diff options
Diffstat (limited to 'crypto/des.c')
| -rw-r--r-- | crypto/des.c | 2003 |
1 files changed, 854 insertions, 1149 deletions
diff --git a/crypto/des.c b/crypto/des.c index fc5d1b61a0e9..a3c863dddded 100644 --- a/crypto/des.c +++ b/crypto/des.c @@ -1,18 +1,9 @@ -/* +/* * 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> + * Copyright (c) 2005 Dag Arne Osvik <da@osvik.no> * * 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 @@ -20,11 +11,11 @@ * (at your option) any later version. * */ + +#include <linux/bitops.h> #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 @@ -35,7 +26,8 @@ #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)) +#define ROL(x, r) ((x) = rol32((x), (r))) +#define ROR(x, r) ((x) = ror32((x), (r))) struct des_ctx { u32 expkey[DES_EXPKEY_WORDS]; @@ -45,1145 +37,815 @@ struct des3_ede_ctx { 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, +/* Lookup tables for key expansion */ + +static const u8 pc1[256] = { + 0x00, 0x00, 0x40, 0x04, 0x10, 0x10, 0x50, 0x14, + 0x04, 0x40, 0x44, 0x44, 0x14, 0x50, 0x54, 0x54, + 0x02, 0x02, 0x42, 0x06, 0x12, 0x12, 0x52, 0x16, + 0x06, 0x42, 0x46, 0x46, 0x16, 0x52, 0x56, 0x56, + 0x80, 0x08, 0xc0, 0x0c, 0x90, 0x18, 0xd0, 0x1c, + 0x84, 0x48, 0xc4, 0x4c, 0x94, 0x58, 0xd4, 0x5c, + 0x82, 0x0a, 0xc2, 0x0e, 0x92, 0x1a, 0xd2, 0x1e, + 0x86, 0x4a, 0xc6, 0x4e, 0x96, 0x5a, 0xd6, 0x5e, + 0x20, 0x20, 0x60, 0x24, 0x30, 0x30, 0x70, 0x34, + 0x24, 0x60, 0x64, 0x64, 0x34, 0x70, 0x74, 0x74, + 0x22, 0x22, 0x62, 0x26, 0x32, 0x32, 0x72, 0x36, + 0x26, 0x62, 0x66, 0x66, 0x36, 0x72, 0x76, 0x76, + 0xa0, 0x28, 0xe0, 0x2c, 0xb0, 0x38, 0xf0, 0x3c, + 0xa4, 0x68, 0xe4, 0x6c, 0xb4, 0x78, 0xf4, 0x7c, + 0xa2, 0x2a, 0xe2, 0x2e, 0xb2, 0x3a, 0xf2, 0x3e, + 0xa6, 0x6a, 0xe6, 0x6e, 0xb6, 0x7a, 0xf6, 0x7e, + 0x08, 0x80, 0x48, 0x84, 0x18, 0x90, 0x58, 0x94, + 0x0c, 0xc0, 0x4c, 0xc4, 0x1c, 0xd0, 0x5c, 0xd4, + 0x0a, 0x82, 0x4a, 0x86, 0x1a, 0x92, 0x5a, 0x96, + 0x0e, 0xc2, 0x4e, 0xc6, 0x1e, 0xd2, 0x5e, 0xd6, + 0x88, 0x88, 0xc8, 0x8c, 0x98, 0x98, 0xd8, 0x9c, + 0x8c, 0xc8, 0xcc, 0xcc, 0x9c, 0xd8, 0xdc, 0xdc, + 0x8a, 0x8a, 0xca, 0x8e, 0x9a, 0x9a, 0xda, 0x9e, + 0x8e, 0xca, 0xce, 0xce, 0x9e, 0xda, 0xde, 0xde, + 0x28, 0xa0, 0x68, 0xa4, 0x38, 0xb0, 0x78, 0xb4, + 0x2c, 0xe0, 0x6c, 0xe4, 0x3c, 0xf0, 0x7c, 0xf4, + 0x2a, 0xa2, 0x6a, 0xa6, 0x3a, 0xb2, 0x7a, 0xb6, + 0x2e, 0xe2, 0x6e, 0xe6, 0x3e, 0xf2, 0x7e, 0xf6, + 0xa8, 0xa8, 0xe8, 0xac, 0xb8, 0xb8, 0xf8, 0xbc, + 0xac, 0xe8, 0xec, 0xec, 0xbc, 0xf8, 0xfc, 0xfc, + 0xaa, 0xaa, 0xea, 0xae, 0xba, 0xba, 0xfa, 0xbe, + 0xae, 0xea, 0xee, 0xee, 0xbe, 0xfa, 0xfe, 0xfe }; -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 rs[256] = { + 0x00, 0x00, 0x80, 0x80, 0x02, 0x02, 0x82, 0x82, + 0x04, 0x04, 0x84, 0x84, 0x06, 0x06, 0x86, 0x86, + 0x08, 0x08, 0x88, 0x88, 0x0a, 0x0a, 0x8a, 0x8a, + 0x0c, 0x0c, 0x8c, 0x8c, 0x0e, 0x0e, 0x8e, 0x8e, + 0x10, 0x10, 0x90, 0x90, 0x12, 0x12, 0x92, 0x92, + 0x14, 0x14, 0x94, 0x94, 0x16, 0x16, 0x96, 0x96, + 0x18, 0x18, 0x98, 0x98, 0x1a, 0x1a, 0x9a, 0x9a, + 0x1c, 0x1c, 0x9c, 0x9c, 0x1e, 0x1e, 0x9e, 0x9e, + 0x20, 0x20, 0xa0, 0xa0, 0x22, 0x22, 0xa2, 0xa2, + 0x24, 0x24, 0xa4, 0xa4, 0x26, 0x26, 0xa6, 0xa6, + 0x28, 0x28, 0xa8, 0xa8, 0x2a, 0x2a, 0xaa, 0xaa, + 0x2c, 0x2c, 0xac, 0xac, 0x2e, 0x2e, 0xae, 0xae, + 0x30, 0x30, 0xb0, 0xb0, 0x32, 0x32, 0xb2, 0xb2, + 0x34, 0x34, 0xb4, 0xb4, 0x36, 0x36, 0xb6, 0xb6, + 0x38, 0x38, 0xb8, 0xb8, 0x3a, 0x3a, 0xba, 0xba, + 0x3c, 0x3c, 0xbc, 0xbc, 0x3e, 0x3e, 0xbe, 0xbe, + 0x40, 0x40, 0xc0, 0xc0, 0x42, 0x42, 0xc2, 0xc2, + 0x44, 0x44, 0xc4, 0xc4, 0x46, 0x46, 0xc6, 0xc6, + 0x48, 0x48, 0xc8, 0xc8, 0x4a, 0x4a, 0xca, 0xca, + 0x4c, 0x4c, 0xcc, 0xcc, 0x4e, 0x4e, 0xce, 0xce, + 0x50, 0x50, 0xd0, 0xd0, 0x52, 0x52, 0xd2, 0xd2, + 0x54, 0x54, 0xd4, 0xd4, 0x56, 0x56, 0xd6, 0xd6, + 0x58, 0x58, 0xd8, 0xd8, 0x5a, 0x5a, 0xda, 0xda, + 0x5c, 0x5c, 0xdc, 0xdc, 0x5e, 0x5e, 0xde, 0xde, + 0x60, 0x60, 0xe0, 0xe0, 0x62, 0x62, 0xe2, 0xe2, + 0x64, 0x64, 0xe4, 0xe4, 0x66, 0x66, 0xe6, 0xe6, + 0x68, 0x68, 0xe8, 0xe8, 0x6a, 0x6a, 0xea, 0xea, + 0x6c, 0x6c, 0xec, 0xec, 0x6e, 0x6e, 0xee, 0xee, + 0x70, 0x70, 0xf0, 0xf0, 0x72, 0x72, 0xf2, 0xf2, + 0x74, 0x74, 0xf4, 0xf4, 0x76, 0x76, 0xf6, 0xf6, + 0x78, 0x78, 0xf8, 0xf8, 0x7a, 0x7a, 0xfa, 0xfa, + 0x7c, 0x7c, 0xfc, 0xfc, 0x7e, 0x7e, 0xfe, 0xfe }; -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 