(x0,x1,x2,x3,x4) \ - x4 = x3; x1 ^= x0; \ - x3 |= x1; x4 ^= x1; x0 =~ x0; \ - x2 ^= x3; x3 ^= x0; x0 &= x1; \ - x0 ^= x2; x2 &= x3; x3 ^= x4; \ - x2 ^= x3; x1 ^= x3; x3 &= x0; \ - x1 ^= x0; x0 ^= x2; x4 ^= x3; - -#define SI1(x0,x1,x2,x3,x4) \ - x1 ^= x3; x4 = x0; \ - x0 ^= x2; x2 =~ x2; x4 |= x1; \ - x4 ^= x3; x3 &= x1; x1 ^= x2; \ - x2 &= x4; x4 ^= x1; x1 |= x3; \ - x3 ^= x0; x2 ^= x0; x0 |= x4; \ - x2 ^= x4; x1 ^= x0; \ - x4 ^= x1; - -#define SI2(x0,x1,x2,x3,x4) \ - x2 ^= x1; x4 = x3; x3 =~ x3; \ - x3 |= x2; x2 ^= x4; x4 ^= x0; \ - x3 ^= x1; x1 |= x2; x2 ^= x0; \ - x1 ^= x4; x4 |= x3; x2 ^= x3; \ - x4 ^= x2; x2 &= x1; \ - x2 ^= x3; x3 ^= x4; x4 ^= x0; - -#define SI3(x0,x1,x2,x3,x4) \ - x2 ^= x1; \ - x4 = x1; x1 &= x2; \ - x1 ^= x0; x0 |= x4; x4 ^= x3; \ - x0 ^= x3; x3 |= x1; x1 ^= x2; \ - x1 ^= x3; x0 ^= x2; x2 ^= x3; \ - x3 &= x1; x1 ^= x0; x0 &= x2; \ - x4 ^= x3; x3 ^= x0; x0 ^= x1; - -#define SI4(x0,x1,x2,x3,x4) \ - x2 ^= x3; x4 = x0; x0 &= x1; \ - x0 ^= x2; x2 |= x3; x4 =~ x4; \ - x1 ^= x0; x0 ^= x2; x2 &= x4; \ - x2 ^= x0; x0 |= x4; \ - x0 ^= x3; x3 &= x2; \ - x4 ^= x3; x3 ^= x1; x1 &= x0; \ - x4 ^= x1; x0 ^= x3; - -#define SI5(x0,x1,x2,x3,x4) \ - x4 = x1; x1 |= x2; \ - x2 ^= x4; x1 ^= x3; x3 &= x4; \ - x2 ^= x3; x3 |= x0; x0 =~ x0; \ - x3 ^= x2; x2 |= x0; x4 ^= x1; \ - x2 ^= x4; x4 &= x0; x0 ^= x1; \ - x1 ^= x3; x0 &= x2; x2 ^= x3; \ - x0 ^= x2; x2 ^= x4; x4 ^= x3; - -#define SI6(x0,x1,x2,x3,x4) \ - x0 ^= x2; \ - x4 = x0; x0 &= x3; x2 ^= x3; \ - x0 ^= x2; x3 ^= x1; x2 |= x4; \ - x2 ^= x3; x3 &= x0; x0 =~ x0; \ - x3 ^= x1; x1 &= x2; x4 ^= x0; \ - x3 ^= x4; x4 ^= x2; x0 ^= x1; \ - x2 ^= x0; - -#define SI7(x0,x1,x2,x3,x4) \ - x4 = x3; x3 &= x0; x0 ^= x2; \ - x2 |= x4; x4 ^= x1; x0 =~ x0; \ - x1 |= x3; x4 ^= x0; x0 &= x2; \ - x0 ^= x1; x1 &= x2; x3 ^= x2; \ - x4 ^= x3; x2 &= x3; x3 |= x0; \ - x1 ^= x4; x3 ^= x4; x4 &= x0; \ - x4 ^= x2; - -struct serpent_ctx { - u32 expkey[SERPENT_EXPKEY_WORDS]; -}; - - -static int serpent_setkey(struct crypto_tfm *tfm, const u8 *key, - unsigned int keylen) -{ - struct serpent_ctx *ctx = crypto_tfm_ctx(tfm); - u32 *k = ctx->expkey; - u8 *k8 = (u8 *)k; - u32 r0,r1,r2,r3,r4; - int i; - - /* Copy key, add padding */ - - for (i = 0; i < keylen; ++i) - k8[i] = key[i]; - if (i < SERPENT_MAX_KEY_SIZE) - k8[i++] = 1; - while (i < SERPENT_MAX_KEY_SIZE) - k8[i++] = 0; - - /* Expand key using polynomial */ - - r0 = le32_to_cpu(k[3]); - r1 = le32_to_cpu(k[4]); - r2 = le32_to_cpu(k[5]); - r3 = le32_to_cpu(k[6]); - r4 = le32_to_cpu(k[7]); - - keyiter(le32_to_cpu(k[0]),r0,r4,r2,0,0); - keyiter(le32_to_cpu(k[1]),r1,r0,r3,1,1); - keyiter(le32_to_cpu(k[2]),r2,r1,r4,2,2); - keyiter(le32_to_cpu(k[3]),r3,r2,r0,3,3); - keyiter(le32_to_cpu(k[4]),r4,r3,r1,4,4); - keyiter(le32_to_cpu(k[5]),r0,r4,r2,5,5); - keyiter(le32_to_cpu(k[6]),r1,r0,r3,6,6); - keyiter(le32_to_cpu(k[7]),r2,r1,r4,7,7); - - keyiter(k[ 0],r3,r2,r0, 8, 8); keyiter(k[ 1],r4,r3,r1, 9, 9); - keyiter(k[ 2],r0,r4,r2, 10, 10); keyiter(k[ 3],r1,r0,r3, 11, 11); - keyiter(k[ 4],r2,r1,r4, 12, 12); keyiter(k[ 5],r3,r2,r0, 13, 13); - keyiter(k[ 6],r4,r3,r1, 14, 14); keyiter(k[ 7],r0,r4,r2, 15, 15); - keyiter(k[ 8],r1,r0,r3, 16, 16); keyiter(k[ 9],r2,r1,r4, 17, 17); - keyiter(k[ 10],r3,r2,r0, 18, 18); keyiter(k[ 11],r4,r3,r1, 19, 19); - keyiter(k[ 12],r0,r4,r2, 20, 20); keyiter(k[ 13],r1,r0,r3, 21, 21); - keyiter(k[ 14],r2,r1,r4, 22, 22); keyiter(k[ 15],r3,r2,r0, 23, 23); - keyiter(k[ 16],r4,r3,r1, 24, 24); keyiter(k[ 17],r0,r4,r2, 25, 25); - keyiter(k[ 18],r1,r0,r3, 26, 26); keyiter(k[ 19],r2,r1,r4, 27, 27); - keyiter(k[ 20],r3,r2,r0, 28, 28); keyiter(k[ 21],r4,r3,r1, 29, 29); - keyiter(k[ 22],r0,r4,r2, 30, 30); keyiter(k[ 23],r1,r0,r3, 31, 31); - - k += 50; - - keyiter(k[-26],r2,r1,r4, 32,-18); keyiter(k[-25],r3,r2,r0, 33,-17); - keyiter(k[-24],r4,r3,r1, 34,-16); keyiter(k[-23],r0,r4,r2, 35,-15); - keyiter(k[-22],r1,r0,r3, 36,-14); keyiter(k[-21],r2,r1,r4, 37,-13); - keyiter(k[-20],r3,r2,r0, 38,-12); keyiter(k[-19],r4,r3,r1, 39,-11); - keyiter(k[-18],r0,r4,r2, 40,-10); keyiter(k[-17],r1,r0,r3, 41, -9); - keyiter(k[-16],r2,r1,r4, 42, -8); keyiter(k[-15],r3,r2,r0, 43, -7); - keyiter(k[-14],r4,r3,r1, 44, -6); keyiter(k[-13],r0,r4,r2, 45, -5); - keyiter(k[-12],r1,r0,r3, 46, -4); keyiter(k[-11],r2,r1,r4, 47, -3); - keyiter(k[-10],r3,r2,r0, 48, -2); keyiter(k[ -9],r4,r3,r1, 49, -1); - keyiter(k[ -8],r0,r4,r2, 50, 0); keyiter(k[ -7],r1,r0,r3, 51, 1); - keyiter(k[ -6],r2,r1,r4, 52, 2); keyiter(k[ -5],r3,r2,r0, 53, 3); - keyiter(k[ -4],r4,r3,r1, 54, 4); keyiter(k[ -3],r0,r4,r2, 55, 5); - keyiter(k[ -2],r1,r0,r3, 56, 6); keyiter(k[ -1],r2,r1,r4, 57, 7); - keyiter(k[ 0],r3,r2,r0, 58, 8); keyiter(k[ 1],r4,r3,r1, 59, 9); - keyiter(k[ 2],r0,r4,r2, 60, 10); keyiter(k[ 3],r1,r0,r3, 61, 11); - keyiter(k[ 