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linux-next/crypto/des.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

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39 KiB
C
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/*
* Cryptographic API.
*
* DES & Triple DES EDE Cipher Algorithms.
*
* Originally released as descore by Dana L. How <how@isl.stanford.edu>.
* Modified by Raimar Falke <rf13@inf.tu-dresden.de> for the Linux-Kernel.
* Derived from Cryptoapi and Nettle implementations, adapted for in-place
* scatterlist interface. Changed LGPL to GPL per section 3 of the LGPL.
*
* Copyright (c) 1992 Dana L. How.
* Copyright (c) Raimar Falke <rf13@inf.tu-dresden.de>
* Copyright (c) Gisle Sælensminde <gisle@ii.uib.no>
* Copyright (C) 2001 Niels Möller.
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
*
* 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/mm.h>
#include <linux/errno.h>
#include <asm/scatterlist.h>
#include <linux/crypto.h>
#define DES_KEY_SIZE 8
#define DES_EXPKEY_WORDS 32
#define DES_BLOCK_SIZE 8
#define DES3_EDE_KEY_SIZE (3 * DES_KEY_SIZE)
#define DES3_EDE_EXPKEY_WORDS (3 * DES_EXPKEY_WORDS)
#define DES3_EDE_BLOCK_SIZE DES_BLOCK_SIZE
#define ROR(d,c,o) ((d) = (d) >> (c) | (d) << (o))
struct des_ctx {
u8 iv[DES_BLOCK_SIZE];
u32 expkey[DES_EXPKEY_WORDS];
};
struct des3_ede_ctx {
u8 iv[DES_BLOCK_SIZE];
u32 expkey[DES3_EDE_EXPKEY_WORDS];
};
static const u32 des_keymap[] = {
0x02080008, 0x02082000, 0x00002008, 0x00000000,
0x02002000, 0x00080008, 0x02080000, 0x02082008,
0x00000008, 0x02000000, 0x00082000, 0x00002008,
0x00082008, 0x02002008, 0x02000008, 0x02080000,
0x00002000, 0x00082008, 0x00080008, 0x02002000,
0x02082008, 0x02000008, 0x00000000, 0x00082000,
0x02000000, 0x00080000, 0x02002008, 0x02080008,
0x00080000, 0x00002000, 0x02082000, 0x00000008,
0x00080000, 0x00002000, 0x02000008, 0x02082008,
0x00002008, 0x02000000, 0x00000000, 0x00082000,
0x02080008, 0x02002008, 0x02002000, 0x00080008,
0x02082000, 0x00000008, 0x00080008, 0x02002000,
0x02082008, 0x00080000, 0x02080000, 0x02000008,
0x00082000, 0x00002008, 0x02002008, 0x02080000,
0x00000008, 0x02082000, 0x00082008, 0x00000000,
0x02000000, 0x02080008, 0x00002000, 0x00082008,
0x08000004, 0x00020004, 0x00000000, 0x08020200,
0x00020004, 0x00000200, 0x08000204, 0x00020000,
0x00000204, 0x08020204, 0x00020200, 0x08000000,
0x08000200, 0x08000004, 0x08020000, 0x00020204,
0x00020000, 0x08000204, 0x08020004, 0x00000000,
0x00000200, 0x00000004, 0x08020200, 0x08020004,
0x08020204, 0x08020000, 0x08000000, 0x00000204,
0x00000004, 0x00020200, 0x00020204, 0x08000200,
0x00000204, 0x08000000, 0x08000200, 0x00020204,
0x08020200, 0x00020004, 0x00000000, 0x08000200,
0x08000000, 0x00000200, 0x08020004, 0x00020000,
0x00020004, 0x08020204, 0x00020200, 0x00000004,
0x08020204, 0x00020200, 0x00020000, 0x08000204,
0x08000004, 0x08020000, 0x00020204, 0x00000000,
0x00000200, 0x08000004, 0x08000204, 0x08020200,
0x08020000, 0x00000204, 0x00000004, 0x08020004,