const u32 pc2[1024] = { + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00040000, 0x00000000, 0x04000000, 0x00100000, + 0x00400000, 0x00000008, 0x00000800, 0x40000000, + 0x00440000, 0x00000008, 0x04000800, 0x40100000, + 0x00000400, 0x00000020, 0x08000000, 0x00000100, + 0x00040400, 0x00000020, 0x0c000000, 0x00100100, + 0x00400400, 0x00000028, 0x08000800, 0x40000100, + 0x00440400, 0x00000028, 0x0c000800, 0x40100100, + 0x80000000, 0x00000010, 0x00000000, 0x00800000, + 0x80040000, 0x00000010, 0x04000000, 0x00900000, + 0x80400000, 0x00000018, 0x00000800, 0x40800000, + 0x80440000, 0x00000018, 0x04000800, 0x40900000, + 0x80000400, 0x00000030, 0x08000000, 0x00800100, + 0x80040400, 0x00000030, 0x0c000000, 0x00900100, + 0x80400400, 0x00000038, 0x08000800, 0x40800100, + 0x80440400, 0x00000038, 0x0c000800, 0x40900100, + 0x10000000, 0x00000000, 0x00200000, 0x00001000, + 0x10040000, 0x00000000, 0x04200000, 0x00101000, + 0x10400000, 0x00000008, 0x00200800, 0x40001000, + 0x10440000, 0x00000008, 0x04200800, 0x40101000, + 0x10000400, 0x00000020, 0x08200000, 0x00001100, + 0x10040400, 0x00000020, 0x0c200000, 0x00101100, + 0x10400400, 0x00000028, 0x08200800, 0x40001100, + 0x10440400, 0x00000028, 0x0c200800, 0x40101100, + 0x90000000, 0x00000010, 0x00200000, 0x00801000, + 0x90040000, 0x00000010, 0x04200000, 0x00901000, + 0x90400000, 0x00000018, 0x00200800, 0x40801000, + 0x90440000, 0x00000018, 0x04200800, 0x40901000, + 0x90000400, 0x00000030, 0x08200000, 0x00801100, + 0x90040400, 0x00000030, 0x0c200000, 0x00901100, + 0x90400400, 0x00000038, 0x08200800, 0x40801100, + 0x90440400, 0x00000038, 0x0c200800, 0x40901100, + 0x00000200, 0x00080000, 0x00000000, 0x00000004, + 0x00040200, 0x00080000, 0x04000000, 0x00100004, + 0x00400200, 0x00080008, 0x00000800, 0x40000004, + 0x00440200, 0x00080008, 0x04000800, 0x40100004, + 0x00000600, 0x00080020, 0x08000000, 0x00000104, + 0x00040600, 0x00080020, 0x0c000000, 0x00100104, + 0x00400600, 0x00080028, 0x08000800, 0x40000104, + 0x00440600, 0x00080028, 0x0c000800, 0x40100104, + 0x80000200, 0x00080010, 0x00000000, 0x00800004, + 0x80040200, 0x00080010, 0x04000000, 0x00900004, + 0x80400200, 0x00080018, 0x00000800, 0x40800004, + 0x80440200, 0x00080018, 0x04000800, 0x40900004, + 0x80000600, 0x00080030, 0x08000000, 0x00800104, + 0x80040600, 0x00080030, 0x0c000000, 0x00900104, + 0x80400600, 0x00080038, 0x08000800, 0x40800104, + 0x80440600, 0x00080038, 0x0c000800, 0x40900104, + 0x10000200, 0x00080000, 0x00200000, 0x00001004, + 0x10040200, 0x00080000, 0x04200000, 0x00101004, + 0x10400200, 0x00080008, 0x00200800, 0x40001004, + 0x10440200, 0x00080008, 0x04200800, 0x40101004, + 0x10000600, 0x00080020, 0x08200000, 0x00001104, + 0x10040600, 0x00080020, 0x0c200000, 0x00101104, + 0x10400600, 0x00080028, 0x08200800, 0x40001104, + 0x10440600, 0x00080028, 0x0c200800, 0x40101104, + 0x90000200, 0x00080010, 0x00200000, 0x00801004, + 0x90040200, 0x00080010, 0x04200000, 0x00901004, + 0x90400200, 0x00080018, 0x00200800, 0x40801004, + 0x90440200, 0x00080018, 0x04200800, 0x40901004, + 0x90000600, 0x00080030, 0x08200000, 0x00801104, + 0x90040600, 0x00080030, 0x0c200000, 0x00901104, + 0x90400600, 0x00080038, 0x08200800, 0x40801104, + 0x90440600, 0x00080038, 0x0c200800, 0x40901104, + 0x00000002, 0x00002000, 0x20000000, 0x00000001, + 0x00040002, 0x00002000, 0x24000000, 0x00100001, + 0x00400002, 0x00002008, 0x20000800, 0x40000001, + 0x00440002, 0x00002008, 0x24000800, 0x40100001, + 0x00000402, 0x00002020, 0x28000000, 0x00000101, + 0x00040402, 0x00002020, 0x2c000000, 0x00100101, + 0x00400402, 0x00002028, 0x28000800, 0x40000101, + 0x00440402, 0x00002028, 0x2c000800, 0x40100101, + 0x80000002, 0x00002010, 0x20000000, 0x00800001, + 0x80040002, 0x00002010, 0x24000000, 0x00900001, + 0x80400002, 0x00002018, 0x20000800, 0x40800001, + 0x80440002, 0x00002018, 0x24000800, 0x40900001, + 0x80000402, 0x00002030, 0x28000000, 0x00800101, + 0x80040402, 0x00002030, 0x2c000000, 0x00900101, + 0x80400402, 0x00002038, 0x28000800, 0x40800101, + 0x80440402, 0x00002038, 0x2c000800, 0x40900101, + 0x10000002, 0x00002000, 0x20200000, 0x00001001, + 0x10040002, 0x00002000, 0x24200000, 0x00101001, + 0x10400002, 0x00002008, 0x20200800, 0x40001001, + 0x10440002, 0x00002008, 0x24200800, 0x40101001, + 0x10000402, 