4],r2,r1,r4, 62, 12); keyiter(k[ 5],r3,r2,r0, 63, 13); - keyiter(k[ 6],r4,r3,r1, 64, 14); keyiter(k[ 7],r0,r4,r2, 65, 15); - keyiter(k[ 8],r1,r0,r3, 66, 16); keyiter(k[ 9],r2,r1,r4, 67, 17); - keyiter(k[ 10],r3,r2,r0, 68, 18); keyiter(k[ 11],r4,r3,r1, 69, 19); - keyiter(k[ 12],r0,r4,r2, 70, 20); keyiter(k[ 13],r1,r0,r3, 71, 21); - keyiter(k[ 14],r2,r1,r4, 72, 22); keyiter(k[ 15],r3,r2,r0, 73, 23); - keyiter(k[ 16],r4,r3,r1, 74, 24); keyiter(k[ 17],r0,r4,r2, 75, 25); - keyiter(k[ 18],r1,r0,r3, 76, 26); keyiter(k[ 19],r2,r1,r4, 77, 27); - keyiter(k[ 20],r3,r2,r0, 78, 28); keyiter(k[ 21],r4,r3,r1, 79, 29); - keyiter(k[ 22],r0,r4,r2, 80, 30); keyiter(k[ 23],r1,r0,r3, 81, 31); - - k += 50; - - keyiter(k[-26],r2,r1,r4, 82,-18); keyiter(k[-25],r3,r2,r0, 83,-17); - keyiter(k[-24],r4,r3,r1, 84,-16); keyiter(k[-23],r0,r4,r2, 85,-15); - keyiter(k[-22],r1,r0,r3, 86,-14); keyiter(k[-21],r2,r1,r4, 87,-13); - keyiter(k[-20],r3,r2,r0, 88,-12); keyiter(k[-19],r4,r3,r1, 89,-11); - keyiter(k[-18],r0,r4,r2, 90,-10); keyiter(k[-17],r1,r0,r3, 91, -9); - keyiter(k[-16],r2,r1,r4, 92, -8); keyiter(k[-15],r3,r2,r0, 93, -7); - keyiter(k[-14],r4,r3,r1, 94, -6); keyiter(k[-13],r0,r4,r2, 95, -5); - keyiter(k[-12],r1,r0,r3, 96, -4); keyiter(k[-11],r2,r1,r4, 97, -3); - keyiter(k[-10],r3,r2,r0, 98, -2); keyiter(k[ -9],r4,r3,r1, 99, -1); - keyiter(k[ -8],r0,r4,r2,100, 0); keyiter(k[ -7],r1,r0,r3,101, 1); - keyiter(k[ -6],r2,r1,r4,102, 2); keyiter(k[ -5],r3,r2,r0,103, 3); - keyiter(k[ -4],r4,r3,r1,104, 4); keyiter(k[ -3],r0,r4,r2,105, 5); - keyiter(k[ -2],r1,r0,r3,106, 6); keyiter(k[ -1],r2,r1,r4,107, 7); - keyiter(k[ 0],r3,r2,r0,108, 8); keyiter(k[ 1],r4,r3,r1,109, 9); - keyiter(k[ 2],r0,r4,r2,110, 10); keyiter(k[ 3],r1,r0,r3,111, 11); - keyiter(k[ 4],r2,r1,r4,112, 12); keyiter(k[ 5],r3,r2,r0,113, 13); - keyiter(k[ 6],r4,r3,r1,114, 14); keyiter(k[ 7],r0,r4,r2,115, 15); - keyiter(k[ 8],r1,r0,r3,116, 16); keyiter(k[ 9],r2,r1,r4,117, 17); - keyiter(k[ 10],r3,r2,r0,118, 18); keyiter(k[ 11],r4,r3,r1,119, 19); - keyiter(k[ 12],r0,r4,r2,120, 20); keyiter(k[ 13],r1,r0,r3,121, 21); - keyiter(k[ 14],r2,r1,r4,122, 22); keyiter(k[ 15],r3,r2,r0,123, 23); - keyiter(k[ 16],r4,r3,r1,124, 24); keyiter(k[ 17],r0,r4,r2,125, 25); - keyiter(k[ 18],r1,r0,r3,126, 26); keyiter(k[ 19],r2,r1,r4,127, 27); - keyiter(k[ 20],r3,r2,r0,128, 28); keyiter(k[ 21],r4,r3,r1,129, 29); - keyiter(k[ 