0x80040100, 0x01000100, 0x80000000, 0x81040100,
0x00000000, 0x01040000, 0x81000100, 0x80040000,
0x01040100, 0x81000000, 0x01000000, 0x80000100,
0x81000000, 0x80040100, 0x00040000, 0x01000000,
0x81040000, 0x00040100, 0x00000100, 0x80000000,
0x00040100, 0x81000100, 0x01040000, 0x00000100,
0x80000100, 0x00000000, 0x80040000, 0x01040100,
0x01000100, 0x81040000, 0x81040100, 0x00040000,
0x81040000, 0x80000100, 0x00040000, 0x81000000,
0x00040100, 0x01000100, 0x80000000, 0x01040000,
0x81000100, 0x00000000, 0x00000100, 0x80040000,
0x00000000, 0x81040000, 0x01040100, 0x00000100,
0x01000000, 0x81040100, 0x80040100, 0x00040000,
0x81040100, 0x80000000, 0x01000100, 0x80040100,
0x80040000, 0x00040100, 0x01040000, 0x81000100,
0x80000100, 0x01000000, 0x81000000, 0x01040100,
0x04010801, 0x00000000, 0x00010800, 0x04010000,
0x04000001, 0x00000801, 0x04000800, 0x00010800,
0x00000800, 0x04010001, 0x00000001, 0x04000800,
0x00010001, 0x04010800, 0x04010000, 0x00000001,
0x00010000, 0x04000801, 0x04010001, 0x00000800,
0x00010801, 0x04000000, 0x00000000, 0x00010001,
0x04000801, 0x00010801, 0x04010800, 0x04000001,
0x04000000, 0x00010000, 0x00000801, 0x04010801,
0x00010001, 0x04010800, 0x04000800, 0x00010801,
0x04010801, 0x00010001, 0x04000001, 0x00000000,
0x04000000, 0x00000801, 0x00010000, 0x04010001,
0x00000800, 0x04000000, 0x00010801, 0x04000801,
0x04010800, 0x00000800, 0x00000000, 0x04000001,
0x00000001, 0x04010801, 0x00010800, 0x04010000,
0x04010001, 0x00010000, 0x00000801, 0x04000800,
0x04000801, 0x00000001, 0x04010000, 0x00010800,
0x00000400, 0x00000020, 0x00100020, 0x40100000,
0x40100420, 0x40000400, 0x00000420, 0x00000000,
0x00100000, 0x40100020, 0x40000020, 0x00100400,
0x40000000, 0x00100420, 0x00100400, 0x40000020,
0x40100020, 0x00000400, 0x40000400, 0x40100420,
0x00000000, 0x00100020, 0x40100000, 0x00000420,
0x40100400, 0x40000420, 0x00100420, 0x40000000,
0x40000420, 0x40100400, 0x00000020, 0x00100000,
0x40000420, 0x00100400, 0x40100400, 0x40000020,
0x00000400, 0x00000020, 0x00100000, 0x40100400,
0x40100020, 0x40000420, 0x00000420, 0x00000000,
0x00000020, 0x40100000, 0x40000000, 0x00100020,
0x00000000, 0x40100020, 0x00100020, 0x00000420,
0x40000020, 0x00000400, 0x40100420, 0x00100000,
0x00100420, 0x40000000, 0x40000400, 0x40100420,
0x40100000, 0x00100420, 0x00100400, 0x40000400,
0x00800000, 0x00001000, 0x00000040, 0x00801042,
0x00801002, 0x00800040, 0x00001042, 0x00801000,
0x00001000, 0x00000002, 0x00800002, 0x00001040,
0x00800042, 0x00801002, 0x00801040, 0x00000000,
0x00001040, 0x00800000, 0x00001002, 0x00000042,
0x00800040, 0x00001042, 0x00000000, 0x00800002,
0x00000002, 0x00800042, 0x00801042, 0x00001002,
0x00801000, 0x00000040, 0x00000042, 0x00801040,
0x00801040, 0x00800042, 0x00001002, 0x00801000,
0x00001000, 0x00000002, 0x00800002, 0x00800040,
0x00800000, 0x00001040, 0x00801042, 0x00000000,
0x00001042, 0x00800000, 0x00000040, 0x00001002,
0x00800042, 0x00000040, 0x00000000, 0x00801042,
0x00801002, 0x00801040, 0x00000042, 0x00001000,