0x00002020, 0x28200000, 0x00001101, + 0x10040402, 0x00002020, 0x2c200000, 0x00101101, + 0x10400402, 0x00002028, 0x28200800, 0x40001101, + 0x10440402, 0x00002028, 0x2c200800, 0x40101101, + 0x90000002, 0x00002010, 0x20200000, 0x00801001, + 0x90040002, 0x00002010, 0x24200000, 0x00901001, + 0x90400002, 0x00002018, 0x20200800, 0x40801001, + 0x90440002, 0x00002018, 0x24200800, 0x40901001, + 0x90000402, 0x00002030, 0x28200000, 0x00801101, + 0x90040402, 0x00002030, 0x2c200000, 0x00901101, + 0x90400402, 0x00002038, 0x28200800, 0x40801101, + 0x90440402, 0x00002038, 0x2c200800, 0x40901101, + 0x00000202, 0x00082000, 0x20000000, 0x00000005, + 0x00040202, 0x00082000, 0x24000000, 0x00100005, + 0x00400202, 0x00082008, 0x20000800, 0x40000005, + 0x00440202, 0x00082008, 0x24000800, 0x40100005, + 0x00000602, 0x00082020, 0x28000000, 0x00000105, + 0x00040602, 0x00082020, 0x2c000000, 0x00100105, + 0x00400602, 0x00082028, 0x28000800, 0x40000105, + 0x00440602, 0x00082028, 0x2c000800, 0x40100105, + 0x80000202, 0x00082010, 0x20000000, 0x00800005, + 0x80040202, 0x00082010, 0x24000000, 0x00900005, + 0x80400202, 0x00082018, 0x20000800, 0x40800005, + 0x80440202, 0x00082018, 0x24000800, 0x40900005, + 0x80000602, 0x00082030, 0x28000000, 0x00800105, + 0x80040602, 0x00082030, 0x2c000000, 0x00900105, + 0x80400602, 0x00082038, 0x28000800, 0x40800105, + 0x80440602, 0x00082038, 0x2c000800, 0x40900105, + 0x10000202, 0x00082000, 0x20200000, 0x00001005, + 0x10040202, 0x00082000, 0x24200000, 0x00101005, + 0x10400202, 0x00082008, 0x20200800, 0x40001005, + 0x10440202, 0x00082008, 0x24200800, 0x40101005, + 0x10000602, 0x00082020, 0x28200000, 0x00001105, + 0x10040602, 0x00082020, 0x2c200000, 0x00101105, + 0x10400602, 0x00082028, 0x28200800, 0x40001105, + 0x10440602, 0x00082028, 0x2c200800, 0x40101105, + 0x90000202, 0x00082010, 0x20200000, 0x00801005, + 0x90040202, 0x00082010, 0x24200000, 0x00901005, + 0x90400202, 0x00082018, 0x20200800, 0x40801005, + 0x90440202, 0x00082018, 0x24200800, 0x40901005, + 0x90000602, 0x00082030, 0x28200000, 0x00801105, + 0x90040602, 0x00082030, 0x2c200000, 0x00901105, + 0x90400602, 0x00082038, 0x28200800, 0x40801105, + 0x90440602, 0x00082038, 0x2c200800, 0x40901105, + + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000008, 0x00080000, 0x10000000, + 0x02000000, 0x00000000, 0x00000080, 0x00001000, + 0x02000000, 0x00000008, 0x00080080, 0x10001000, + 0x00004000, 0x00000000, 0x00000040, 0x00040000, + 0x00004000, 0x00000008, 0x00080040, 0x10040000, + 0x02004000, 0x00000000, 0x000000c0, 0x00041000, + 0x02004000, 0x00000008, 0x000800c0, 0x10041000, + 0x00020000, 0x00008000, 0x08000000, 0x00200000, + 0x00020000, 0x00008008, 0x08080000, 0x10200000, + 0x02020000, 0x00008000, 0x08000080, 0x00201000, + 0x02020000, 0x00008008, 0x08080080, 0x10201000, + 0x00024000, 0x00008000, 0x08000040, 0x00240000, + 0x00024000, 0x00008008, 0x08080040, 0x10240000, + 0x02024000, 0x00008000, 0x080000c0, 0x00241000, + 0x02024000, 0x00008008, 0x080800c0, 0x10241000, + 0x00000000, 0x01000000, 0x00002000, 0x00000020, + 0x00000000, 0x01000008, 0x00082000, 0x10000020, + 0x02000000, 0x01000000, 0x00002080, 0x00001020, + 0x02000000, 0x01000008, 0x00082080, 0x10001020, + 0x00004000, 0x01000000, 0x00002040, 0x00040020, + 0x00004000, 0x01000008, 0x00082040, 0x10040020, + 0x02004000, 0x01000000, 0x000020c0, 0x00041020, + 0x02004000, 0x01000008, 0x000820c0, 0x10041020, + 0x00020000, 0x01008000, 0x08002000, 0x00200020, + 0x00020000, 0x01008008, 0x08082000, 0x10200020, + 0x02020000, 0x01008000, 0x08002080, 0x00201020, + 0x02020000, 0x01008008, 0x08082080, 0x10201020, + 0x00024000, 0x01008000, 0x08002040, 0x00240020, + 0x00024000, 0x01008008, 0x08082040, 0x10240020, + 0x02024000, 0x01008000, 0x080020c0, 0x00241020, + 0x02024000, 0x01008008, 0x080820c0, 0x10241020, + 0x00000400, 0x04000000, 0x00100000, 0x00000004, + 0x00000400, 0x04000008, 0x00180000, 0x10000004, + 0x02000400, 0x04000000, 0x00100080, 0x00001004, + 0x02000400, 0x04000008, 0x00180080, 0x10001004, + 0x00004400, 0x04000000, 0x00100040, 0x00040004, + 0x00004400, 0x04000008, 0x00180040, 0x10040004, + 0x02004400, 0x04000000, 0x001000c0, 0x00041004, + 0x02004400, 0x04000008, 0x001800c0, 0x10041004, + 0x00020400, 0x04008000, 0x08100000, 0x00200004, + 0x00020400, 0x04008008, 0x08180000, 0x10200004, + 