22],r0,r4,r2,130, 30); keyiter(k[ 23],r1,r0,r3,131, 31); - - /* Apply S-boxes */ - - S3(r3,r4,r0,r1,r2); storekeys(r1,r2,r4,r3, 28); loadkeys(r1,r2,r4,r3, 24); - S4(r1,r2,r4,r3,r0); storekeys(r2,r4,r3,r0, 24); loadkeys(r2,r4,r3,r0, 20); - S5(r2,r4,r3,r0,r1); storekeys(r1,r2,r4,r0, 20); loadkeys(r1,r2,r4,r0, 16); - S6(r1,r2,r4,r0,r3); storekeys(r4,r3,r2,r0, 16); loadkeys(r4,r3,r2,r0, 12); - S7(r4,r3,r2,r0,r1); storekeys(r1,r2,r0,r4, 12); loadkeys(r1,r2,r0,r4, 8); - S0(r1,r2,r0,r4,r3); storekeys(r0,r2,r4,r1, 8); loadkeys(r0,r2,r4,r1, 4); - S1(r0,r2,r4,r1,r3); storekeys(r3,r4,r1,r0, 4); loadkeys(r3,r4,r1,r0, 0); - S2(r3,r4,r1,r0,r2); storekeys(r2,r4,r3,r0, 0); loadkeys(r2,r4,r3,r0, -4); - S3(r2,r4,r3,r0,r1); storekeys(r0,r1,r4,r2, -4); loadkeys(r0,r1,r4,r2, -8); - S4(r0,r1,r4,r2,r3); storekeys(r1,r4,r2,r3, -8); loadkeys(r1,r4,r2,r3,-12); - S5(r1,r4,r2,r3,r0); storekeys(r0,r1,r4,r3,-12); loadkeys(r0,r1,r4,r3,-16); - S6(r0,r1,r4,r3,r2); storekeys(r4,r2,r1,r3,-16); loadkeys(r4,r2,r1,r3,-20); - S7(r4,r2,r1,r3,r0); storekeys(r0,r1,r3,r4,-20); loadkeys(r0,r1,r3,r4,-24); - S0(r0,r1,r3,r4,r2); storekeys(r3,r1,r4,r0,-24); loadkeys(r3,r1,r4,r0,-28); - k -= 50; - S1(r3,r1,r4,r0,r2); storekeys(r2,r4,r0,r3, 22); loadkeys(r2,r4,r0,r3, 18); - S2(r2,r4,r0,r3,r1); storekeys(r1,r4,r2,r3, 18); loadkeys(r1,r4,r2,r3, 14); - S3(r1,r4,r2,r3,r0); storekeys(r3,r0,r4,r1, 14); loadkeys(r3,r0,r4,r1, 10); - S4(r3,r0,r4,r1,r2); storekeys(r0,r4,r1,r2, 10); loadkeys(r0,r4,r1,r2, 6); - S5(r0,r4,r1,r2,r3); storekeys(r3,r0,r4,r2, 6); loadkeys(r3,r0,r4,r2, 2); - S6(r3,r0,r4,r2,r1); storekeys(r4,r1,r0,r2, 2); loadkeys(r4,r1,r0,r2, -2); - S7(r4,r1,r0,r2,r3); storekeys(r3,r0,r2,r4, -2); loadkeys(r3,r0,r2,r4, -6); - S0(r3,r0,r2,r4,r1); storekeys(r2,r0,r4,r3, -6); loadkeys(r2,r0,r4,r3,-10); - S1(r2,r0,r4,r3,r1); storekeys(r1,r4,r3,r2,-10); loadkeys(r1,r4,r3,r2,-14); - S2(r1,r4,r3,r2,r0); storekeys(r0,r4,r1,r2,-14); loadkeys(r0,r4,r1,r2,-18); - S3(r0,r4,r1,r2,r3); storekeys(r2,r3,r4,r0,-18); loadkeys(r2,r3,r4,r0,-22); - k -= 50; - S4(r2,r3,r4,r0,r1); storekeys(r3,r4,r0,r1, 28); loadkeys(r3,r4,r0,r1, 24); - S5(r3,r4,r0,r1,r2); storekeys(r2,r3,r4,r1, 24); loadkeys(r2,r3,r4,r1, 20); - S6(r2,r3,r4,r1,r0); storekeys(r4,r0,r3,r1, 20); loadkeys(r4,r0,r3,r1, 16); - S7(r4,r0,r3,r1,r2); storekeys(r2,r3,r1,r4, 16); loadkeys(r2,r3,r1,r4, 12); - S0(r2,r3,r1,r4,r0); storekeys(r1,r3,r4,r2, 