0x00001040, 0x00801002, 0x00800040, 0x00000042,
0x00000002, 0x00001042, 0x00801000, 0x00800002,
0x10400000, 0x00404010, 0x00000010, 0x10400010,
0x10004000, 0x00400000, 0x10400010, 0x00004010,
0x00400010, 0x00004000, 0x00404000, 0x10000000,
0x10404010, 0x10000010, 0x10000000, 0x10404000,
0x00000000, 0x10004000, 0x00404010, 0x00000010,
0x10000010, 0x10404010, 0x00004000, 0x10400000,
0x10404000, 0x00400010, 0x10004010, 0x00404000,
0x00004010, 0x00000000, 0x00400000, 0x10004010,
0x00404010, 0x00000010, 0x10000000, 0x00004000,
0x10000010, 0x10004000, 0x00404000, 0x10400010,
0x00000000, 0x00404010, 0x00004010, 0x10404000,
0x10004000, 0x00400000, 0x10404010, 0x10000000,
0x10004010, 0x10400000, 0x00400000, 0x10404010,
0x00004000, 0x00400010, 0x10400010, 0x00004010,
0x00400010, 0x00000000, 0x10404000, 0x10000010,
0x10400000, 0x10004010, 0x00000010, 0x00404000,
0x00208080, 0x00008000, 0x20200000, 0x20208080,
0x00200000, 0x20008080, 0x20008000, 0x20200000,
0x20008080, 0x00208080, 0x00208000, 0x20000080,
0x20200080, 0x00200000, 0x00000000, 0x20008000,
0x00008000, 0x20000000, 0x00200080, 0x00008080,
0x20208080, 0x00208000, 0x20000080, 0x00200080,
0x20000000, 0x00000080, 0x00008080, 0x20208000,
0x00000080, 0x20200080, 0x20208000, 0x00000000,
0x00000000, 0x20208080, 0x00200080, 0x20008000,
0x00208080, 0x00008000, 0x20000080, 0x00200080,
0x20208000, 0x00000080, 0x00008080, 0x20200000,
0x20008080, 0x20000000, 0x20200000, 0x00208000,
0x20208080, 0x00008080, 0x00208000, 0x20200080,
0x00200000, 0x20000080, 0x20008000, 0x00000000,
0x00008000, 0x00200000, 0x20200080, 0x00208080,
0x20000000, 0x20208000, 0x00000080, 0x20008080,
};
static const u8 rotors[] = {
34, 13, 5, 46, 47, 18, 32, 41, 11, 53, 33, 20,
14, 36, 30, 24, 49, 2, 15, 37, 42, 50, 0, 21,
38, 48, 6, 26, 39, 4, 52, 25, 12, 27, 31, 40,
1, 17, 28, 29, 23, 51, 35, 7, 3, 22, 9, 43,
41, 20, 12, 53, 54, 25, 39, 48, 18, 31, 40, 27,
21, 43, 37, 0, 1, 9, 22, 44, 49, 2, 7, 28,
45, 55, 13, 33, 46, 11, 6, 32, 19, 34, 38, 47,
8, 24, 35, 36, 30, 3, 42, 14, 10, 29, 16, 50,
55, 34, 26, 38, 11, 39, 53, 5, 32, 45, 54, 41,
35, 2, 51, 14, 15, 23, 36, 3, 8, 16, 21, 42,
6, 12, 27, 47, 31, 25, 20, 46, 33, 48, 52, 4,
22, 7, 49, 50, 44, 17, 1, 28, 24, 43, 30, 9,
12, 48, 40, 52, 25, 53, 38, 19, 46, 6, 11, 55,
49, 16, 10, 28, 29, 37, 50, 17, 22, 30, 35, 1,
20, 26, 41, 4, 45, 39, 34, 31, 47, 5, 13, 18,
36, 21, 8, 9, 3, 0, 15, 42, 7, 2, 44, 23,
26, 5, 54, 13, 39, 38, 52, 33, 31, 20, 25, 12,
8, 30, 24, 42, 43, 51, 9, 0, 36, 44, 49, 15,
34, 40, 55, 18, 6, 53, 48, 45, 4, 19, 27, 32,
50, 35, 22, 23, 17, 14, 29, 1, 21, 16, 3, 37,
40, 19, 11, 27, 53, 52, 13, 47, 45, 34, 39, 26,
22, 44, 7, 1, 2, 10, 23, 14, 50, 3, 8, 29,
48, 54, 12, 32, 20, 38, 5, 6, 18, 33, 41, 46,
9, 49, 36, 37, 0, 28, 43, 15, 35, 30, 17, 51,
54, 33, 25, 41, 38, 13, 27, 4, 6, 48, 53, 40,
36, 3, 21, 15, 16, 24, 37, 28, 9, 17, 22, 43,
5, 11, 26, 46, 34, 52, 19, 20, 32, 47, 55, 31,
23, 8, 50, 51, 14, 42, 2, 29, 49, 44, 0, 10,
11, 47, 39, 55, 52, 27, 41, 18, 20, 5, 38, 54,