0x02020400, 0x04008000, 0x08100080, 0x00201004, + 0x02020400, 0x04008008, 0x08180080, 0x10201004, + 0x00024400, 0x04008000, 0x08100040, 0x00240004, + 0x00024400, 0x04008008, 0x08180040, 0x10240004, + 0x02024400, 0x04008000, 0x081000c0, 0x00241004, + 0x02024400, 0x04008008, 0x081800c0, 0x10241004, + 0x00000400, 0x05000000, 0x00102000, 0x00000024, + 0x00000400, 0x05000008, 0x00182000, 0x10000024, + 0x02000400, 0x05000000, 0x00102080, 0x00001024, + 0x02000400, 0x05000008, 0x00182080, 0x10001024, + 0x00004400, 0x05000000, 0x00102040, 0x00040024, + 0x00004400, 0x05000008, 0x00182040, 0x10040024, + 0x02004400, 0x05000000, 0x001020c0, 0x00041024, + 0x02004400, 0x05000008, 0x001820c0, 0x10041024, + 0x00020400, 0x05008000, 0x08102000, 0x00200024, + 0x00020400, 0x05008008, 0x08182000, 0x10200024, + 0x02020400, 0x05008000, 0x08102080, 0x00201024, + 0x02020400, 0x05008008, 0x08182080, 0x10201024, + 0x00024400, 0x05008000, 0x08102040, 0x00240024, + 0x00024400, 0x05008008, 0x08182040, 0x10240024, + 0x02024400, 0x05008000, 0x081020c0, 0x00241024, + 0x02024400, 0x05008008, 0x081820c0, 0x10241024, + 0x00000800, 0x00010000, 0x20000000, 0x00000010, + 0x00000800, 0x00010008, 0x20080000, 0x10000010, + 0x02000800, 0x00010000, 0x20000080, 0x00001010, + 0x02000800, 0x00010008, 0x20080080, 0x10001010, + 0x00004800, 0x00010000, 0x20000040, 0x00040010, + 0x00004800, 0x00010008, 0x20080040, 0x10040010, + 0x02004800, 0x00010000, 0x200000c0, 0x00041010, + 0x02004800, 0x00010008, 0x200800c0, 0x10041010, + 0x00020800, 0x00018000, 0x28000000, 0x00200010, + 0x00020800, 0x00018008, 0x28080000, 0x10200010, + 0x02020800, 0x00018000, 0x28000080, 0x00201010, + 0x02020800, 0x00018008, 0x28080080, 0x10201010, + 0x00024800, 0x00018000, 0x28000040, 0x00240010, + 0x00024800, 0x00018008, 0x28080040, 0x10240010, + 0x02024800, 0x00018000, 0x280000c0, 0x00241010, + 0x02024800, 0x00018008, 0x280800c0, 0x10241010, + 0x00000800, 0x01010000, 0x20002000, 0x00000030, + 0x00000800, 0x01010008, 0x20082000, 0x10000030, + 0x02000800, 0x01010000, 0x20002080, 0x00001030, + 0x02000800, 0x01010008, 0x20082080, 0x10001030, + 0x00004800, 0x01010000, 0x20002040, 0x00040030, + 0x00004800, 0x01010008, 0x20082040, 0x10040030, + 0x02004800, 0x01010000, 0x200020c0, 0x00041030, + 0x02004800, 0x01010008, 0x200820c0, 0x10041030, + 0x00020800, 0x01018000, 0x28002000, 0x00200030, + 0x00020800, 0x01018008, 0x28082000, 0x10200030, + 0x02020800, 0x01018000, 0x28002080, 0x00201030, + 0x02020800, 0x01018008, 0x28082080, 0x10201030, + 0x00024800, 0x01018000, 0x28002040, 0x00240030, + 0x00024800, 0x01018008, 0x28082040, 0x10240030, + 0x02024800, 0x01018000, 0x280020c0, 0x00241030, + 0x02024800, 0x01018008, 0x280820c0, 0x10241030, + 0x00000c00, 0x04010000, 0x20100000, 0x00000014, + 0x00000c00, 0x04010008, 0x20180000, 0x10000014, + 0x02000c00, 0x04010000, 0x20100080, 0x00001014, + 0x02000c00, 0x04010008, 0x20180080, 0x10001014, + 0x00004c00, 0x04010000, 0x20100040, 0x00040014, + 0x00004c00, 0x04010008, 0x20180040, 0x10040014, + 0x02004c00, 0x04010000, 0x201000c0, 0x00041014, + 0x02004c00, 0x04010008, 0x201800c0, 0x10041014, + 0x00020c00, 0x04018000, 0x28100000, 0x00200014, + 0x00020c00, 0x04018008, 0x28180000, 0x10200014, + 0x02020c00, 0x04018000, 0x28100080, 0x00201014, + 0x02020c00, 0x04018008, 0x28180080, 0x10201014, + 0x00024c00, 0x04018000, 0x28100040, 0x00240014, + 0x00024c00, 0x04018008, 0x28180040, 0x10240014, + 0x02024c00, 0x04018000, 0x281000c0, 0x00241014, + 0x02024c00, 0x04018008, 0x281800c0, 0x10241014, + 0x00000c00, 0x05010000, 0x20102000, 0x00000034, + 0x00000c00, 0x05010008, 0x20182000, 0x10000034, + 0x02000c00, 0x05010000, 0x20102080, 0x00001034, + 0x02000c00, 0x05010008, 0x20182080, 0x10001034, + 0x00004c00, 0x05010000, 0x20102040, 0x00040034, + 0x00004c00, 0x05010008, 0x20182040, 0x10040034, + 0x02004c00, 0x05010000, 0x201020c0, 0x00041034, + 0x02004c00, 0x05010008, 0x201820c0, 0x10041034, + 0x00020c00, 0x05018000, 0x28102000, 0x00200034, + 0x00020c00, 0x05018008, 0x28182000, 0x10200034, + 0x02020c00, 0x05018000, 0x28102080, 0x00201034, + 0x02020c00, 0x05018008, 0x28182080, 0x10201034, + 0x00024c00, 0x05018000, 0x28102040, 0x00240034, + 0x00024c00, 0x05018008, 0x28182040, 0x10240034, + 0x02024c00, 0x05018000, 0x281020c0, 0x00241034, + 0x02024c00, 0x05018008, 