12); loadkeys(r1,r3,r4,r2, 8); - S1(r1,r3,r4,r2,r0); storekeys(r0,r4,r2,r1, 8); loadkeys(r0,r4,r2,r1, 4); - S2(r0,r4,r2,r1,r3); storekeys(r3,r4,r0,r1, 4); loadkeys(r3,r4,r0,r1, 0); - S3(r3,r4,r0,r1,r2); storekeys(r1,r2,r4,r3, 0); - - return 0; -} - -static void serpent_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) -{ - struct serpent_ctx *ctx = crypto_tfm_ctx(tfm); - const u32 - *k = ctx->expkey; - const __le32 *s = (const __le32 *)src; - __le32 *d = (__le32 *)dst; - u32 r0, r1, r2, r3, r4; - -/* - * Note: The conversions between u8* and u32* might cause trouble - * on architectures with stricter alignment rules than x86 - */ - - r0 = le32_to_cpu(s[0]); - r1 = le32_to_cpu(s[1]); - r2 = le32_to_cpu(s[2]); - r3 = le32_to_cpu(s[3]); - - K(r0,r1,r2,r3,0); - S0(r0,r1,r2,r3,r4); LK(r2,r1,r3,r0,r4,1); - S1(r2,r1,r3,r0,r4); LK(r4,r3,r0,r2,r1,2); - S2(r4,r3,r0,r2,r1); LK(r1,r3,r4,r2,r0,3); - S3(r1,r3,r4,r2,r0); LK(r2,r0,r3,r1,r4,4); - S4(r2,r0,r3,r1,r4); LK(r0,r3,r1,r4,r2,5); - S5(r0,r3,r1,r4,r2); LK(r2,r0,r3,r4,r1,6); - S6(r2,r0,r3,r4,r1); LK(r3,r1,r0,r4,r2,7); - S7(r3,r1,r0,r4,r2); LK(r2,r0,r4,r3,r1,8); - S0(r2,r0,r4,r3,r1); LK(r4,r0,r3,r2,r1,9); - S1(r4,r0,r3,r2,r1); LK(r1,r3,r2,r4,r0,10); - S2(r1,r3,r2,r4,r0); LK(r0,r3,r1,r4,r2,11); - S3(r0,r3,r1,r4,r2); LK(r4,r2,r3,r0,r1,12); - S4(r4,r2,r3,r0,r1); LK(r2,r3,r0,r1,r4,13); - S5(r2,r3,r0,r1,r4); LK(r4,r2,r3,r1,r0,14); - S6(r4,r2,r3,r1,r0); LK(r3,r0,r2,r1,r4,15); - S7(r3,r0,r2,r1,r4); LK(r4,r2,r1,r3,r0,16); - S0(r4,r2,r1,r3,r0); LK(r1,r2,r3,r4,r0,17); - S1(r1,r2,r3,r4,r0); LK(r0,r3,r4,r1,r2,18); - S2(r0,r3,r4,r1,r2); LK(r2,r3,r0,r1,r4,19); - S3(r2,r3,r0,r1,r4); LK(r1,r4,r3,r2,r0,20); - S4(r1,r4,r3,r2,r0); LK(r4,r3,r2,r0,r1,21); - S5(r4,r3,r2,r0,r1); LK(r1,r4,r3,r0,r2,22); - S6(r1,r4,r3,r0,r2); LK(r3,r2,r4,r0,r1,23); - S7(r3,r2,r4,r0,r1); LK(r1,r4,r0,r3,r2,24); - S0(r1,r4,r0,r3,r2); LK(r0,r4,r3,r1,r2,25); - S1(r0,r4,r3,r1,r2); LK(r2,r3,r1,r0,r4,26); - S2(r2,r3,r1,r0,r4); LK(r4,r3,r2,r0,r1,27); - S3(r4,r3,r2,r0,r1); LK(r0,r1,r3,r4,r2,28); - S4(r0,r1,r3,r4,r2); LK(r1,r3,r4,r2,r0,29); - S5(r1,r3,r4,r2,r0); LK(r0,r1,r3,r2,r4,30); - S6(r0,r1,r3,r2,r4); LK(r3,r4,r1,r2,r0,31); - S7(r3,r4,r1,r2,r0); K(r0,r1,r2,r3,32); - - d[0] = cpu_to_le32(r0); - d[1] = cpu_to_le32(r1); - d[2] = cpu_to_le32(r2); - d[3] = cpu_to_le32(r3); -} - -static void serpent_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) -{ - struct serpent_ctx *ctx = crypto_tfm_ctx(tfm); - const u32 - *k = ((struct serpent_ctx *)ctx)->expkey; - const __le32 *s = (const __le32 *)src; - __le32 *d = (__le32 *)dst; - u32 r0, r1, r2, r3, r4; - - r0 = le32_to_cpu(s[0]); - r1 = le32_to_cpu(s[1]); - r2 = le32_to_cpu(s[2]); - r3 = le32_to_cpu(s[3]); - - K(r0,r1,r2,r3,32); - SI7(r0,r1,r2,r3,r4); KL(r1,r3,r0,r4,r2,31); - SI6(r1,r3,r0,r4,r2); KL(r0,r2,r4,r1,r3,30); - SI5(r0,r2,r4,r1,r3); KL(r2,r3,r0,r4,r1,29); - SI4(r2,r3,r0,r4,r1); KL(r2,r0,r1,r4,r3,28); - SI3(r2,r0,r1,r4,r3); KL(r1,r2,r3,r4,r0,27); - SI2(r1,r2,r3,r4,r0); KL(r2,r0,r4,r3,r1,26); - SI1(r2,r0,r4,r3,r1); KL(r1,r0,r4,r3,r2,25); - SI0(r1,r0,r4,r3,r2); KL(r4,r2,r0,r1,r3,24); - SI7(r4,r2,r0,r1,r3); KL(r2,r1,r4,r3,r0,23); - SI6(r2,r1,r4,r3,r0); KL(r4,r0,r3,r2,r1,22); - SI5(r4,r0,r3,r2,r1); KL(r0,r1,r4,r3,r2,21); - SI4(r0,r1,r4,r3,r2); KL(r0,r4,r2,r3,r1,20); - SI3(r0,r4,r2,r3,r1); KL(r2,r0,r1,r3,r4,19); - SI2(r2,r0,r1,r3,r4); KL(r0,r4,r3,r1,r2,18); - SI1(r0,r4,r3,r1,r2); KL(r2,r4,r3,r1,r0,17); - SI0(r2,r4,r3,r1,r0); KL(r3,r0,r4,r2,r1,16); - SI7(r3,r0,r4,r2,r1); KL(r0,r2,r3,r1,r4,15); - SI6(r0,r2,r3,r1,r4); KL(r3,r4,r1,r0,r2,14); - SI5(r3,r4,r1,r0,r2); KL(r4,r2,r3,r1,r0,13); - SI4(r4,r2,r3,r1,r0); KL(r4,r3,r0,r1,r2,12); - SI3(r4,r3,r0,r1,r2); KL(r0,r4,r2,r1,r3,11); - SI2(r0,r4,r2,r1,r3); KL(r4,r3,r1,r2,r0,10); - SI1(r4,r3,r1,r2,r0); KL(r0,r3,r1,r2,r4,9); - SI0(r0,r3,r1,r2,r4); KL(r1,r4,r3,r0,r2,8); - SI7(r1,r4,r3,r0,r2); KL(r4,r0,r1,r2,r3,7); - SI6(r4,r0,r1,r2,r3); KL(r1,r3,r2,r4,r0,6); - SI5(r1,r3,r2,r4,r0); KL(r3,r0,r1,r2,r4,5); - SI4(r3,r0,r1,r2,r4); KL(r3,r1,r4,r2,r0,4); - SI3(r3,r1,r4,r2,r0); KL(r4,r3,r0,r2,r1,3); - SI2(r4,r3,r0,r2,r1); KL(r3,r1,r2,r0,r4,2); - SI1(r3,r1,r2,r0,r4); KL(r4,r1,r2,r0,r3,1); - SI0(r4,r1,r2,r0,r3); K(r2,r3,r1,r4,0); - - d[0] = cpu_to_le32(r2); - d[1] = cpu_to_le32(r3); - d[2] = cpu_to_le32(r1); - d[3] = cpu_to_le32(r4); -} - -static struct crypto_alg serpent_alg = { - .cra_name = "serpent", - .cra_flags = CRYPTO_ALG_TYPE_CIPHER, - .cra_blocksize = SERPENT_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct serpent_ctx), - .cra_alignmask = 3, - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(serpent_alg.cra_list), - .cra_u = { .cipher = { - .cia_min_keysize = SERPENT_MIN_KEY_SIZE, - .cia_max_keysize = SERPENT_MAX_KEY_SIZE, - .cia_setkey = serpent_setkey, - .cia_encrypt = serpent_encrypt, - .cia_decrypt = serpent_decrypt } } -}; - -static int tnepres_setkey(struct crypto_tfm *tfm, const u8 *key, - unsigned int keylen) -{ - u8 rev_key[SERPENT_MAX_KEY_SIZE]; - int i; - - for (i = 0; i < keylen; ++i) - rev_key[keylen - i - 1] = key[i]; - - return serpent_setkey(tfm, rev_key, keylen); -} - -static void tnepres_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) -{ - const u32 * const s = (const u32 * const)src; - u32 * const d = (u32 * const)dst; - - u32 rs[4], rd[4]; - - rs[0] = swab32(s[3]); - rs[1] = swab32(s[2]); - rs[2] = swab32(s[1]); - rs[3] = swab32(s[0]); - - serpent_encrypt(tfm, (u8 *)rd, (u8 *)rs); - - d[0] = swab32(rd[3]); - d[1] = swab32(rd[2]); - d[2] = swab32(rd[1]); - d[3] = swab32(rd[0]); -} - -static void tnepres_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) -{ - const u32 * const s = (const u32 * const)src; - u32 * const d = (u32 * const)dst; - - u32 rs[4], rd[4]; - - rs[0] = swab32(s[3]); - rs[1] = swab32(s[2]); - rs[2] = swab32(s[1]); - rs[3] = swab32(s[0]); - - serpent_decrypt(tfm, (u8 *)rd, (u8 *)rs); - - d[0] = swab32(rd[3]); - d[1] = swab32(rd[2]); - d[2] = swab32(rd[1]); - d[3] = swab32(rd[0]); -} - -static struct crypto_alg tnepres_alg = { - .cra_name = "tnepres", - .cra_flags = CRYPTO_ALG_TYPE_CIPHER, - .cra_blocksize = SERPENT_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct serpent_ctx), - .cra_alignmask = 3, - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(serpent_alg.cra_list), - .cra_u = { .cipher = { - .cia_min_keysize = SERPENT_MIN_KEY_SIZE, - .cia_max_keysize = SERPENT_MAX_KEY_SIZE, - .cia_setkey = tnepres_setkey, - .cia_encrypt = tnepres_encrypt, - .cia_decrypt = tnepres_decrypt } } -}; - -static int __init serpent_mod_init(void) -{ - int ret = crypto_register_alg(&serpent_alg); - - if (ret) - return ret; - - ret = crypto_register_alg(&tnepres_alg); - - if (ret) - crypto_unregister_alg(&serpent_alg); - - return ret; -} - -static void __exit serpent_mod_fini(void) -{ - crypto_unregister_alg(&tnepres_alg); - crypto_unregister_alg(&serpent_alg); -} - -module_init(serpent_mod_init); -module_exit(serpent_mod_fini); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Serpent and tnepres (kerneli compatible serpent reversed) Cipher Algorithm"); -MODULE_AUTHOR("Dag Arne Osvik <osvik@ii.uib.no>"); -MODULE_ALIAS("tnepres"); |