50, 17, 35, 29, 30, 7, 51, 42, 23, 0, 36, 2,
19, 25, 40, 31, 48, 13, 33, 34, 46, 4, 12, 45,
37, 22, 9, 10, 28, 1, 16, 43, 8, 3, 14, 24,
18, 54, 46, 5, 6, 34, 48, 25, 27, 12, 45, 4,
2, 24, 42, 36, 37, 14, 3, 49, 30, 7, 43, 9,
26, 32, 47, 38, 55, 20, 40, 41, 53, 11, 19, 52,
44, 29, 16, 17, 35, 8, 23, 50, 15, 10, 21, 0,
32, 11, 31, 19, 20, 48, 5, 39, 41, 26, 6, 18,
16, 7, 1, 50, 51, 28, 17, 8, 44, 21, 2, 23,
40, 46, 4, 52, 12, 34, 54, 55, 38, 25, 33, 13,
3, 43, 30, 0, 49, 22, 37, 9, 29, 24, 35, 14,
46, 25, 45, 33, 34, 5, 19, 53, 55, 40, 20, 32,
30, 21, 15, 9, 10, 42, 0, 22, 3, 35, 16, 37,
54, 31, 18, 13, 26, 48, 11, 12, 52, 39, 47, 27,
17, 2, 44, 14, 8, 36, 51, 23, 43, 7, 49, 28,
31, 39, 6, 47, 48, 19, 33, 38, 12, 54, 34, 46,
44, 35, 29, 23, 24, 1, 14, 36, 17, 49, 30, 51,
11, 45, 32, 27, 40, 5, 25, 26, 13, 53, 4, 41,
0, 16, 3, 28, 22, 50, 10, 37, 2, 21, 8, 42,
45, 53, 20, 4, 5, 33, 47, 52, 26, 11, 48, 31,
3, 49, 43, 37, 7, 15, 28, 50, 0, 8, 44, 10,
25, 6, 46, 41, 54, 19, 39, 40, 27, 38, 18, 55,
14, 30, 17, 42, 36, 9, 24, 51, 16, 35, 22, 1,
6, 38, 34, 18, 19, 47, 4, 13, 40, 25, 5, 45,
17, 8, 2, 51, 21, 29, 42, 9, 14, 22, 3, 24,
39, 20, 31, 55, 11, 33, 53, 54, 41, 52, 32, 12,
28, 44, 0, 1, 50, 23, 7, 10, 30, 49, 36, 15,
20, 52, 48, 32, 33, 4, 18, 27, 54, 39, 19, 6,
0, 22, 16, 10, 35, 43, 1, 23, 28, 36, 17, 7,
53, 34, 45, 12, 25, 47, 38, 11, 55, 13, 46, 26,
42, 3, 14, 15, 9, 37, 21, 24, 44, 8, 50, 29,
27, 6, 55, 39, 40, 11, 25, 34, 4, 46, 26, 13,
7, 29, 23, 17, 42, 50, 8, 30, 35, 43, 24, 14,
31, 41, 52, 19, 32, 54, 45, 18, 5, 20, 53, 33,
49, 10, 21, 22, 16, 44, 28, 0, 51, 15, 2, 36,
};
static const u8 parity[] = {
8,1,0,8,0,8,8,0,0,8,8,0,8,0,2,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,3,
0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
4,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,5,0,8,0,8,8,0,0,8,8,0,8,0,6,8,
};
static void des_small_fips_encrypt(u32 *expkey, u8 *dst, const u8 *src)
{
u32 x, y, z;
x = src[7];
x <<= 8;
x |= src[6];
x <<= 8;
x |= src[5];
x <<= 8;
x |= src[4];
y = src[3];
y <<= 8;
y |= src[2];
y <<= 8;
y |= src[1];
y <<= 8;
y |= src[0];
z = ((x >> 004) ^ y) & 0x0F0F0F0FL;
x ^= z << 004;
y ^= z;
z = ((y >> 020) ^ x) & 0x0000FFFFL;
y ^= z << 020;
x ^= z;
z = ((x >> 002) ^ y) & 0x33333333L;
x ^= z << 002;
y ^= z;
z = ((y >> 010) ^ x) & 0x00FF00FFL;
y ^= z << 010;
x ^= z;
x = x >> 1 | x << 31;
z = (x ^ y) & 0x55555555L;
y ^= z;
x ^= z;
y = y >> 1 | y << 31;
z = expkey[0];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[1];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[2];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[3];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[4];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[5];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[6];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[7];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[8];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[9];