From 2deed786d99390d5abe06a2a300d0643305bffcb Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Wed, 23 Nov 2011 12:21:06 +0200 Subject: crypto: serpent - rename serpent.c to serpent_generic.c Now that serpent.c has been cleaned from checkpatch warnings, we can do clean rename. Signed-off-by: Jussi Kivilinna Signed-off-by: Herbert Xu --- crypto/serpent.c | 684 ------------------------------------------------------- 1 file changed, 684 deletions(-) delete mode 100644 crypto/serpent.c (limited to 'crypto/serpent.c') diff --git a/crypto/serpent.c b/crypto/serpent.c deleted file mode 100644 index 8f32cf35e5ce..000000000000 --- a/crypto/serpent.c +++ /dev/null @@ -1,684 +0,0 @@ -/* - * Cryptographic API. - * - * Serpent Cipher Algorithm. - * - * Copyright (C) 2002 Dag Arne Osvik - * 2003 Herbert Valerio Riedel - * - * Added tnepres support: - * Ruben Jesus Garcia Hernandez , 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 -#include -#include -#include -#include -#include -#include - -/* 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 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 store_and_load_keys(x0, x1, x2, x3, s, l) \ - ({ storekeys(x0, x1, x2, x3, s); loadkeys(x0, x1, x2, x3, l); }) - -#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; \ - }) - -int __serpent_setkey(struct serpent_ctx *ctx, const u8 *key, - unsigned int keylen) -{ - 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); store_and_load_keys(r1, r2, r4, r3, 28, 24); - S4(r1, r2, r4, r3, r0); store_and_load_keys(r2, r4, r3, r0, 24, 20); - S5(r2, r4, r3, r0, r1); store_and_load_keys(r1, r2, r4, r0, 20, 16); - S6(r1, r2, r4, r0, r3); store_and_load_keys(r4, r3, r2, r0, 16, 12); - S7(r4, r3, r2, r0, r1); store_and_load_keys(r1, r2, r0, r4, 12, 8); - S0(r1, r2, r0, r4, r3); store_and_load_keys(r0, r2, r4, r1, 8, 4); - S1(r0, r2, r4, r1, r3); store_and_load_keys(r3, r4, r1, r0, 4, 0); - S2(r3, r4, r1, r0, r2); store_and_load_keys(r2, r4, r3, r0, 0, -4); - S3(r2, r4, r3, r0, r1); store_and_load_keys(r0, r1, r4, r2, -4, -8); - S4(r0, r1, r4, r2, r3); store_and_load_keys(r1, r4, r2, r3, -8, -12); - S5(r1, r4, r2, r3, r0); store_and_load_keys(r0, r1, r4, r3, -12, -16); - S6(r0, r1, r4, r3, r2); store_and_load_keys(r4, r2, r1, r3, -16, -20); - S7(r4, r2, r1, r3, r0); store_and_load_keys(r0, r1, r3, r4, -20, -24); - S0(r0, r1, r3, r4, r2); store_and_load_keys(r3, r1, r4, r0, -24, -28); - k -= 50; - S1(r3, r1, r4, r0, r2); store_and_load_keys(r2, r4, r0, r3, 22, 18); - S2(r2, r4, r0, r3, r1); store_and_load_keys(r1, r4, r2, r3, 18, 14); - S3(r1, r4, r2, r3, r0); store_and_load_keys(r3, r0, r4, r1, 14, 10); - S4(r3, r0, r4, r1, r2); store_and_load_keys(r0, r4, r1, r2, 10, 6); - S5(r0, r4, r1, r2, r3); store_and_load_keys(r3, r0, r4, r2, 6, 2); - S6(r3, r0, r4, r2, r1); store_and_load_keys(r4, r1, r0, r2, 2, -2); - S7(r4, r1, r0, r2, r3); store_and_load_keys(r3, r0, r2, r4, -2, -6); - S0(r3, r0, r2, r4, r1); store_and_load_keys(r2, r0, r4, r3, -6, -10); - S1(r2, r0, r4, r3, r1); store_and_load_keys(r1, r4, r3, r2, -10, -14); - S2(r1, r4, r3, r2, r0); store_and_load_keys(r0, r4, r1, r2, -14, -18); - S3(r0, r4, r1, r2, r3); store_and_load_keys(r2, r3, r4, r0, -18, -22); - k -= 50; - S4(r2, r3, r4, r0, r1); store_and_load_keys(r3, r4, r0, r1, 28, 24); - S5(r3, r4, r0, r1, r2); store_and_load_keys(r2, r3, r4, r1, 24, 20); - S6(r2, r3, r4, r1, r0); store_and_load_keys(r4, r0, r3, r1, 20, 16); - S7(r4, r0, r3, r1, r2); store_and_load_keys(r2, r3, r1, r4, 16, 12); - S0(r2, r3, r1, r4, r0); store_and_load_keys(r1, r3, r4, r2, 12, 8); - S1(r1, r3, r4, r2, r0); store_and_load_keys(r0, r4, r2, r1, 8, 4); - S2(r0, r4, r2, r1, r3); store_and_load_keys(r3, r4, r0, r1, 4, 0); - S3(r3, r4, r0, r1, r2); storekeys(r1, r2, r4, r3, 0); - - return 0; -} -EXPORT_SYMBOL_GPL(__serpent_setkey); - -int serpent_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) -{ - return __serpent_setkey(crypto_tfm_ctx(tfm), key, keylen); -} -EXPORT_SYMBOL_GPL(serpent_setkey); - -void __serpent_encrypt(struct serpent_ctx *ctx, u8 *dst, const u8 *src) -{ - 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); -} -EXPORT_SYMBOL_GPL(__serpent_encrypt); - -static void serpent_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) -{ - struct serpent_ctx *ctx = crypto_tfm_ctx(tfm); - - __serpent_encrypt(ctx, dst, src); -} - -void __serpent_decrypt(struct serpent_ctx *ctx, u8 *dst, const u8 *src) -{ - const u32 *k = 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); -} -EXPORT_SYMBOL_GPL(__serpent_decrypt); - -static void serpent_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) -{ - struct serpent_ctx *ctx = crypto_tfm_ctx(tfm); - - __serpent_decrypt(ctx, dst, src); -} - -static struct crypto_alg serpent_alg = { - .cra_name = "serpent", - .cra_driver_name = "serpent-generic", - .cra_priority = 100, - .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 "); -MODULE_ALIAS("tnepres"); -MODULE_ALIAS("serpent"); -- cgit v1.2.3-59-g8ed1b