0x281820c0, 0x10241034 }; +/* S-box lookup tables */ + +static const u32 S1[64] = { + 0x01010400, 0x00000000, 0x00010000, 0x01010404, + 0x01010004, 0x00010404, 0x00000004, 0x00010000, + 0x00000400, 0x01010400, 0x01010404, 0x00000400, + 0x01000404, 0x01010004, 0x01000000, 0x00000004, + 0x00000404, 0x01000400, 0x01000400, 0x00010400, + 0x00010400, 0x01010000, 0x01010000, 0x01000404, + 0x00010004, 0x01000004, 0x01000004, 0x00010004, + 0x00000000, 0x00000404, 0x00010404, 0x01000000, + 0x00010000, 0x01010404, 0x00000004, 0x01010000, + 0x01010400, 0x01000000, 0x01000000, 0x00000400, + 0x01010004, 0x00010000, 0x00010400, 0x01000004, + 0x00000400, 0x00000004, 0x01000404, 0x00010404, + 0x01010404, 0x00010004, 0x01010000, 0x01000404, + 0x01000004, 0x00000404, 0x00010404, 0x01010400, + 0x00000404, 0x01000400, 0x01000400, 0x00000000, + 0x00010004, 0x00010400, 0x00000000, 0x01010004 +}; -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 const u32 S2[64] = { + 0x80108020, 0x80008000, 0x00008000, 0x00108020, + 0x00100000, 0x00000020, 0x80100020, 0x80008020, + 0x80000020, 0x80108020, 0x80108000, 0x80000000, + 0x80008000, 0x00100000, 0x00000020, 0x80100020, + 0x00108000, 0x00100020, 0x80008020, 0x00000000, + 0x80000000, 0x00008000, 0x00108020, 0x80100000, + 0x00100020, 0x80000020, 0x00000000, 0x00108000, + 0x00008020, 0x80108000, 0x80100000, 0x00008020, + 0x00000000, 0x00108020, 0x80100020, 0x00100000, + 0x80008020, 0x80100000, 0x80108000, 0x00008000, + 0x80100000, 0x80008000, 0x00000020, 0x80108020, + 0x00108020, 0x00000020, 0x00008000, 0x80000000, + 0x00008020, 0x80108000, 0x00100000, 0x80000020, + 0x00100020, 0x80008020, 0x80000020, 0x00100020, + 0x00108000, 0x00000000, 0x80008000, 0x00008020, + 0x80000000, 0x80100020, 0x80108020, 0x00108000 +}; -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; -} +static const u32 S3[64] = { + 0x00000208, 0x08020200, 0x00000000, 0x08020008, + 0x08000200, 0x00000000, 0x00020208, 0x08000200, + 0x00020008, 0x08000008, 0x08000008, 0x00020000, + 0x08020208, 0x00020008, 0x08020000, 0x00000208, + 0x08000000, 0x00000008, 0x08020200, 0x00000200, + 0x00020200, 0x08020000, 0x08020008, 0x00020208, + 0x08000208, 0x00020200, 0x00020000, 0x08000208, + 0x00000008, 0x08020208, 0x00000200, 0x08000000, + 0x08020200, 0x08000000, 0x00020008, 0x00000208, + 0x00020000, 0x08020200, 0x08000200, 0x00000000, + 0x00000200, 0x00020008, 0x08020208, 0x08000200, + 0x08000008, 0x00000200, 0x00000000, 0x08020008, + 0x08000208, 0x00020000, 0x08000000, 0x08020208, + 0x00000008, 0x00020208, 0x00020200, 0x08000008, + 0x08020000, 0x08000208, 0x00000208, 0x08020000, + 0x00020208, 0x00000008, 0x08020008, 0x00020200 +}; + +static const u32 S4[64] = { + 0x00802001, 0x00002081, 0x00002081, 0x00000080, + 0x00802080, 0x00800081, 0x00800001, 0x00002001, + 0x00000000, 0x00802000, 0x00802000, 0x00802081, + 0x00000081, 0x00000000, 0x00800080, 0x00800001, + 0x00000001, 0x00002000, 0x00800000, 0x00802001, + 0x00000080, 0x00800000, 0x00002001, 0x00002080, + 0x00800081, 0x00000001, 0x00002080, 0x00800080, + 0x00002000, 0x00802080, 0x00802081, 0x00000081, + 0x00800080, 0x00800001, 0x00802000, 0x00802081, + 0x00000081, 0x00000000, 0x00000000, 0x00802000, + 0x00002080, 0x00800080, 0x00800081, 0x00000001, + 0x00802001, 0x00002081, 0x00002081, 0x00000080, + 0x00802081, 0x00000081, 0x00000001, 0x00002000, + 0x00800001, 0x00002001, 0x00802080, 0x00800081, + 0x00002001, 0x00002080, 0x00800000, 0x00802001, + 0x00000080, 0x00800000, 0x00002000, 0x00802080 +}; + +static const u32 S5[64] = { + 0x00000100, 0x02080100, 0x02080000, 0x42000100, + 0x00080000, 0x00000100, 0x40000000, 0x02080000, + 0x40080100, 0x00080000, 0x02000100, 0x40080100, + 0x42000100, 0x42080000, 0x00080100, 0x40000000, + 0x02000000, 0x40080000, 0x40080000, 0x00000000, + 0x40000100, 0x42080100, 0x42080100, 0x02000100, + 0x42080000, 0x40000100, 0x00000000, 0x42000000, + 0x02080100, 0x02000000, 0x42000000, 0x00080100, + 0x00080000, 0x42000100, 0x00000100, 0x02000000, + 0x40000000, 0x02080000, 0x42000100, 0x40080100, + 0x02000100, 0x40000000, 0x42080000, 0x02080100, + 0x40080100, 0x00000100, 0x02000000, 0x42080000, + 0x42080100, 0x00080100, 0x42000000, 0x42080100, + 0x02080000, 0x00000000, 0x40080000, 0x42000000, + 0x00080100, 0x02000100, 0x40000100, 0x00080000, + 