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[10];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[11];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[12];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[13];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[14];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[15];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[16];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[17];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[18];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[19];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[20];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[21];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[22];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[23];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[24];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[25];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[26];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[27];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[28];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[29];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[30];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[31];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
x = x << 1 | x >> 31;
z = (x ^ y) & 0x55555555L;
y ^= z;
x ^= z;
y = y << 1 | y >> 31;
z = ((x >> 010) ^ y) & 0x00FF00FFL;
x ^= z << 010;
y ^= z;
z = ((y >> 002) ^ x) & 0x33333333L;
y ^= z << 002;
x ^= z;
z = ((x >> 020) ^ y) & 0x0000FFFFL;
x ^= z << 020;
y ^= z;
z = ((y >> 004) ^ x) & 0x0F0F0F0FL;
y ^= z << 004;
x ^= z;
dst[0] = x;
x >>= 8;
dst[1] = x;
x >>= 8;
dst[2] = x;
x >>= 8;
dst[3] = x;
dst[4] = y;
y >>= 8;
dst[5] = y;
y >>= 8;
dst[6] = y;
y >>= 8;
dst[7] = y;
}
static void des_small_fips_decrypt(u32 *expkey, u8 *dst, const u8 *src)
{
u32 x, y, z;
x = src[7];
x <<= 8;
x |= src[6];
x <<= 8;
x |= src[5];
x <<= 8;
x |= src[4];
y = src[3];
y <<= 8;
y |= src[2];
y <<= 8;
y |= src[1];
y <<= 8;
y |= src[0];
z = ((x >> 004) ^ y) & 0x0F0F0F0FL;
x ^= z << 004;
y ^= z;
z = ((y >> 020) ^ x) & 0x0000FFFFL;
y ^= z << 020;
x ^= z;
z = ((x >> 002) ^ y) & 0x33333333L;
x ^= z << 002;
y ^= z;
z = ((y >> 010) ^ x) & 0x00FF00FFL;
y ^= z << 010;
x ^= z;
x = x >> 1 | x << 31;
z = (x ^ y) & 0x55555555L;
y ^= z;
x ^= z;
y = y >> 1 | y << 31;
z = expkey[31];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[30];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[29];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[28];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[27];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[26];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[25];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[24];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[23];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[22];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[21];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[20];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[19];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[18];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[17];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[16];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[15];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[14];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[13];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[12];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[11];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[10];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[9];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[8];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[7];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[6];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[5];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[4];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[3];
z ^= y;
z = z << 4 | z >> 28;
x ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[2];
z ^= y;
x ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
x ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
z = expkey[1];
z ^= x;
z = z << 4 | z >> 28;
y ^= * (u32 *) ((u8 *) (des_keymap + 448) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 384) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 320) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 256) + (0xFC & z));
z = expkey[0];
z ^= x;
y ^= * (u32 *) ((u8 *) (des_keymap + 192) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 128) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) (des_keymap + 64) + (0xFC & z));
z >>= 8;
y ^= * (u32 *) ((u8 *) des_keymap + (0xFC & z));
x = x << 1 | x >> 31;
z = (x ^ y) & 0x55555555L;
y ^= z;
x ^= z;
y = y << 1 | y >> 31;
z = ((x >> 010) ^ y) & 0x00FF00FFL;
x ^= z << 010;
y ^= z;
z = ((y >> 002) ^ x) & 0x33333333L;
y ^= z << 002;
x ^= z;
z = ((x >> 020) ^ y) & 0x0000FFFFL;
x ^= z << 020;
y ^= z;
z = ((y >> 004) ^ x) & 0x0F0F0F0FL;
y ^= z << 004;
x ^= z;
dst[0] = x;
x >>= 8;
dst[1] = x;
x >>= 8;
dst[2] = x;
x >>= 8;
dst[3] = x;
dst[4] = y;
y >>= 8;
dst[5] = y;
y >>= 8;
dst[6] = y;
y >>= 8;
dst[7] = y;
}
/*
* RFC2451: Weak key checks SHOULD be performed.
*/
static int setkey(u32 *expkey, const u8 *key, unsigned int keylen, u32 *flags)
{
const u8 *k;
u8 *b0, *b1;
u32 n, w;
u8 bits0[56], bits1[56];
n = parity[key[0]]; n <<= 4;
n |= parity[key[1]]; n <<= 4;
n |= parity[key[2]]; n <<= 4;
n |= parity[key[3]]; n <<= 4;
n |= parity[key[4]]; n <<= 4;
n |= parity[key[5]]; n <<= 4;
n |= parity[key[6]]; n <<= 4;
n |= parity[key[7]];
w = 0x88888888L;
if ((*flags & CRYPTO_TFM_REQ_WEAK_KEY)
&& !((n - (w >> 3)) & w)) { /* 1 in 10^10 keys passes this test */
if (n < 0x41415151) {
if (n < 0x31312121) {
if (n < 0x14141515) {
/* 01 01 01 01 01 01 01 01 */
if (n == 0x11111111) goto weak;
/* 01 1F 01 1F 01 0E 01 0E */
if (n == 0x13131212) goto weak;
} else {
/* 01 E0 01 E0 01 F1 01 F1 */
if (n == 0x14141515) goto weak;
/* 01 FE 01 FE 01 FE 01 FE */
if (n == 0x16161616) goto weak;
}
} else {
if (n < 0x34342525) {
/* 1F 01 1F 01 0E 01 0E 01 */
if (n == 0x31312121) goto weak;
/* 1F 1F 1F 1F 0E 0E 0E 0E (?) */
if (n == 0x33332222) goto weak;
} else {
/* 1F E0 1F E0 0E F1 0E F1 */
if (n == 0x34342525) goto weak;
/* 1F FE 1F FE 0E FE 0E FE */
if (n == 0x36362626) goto weak;
}
}
} else {
if (n < 0x61616161) {
if (n < 0x44445555) {
/* E0 01 E0 01 F1 01 F1 01 */
if (n == 0x41415151) goto weak;
/* E0 1F E0 1F F1 0E F1 0E */
if (n == 0x43435252) goto weak;
} else {
/* E0 E0 E0 E0 F1 F1 F1 F1 (?) */
if (n == 0x44445555) goto weak;
/* E0 FE E0 FE F1 FE F1 FE */
if (n == 0x46465656) goto weak;
}
} else {
if (n < 0x64646565) {
/* FE 01 FE 01 FE 01 FE 01 */
if (n == 0x61616161) goto weak;
/* FE 1F FE 1F FE 0E FE 0E */
if (n == 0x63636262) goto weak;
} else {
/* FE E0 FE E0 FE F1 FE F1 */
if (n == 0x64646565) goto weak;
/* FE FE FE FE FE FE FE FE */
if (n == 0x66666666) goto weak;
}
}
}
goto not_weak;
weak:
*flags |= CRYPTO_TFM_RES_WEAK_KEY;
return -EINVAL;
}
not_weak:
/* explode the bits */
n = 56;
b0 = bits0;
b1 = bits1;
do {
w = (256 | *key++) << 2;
do {
--n;
b1[n] = 8 & w;
w >>= 1;
b0[n] = 4 & w;
} while ( w >= 16 );
} while ( n );
/* put the bits in the correct places */
n = 16;
k = rotors;
do {
w = (b1[k[ 0 ]] | b0[k[ 1 ]]) << 4;
w |= (b1[k[ 2 ]] | b0[k[ 3 ]]) << 2;
w |= b1[k[ 4 ]] | b0[k[ 5 ]];
w <<= 8;
w |= (b1[k[ 6 ]] | b0[k[ 7 ]]) << 4;
w |= (b1[k[ 8 ]] | b0[k[ 9 ]]) << 2;
w |= b1[k[10 ]] | b0[k[11 ]];
w <<= 8;
w |= (b1[k[12 ]] | b0[k[13 ]]) << 4;
w |= (b1[k[14 ]] | b0[k[15 ]]) << 2;
w |= b1[k[16 ]] | b0[k[17 ]];
w <<= 8;
w |= (b1[k[18 ]] | b0[k[19 ]]) << 4;
w |= (b1[k[20 ]] | b0[k[21 ]]) << 2;
w |= b1[k[22 ]] | b0[k[23 ]];
expkey[0] = w;
w = (b1[k[ 0+24]] | b0[k[ 1+24]]) << 4;
w |= (b1[k[ 2+24]] | b0[k[ 3+24]]) << 2;
w |= b1[k[ 4+24]] | b0[k[ 5+24]];
w <<= 8;
w |= (b1[k[ 6+24]] | b0[k[ 7+24]]) << 4;
w |= (b1[k[ 8+24]] | b0[k[ 9+24]]) << 2;
w |= b1[k[10+24]] | b0[k[11+24]];
w <<= 8;
w |= (b1[k[12+24]] | b0[k[13+24]]) << 4;
w |= (b1[k[14+24]] | b0[k[15+24]]) << 2;
w |= b1[k[16+24]] | b0[k[17+24]];
w <<= 8;
w |= (b1[k[18+24]] | b0[k[19+24]]) << 4;
w |= (b1[k[20+24]] | b0[k[21+24]]) << 2;
w |= b1[k[22+24]] | b0[k[23+24]];
ROR(w, 4, 28); /* could be eliminated */
expkey[1] = w;
k += 48;
expkey += 2;
} while (--n);
return 0;
}
static int des_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
{
return setkey(((struct des_ctx *)ctx)->expkey, key, keylen, flags);
}
static void des_encrypt(void *ctx, u8 *dst, const u8 *src)
{
des_small_fips_encrypt(((struct des_ctx *)ctx)->expkey, dst, src);
}
static void des_decrypt(void *ctx, u8 *dst, const u8 *src)
{
des_small_fips_decrypt(((struct des_ctx *)ctx)->expkey, dst, src);
}
/*
* RFC2451:
*
* For DES-EDE3, there is no known need to reject weak or
* complementation keys. Any weakness is obviated by the use of
* multiple keys.
*
* However, if the first two or last two independent 64-bit keys are
* equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the
* same as DES. Implementers MUST reject keys that exhibit this
* property.
*
*/
static int des3_ede_setkey(void *ctx, const u8 *key,
unsigned int keylen, u32 *flags)
{
unsigned int i, off;
struct des3_ede_ctx *dctx = ctx;
if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) &&
memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2],
DES_KEY_SIZE))) {
*flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED;
return -EINVAL;
}
for (i = 0, off = 0; i < 3; i++, off += DES_EXPKEY_WORDS,
key += DES_KEY_SIZE) {
int ret = setkey(&dctx->expkey[off], key, DES_KEY_SIZE, flags);
if (ret < 0)
return ret;
}
return 0;
}
static void des3_ede_encrypt(void *ctx, u8 *dst, const u8 *src)
{
struct des3_ede_ctx *dctx = ctx;
des_small_fips_encrypt(dctx->expkey, dst, src);
des_small_fips_decrypt(&dctx->expkey[DES_EXPKEY_WORDS], dst, dst);
des_small_fips_encrypt(&dctx->expkey[DES_EXPKEY_WORDS * 2], dst, dst);
}
static void des3_ede_decrypt(void *ctx, u8 *dst, const u8 *src)
{
struct des3_ede_ctx *dctx = ctx;
des_small_fips_decrypt(&dctx->expkey[DES_EXPKEY_WORDS * 2], dst, src);
des_small_fips_encrypt(&dctx->expkey[DES_EXPKEY_WORDS], dst, dst);
des_small_fips_decrypt(dctx->expkey, dst, dst);
}
static struct crypto_alg des_alg = {
.cra_name = "des",
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct des_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(des_alg.cra_list),
.cra_u = { .cipher = {
.cia_min_keysize = DES_KEY_SIZE,
.cia_max_keysize = DES_KEY_SIZE,
.cia_setkey = des_setkey,
.cia_encrypt = des_encrypt,
.cia_decrypt = des_decrypt } }
};
static struct crypto_alg des3_ede_alg = {
.cra_name = "des3_ede",
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct des3_ede_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(des3_ede_alg.cra_list),
.cra_u = { .cipher = {
.cia_min_keysize = DES3_EDE_KEY_SIZE,
.cia_max_keysize = DES3_EDE_KEY_SIZE,
.cia_setkey = des3_ede_setkey,
.cia_encrypt = des3_ede_encrypt,
.cia_decrypt = des3_ede_decrypt } }
};
MODULE_ALIAS("des3_ede");
static int __init init(void)
{
int ret = 0;
ret = crypto_register_alg(&des_alg);
if (ret < 0)
goto out;
ret = crypto_register_alg(&des3_ede_alg);
if (ret < 0)
crypto_unregister_alg(&des_alg);
out:
return ret;
}
static void __exit fini(void)
{
crypto_unregister_alg(&des3_ede_alg);
crypto_unregister_alg(&des_alg);
}
module_init(init);
module_exit(fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms");
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