0x00000000, 0x40080000, 0x02080100, 0x40000100 +}; + +static const u32 S6[64] = { + 0x20000010, 0x20400000, 0x00004000, 0x20404010, + 0x20400000, 0x00000010, 0x20404010, 0x00400000, + 0x20004000, 0x00404010, 0x00400000, 0x20000010, + 0x00400010, 0x20004000, 0x20000000, 0x00004010, + 0x00000000, 0x00400010, 0x20004010, 0x00004000, + 0x00404000, 0x20004010, 0x00000010, 0x20400010, + 0x20400010, 0x00000000, 0x00404010, 0x20404000, + 0x00004010, 0x00404000, 0x20404000, 0x20000000, + 0x20004000, 0x00000010, 0x20400010, 0x00404000, + 0x20404010, 0x00400000, 0x00004010, 0x20000010, + 0x00400000, 0x20004000, 0x20000000, 0x00004010, + 0x20000010, 0x20404010, 0x00404000, 0x20400000, + 0x00404010, 0x20404000, 0x00000000, 0x20400010, + 0x00000010, 0x00004000, 0x20400000, 0x00404010, + 0x00004000, 0x00400010, 0x20004010, 0x00000000, + 0x20404000, 0x20000000, 0x00400010, 0x20004010 +}; + +static const u32 S7[64] = { + 0x00200000, 0x04200002, 0x04000802, 0x00000000, + 0x00000800, 0x04000802, 0x00200802, 0x04200800, + 0x04200802, 0x00200000, 0x00000000, 0x04000002, + 0x00000002, 0x04000000, 0x04200002, 0x00000802, + 0x04000800, 0x00200802, 0x00200002, 0x04000800, + 0x04000002, 0x04200000, 0x04200800, 0x00200002, + 0x04200000, 0x00000800, 0x00000802, 0x04200802, + 0x00200800, 0x00000002, 0x04000000, 0x00200800, + 0x04000000, 0x00200800, 0x00200000, 0x04000802, + 0x04000802, 0x04200002, 0x04200002, 0x00000002, + 0x00200002, 0x04000000, 0x04000800, 0x00200000, + 0x04200800, 0x00000802, 0x00200802, 0x04200800, + 0x00000802, 0x04000002, 0x04200802, 0x04200000, + 0x00200800, 0x00000000, 0x00000002, 0x04200802, + 0x00000000, 0x00200802, 0x04200000, 0x00000800, + 0x04000002, 0x04000800, 0x00000800, 0x00200002 +}; + +static const u32 S8[64] = { + 0x10001040, 0x00001000, 0x00040000, 0x10041040, + 0x10000000, 0x10001040, 0x00000040, 0x10000000, + 0x00040040, 0x10040000, 0x10041040, 0x00041000, + 0x10041000, 0x00041040, 0x00001000, 0x00000040, + 0x10040000, 0x10000040, 0x10001000, 0x00001040, + 0x00041000, 0x00040040, 0x10040040, 0x10041000, + 0x00001040, 0x00000000, 0x00000000, 0x10040040, + 0x10000040, 0x10001000, 0x00041040, 0x00040000, + 0x00041040, 0x00040000, 0x10041000, 0x00001000, + 0x00000040, 0x10040040, 0x00001000, 0x00041040, + 0x10001000, 0x00000040, 0x10000040, 0x10040000, + 0x10040040, 0x10000000, 0x00040000, 0x10001040, + 0x00000000, 0x10041040, 0x00040040, 0x10000040, + 0x10040000, 0x10001000, 0x10001040, 0x00000000, + 0x10041040, 0x00041000, 0x00041000, 0x00001040, + 0x00001040, 0x00040040, 0x10000000, 0x10041000 +}; + +/* Encryption components: IP, FP, and round function */ + +#define IP(L, R, T) \ + ROL(R, 4); \ + T = L; \ + L ^= R; \ + L &= 0xf0f0f0f0; \ + R ^= L; \ + L ^= T; \ + ROL(R, 12); \ + T = L; \ + L ^= R; \ + L &= 0xffff0000; \ + R ^= L; \ + L ^= T; \ + ROR(R, 14); \ + T = L; \ + L ^= R; \ + L &= 0xcccccccc; \ + R ^= L; \ + L ^= T; \ + ROL(R, 6); \ + T = L; \ + L ^= R; \ + L &= 0xff00ff00; \ + R ^= L; \ + L ^= T; \ + ROR(R, 7); \ + T = L; \ + L ^= R; \ + L &= 0xaaaaaaaa; \ + R ^= L; \ + L ^= T; \ + ROL(L, 1); + +#define FP(L, R, T) \ + ROR(L, 1); \ + T = L; \ + L ^= R; \ + L &= 0xaaaaaaaa; \ + R ^= L; \ + L ^= T; \ + ROL(R, 7); \ + T = L; \ + L ^= R; \ + L &= 0xff00ff00; \ + R ^= L; \ + L ^= T; \ + ROR(R, 6); \ + T = L; \ + L ^= R; \ + L &= 0xcccccccc; \ + R ^= L; \ + L ^= T; \ + ROL(R, 14); \ + T = L; \ + L ^= R; \ + L &= 0xffff0000; \ + R ^= L; \ + L ^= T; \ + ROR(R, 12); \ + T = L; \ + L ^= R; \ + L &= 0xf0f0f0f0; \ + R ^= L; \ + L ^= T; \ + ROR(R, 4); + +#define ROUND(L, R, A, B, K, d) \ + B = K[0]; A = K[1]; K += d; \ + B ^= R; A ^= R; \ + B &= 0x3f3f3f3f; ROR(A, 4); \ + L ^= S8[0xff & B]; A &= 0x3f3f3f3f; \ + L ^= S6[0xff & (B >> 8)]; B >>= 16; \ + L ^= S7[0xff & A]; \ + L ^= S5[0xff & (A >> 8)]; A >>= 16; \ + L ^= S4[0xff & B]; \ + L ^= S2[0xff & (B >> 8)]; \ + L ^= S3[0xff & A]; \ + L ^= S1[0xff & (A >> 8)]; + +/* + * PC2 lookup tables are organized as 2 consecutive sets of 4 interleaved + * tables of 128 elements. One set is for C_i and the other for D_i, while + * the 4 interleaved tables correspond to four 7-bit subsets of C_i or D_i. + * + * After PC1 each of the variables a,b,c,d contains a 7 bit subset of C_i + * or D_i in bits 7-1 (bit 0 being the least significant). + */ + +#define T1(x) pt[2 * (x) + 0] +#define T2(x) pt[2 * (x) + 1] +#define T3(x) pt[2 * (x) + 2] +#define T4(x) pt[2 * (x) + 3] + +#define PC2(a, b, c, d) (T4(d) | T3(c) | T2(b) | T1(a)) /* + * Encryption key expansion + * * RFC2451: Weak key checks SHOULD be performed. + * + * FIPS 74: + * + * Keys having duals are keys which produce all zeros, all ones, or + * alternating zero-one patterns in the C and D registers after Permuted + * Choice 1 has operated on the key. + * */ -static int setkey(u32 *expkey, const u8 *key, unsigned int keylen, u32 *flags) +static unsigned long ekey(u32 *pe, const u8 *k) { - 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; + /* K&R: long is at least 32 bits */ + unsigned long a, b, c, d, w; + const u32 *pt = pc2; + + d = k[4]; d &= 0x0e; d <<= 4; d |= k[0] & 0x1e; d = pc1[d]; + c = k[5]; c &= 0x0e; c <<= 4; c |= k[1] & 0x1e; c = pc1[c]; + b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b]; + a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a]; + + pe[15 * 2 + 0] = PC2(a, b, c, d); d = rs[d]; + pe[14 * 2 + 0] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[13 * 2 + 0] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[12 * 2 + 0] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[11 * 2 + 0] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[10 * 2 + 0] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 9 * 2 + 0] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 8 * 2 + 0] = PC2(d, a, b, c); c = rs[c]; + pe[ 7 * 2 + 0] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 6 * 2 + 0] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 5 * 2 + 0] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 4 * 2 + 0] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 3 * 2 + 0] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 2 * 2 + 0] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 1 * 2 + 0] = PC2(c, d, a, b); b = rs[b]; + pe[ 0 * 2 + 0] = PC2(b, c, d, a); + + /* Check if first half is weak */ + w = (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]); + + /* Skip to next table set */ + pt += 512; + + d = k[0]; d &= 0xe0; d >>= 4; d |= k[4] & 0xf0; d = pc1[d + 1]; + c = k[1]; c &= 0xe0; c >>= 4; c |= k[5] & 0xf0; c = pc1[c + 1]; + b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1]; + a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1]; + + /* Check if second half is weak */ + w |= (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]); + + pe[15 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; + pe[14 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[13 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[12 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[11 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[10 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 9 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 8 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; + pe[ 7 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 6 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 5 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 4 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 3 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 2 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[ 1 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; + pe[ 0 * 2 + 1] = PC2(b, c, d, a); + + /* Fixup: 2413 5768 -> 1357 2468 */ + for (d = 0; d < 16; ++d) { + a = pe[2 * d]; + b = pe[2 * d + 1]; + c = a ^ b; + c &= 0xffff0000; + a ^= c; + b ^= c; + ROL(b, 18); + pe[2 * d] = a; + pe[2 * d + 1] = b; } -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); + /* Zero if weak key */ + return w; +} - return 0; +/* + * Decryption key expansion + * + * No weak key checking is performed, as this is only used by triple DES + * + */ +static void dkey(u32 *pe, const u8 *k) +{ + /* K&R: long is at least 32 bits */ + unsigned long a, b, c, d; + const u32 *pt = pc2; + + d = k[4]; d &= 0x0e; d <<= 4; d |= k[0] & 0x1e; d = pc1[d]; + c = k[5]; c &= 0x0e; c <<= 4; c |= k[1] & 0x1e; c = pc1[c]; + b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b]; + a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a]; + + pe[ 0 * 2] = PC2(a, b, c, d); d = rs[d]; + pe[ 1 * 2] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 2 * 2] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 3 * 2] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 4 * 2] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 5 * 2] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 6 * 2] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 7 * 2] = PC2(d, a, b, c); c = rs[c]; + pe[ 8 * 2] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 9 * 2] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[10 * 2] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[11 * 2] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[12 * 2] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[13 * 2] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[14 * 2] = PC2(c, d, a, b); b = rs[b]; + pe[15 * 2] = PC2(b, c, d, a); + + /* Skip to next table set */ + pt += 512; + + d = k[0]; d &= 0xe0; d >>= 4; d |= k[4] & 0xf0; d = pc1[d + 1]; + c = k[1]; c &= 0xe0; c >>= 4; c |= k[5] & 0xf0; c = pc1[c + 1]; + b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1]; + a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1]; + + pe[ 0 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; + pe[ 1 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 2 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 3 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 4 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 5 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; b = rs[b]; + pe[ 6 * 2 + 1] = PC2(b, c, d, a); a = rs[a]; d = rs[d]; + pe[ 7 * 2 + 1] = PC2(d, a, b, c); c = rs[c]; + pe[ 8 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[ 9 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[10 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[11 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[12 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; a = rs[a]; + pe[13 * 2 + 1] = PC2(a, b, c, d); d = rs[d]; c = rs[c]; + pe[14 * 2 + 1] = PC2(c, d, a, b); b = rs[b]; + pe[15 * 2 + 1] = PC2(b, c, d, a); + + /* Fixup: 2413 5768 -> 1357 2468 */ + for (d = 0; d < 16; ++d) { + a = pe[2 * d]; + b = pe[2 * d + 1]; + c = a ^ b; + c &= 0xffff0000; + a ^= c; + b ^= c; + ROL(b, 18); + pe[2 * d] = a; + pe[2 * d + 1] = b; + } } static int des_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags) { - return setkey(((struct des_ctx *)ctx)->expkey, key, keylen, flags); + struct des_ctx *dctx = ctx; + u32 tmp[DES_EXPKEY_WORDS]; + int ret; + + /* Expand to tmp */ + ret = ekey(tmp, key); + + if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) { + *flags |= CRYPTO_TFM_RES_WEAK_KEY; + return -EINVAL; + } + + /* Copy to output */ + memcpy(dctx->expkey, tmp, sizeof(dctx->expkey)); + + return 0; } static void des_encrypt(void *ctx, u8 *dst, const u8 *src) { - des_small_fips_encrypt(((struct des_ctx *)ctx)->expkey, dst, src); + const u32 *K = ((struct des_ctx *)ctx)->expkey; + const __le32 *s = (const __le32 *)src; + __le32 *d = (__le32 *)dst; + u32 L, R, A, B; + int i; + + L = le32_to_cpu(s[0]); + R = le32_to_cpu(s[1]); + + IP(L, R, A); + for (i = 0; i < 8; i++) { + ROUND(L, R, A, B, K, 2); + ROUND(R, L, A, B, K, 2); + } + FP(R, L, A); + + d[0] = cpu_to_le32(R); + d[1] = cpu_to_le32(L); } static void des_decrypt(void *ctx, u8 *dst, const u8 *src) { - des_small_fips_decrypt(((struct des_ctx *)ctx)->expkey, dst, src); + const u32 *K = ((struct des_ctx *)ctx)->expkey + DES_EXPKEY_WORDS - 2; + const __le32 *s = (const __le32 *)src; + __le32 *d = (__le32 *)dst; + u32 L, R, A, B; + int i; + + L = le32_to_cpu(s[0]); + R = le32_to_cpu(s[1]); + + IP(L, R, A); + for (i = 0; i < 8; i++) { + ROUND(L, R, A, B, K, -2); + ROUND(R, L, A, B, K, -2); + } + FP(R, L, A); + + d[0] = cpu_to_le32(R); + d[1] = cpu_to_le32(L); } -/* +/* * RFC2451: * * For DES-EDE3, there is no known need to reject weak or @@ -1197,44 +859,86 @@ static void des_decrypt(void *ctx, u8 *dst, const u8 *src) * */ static int des3_ede_setkey(void *ctx, const u8 *key, - unsigned int keylen, u32 *flags) + unsigned int keylen, u32 *flags) { - unsigned int i, off; + const u32 *K = (const u32 *)key; struct des3_ede_ctx *dctx = ctx; + u32 *expkey = dctx->expkey; - if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) && - memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2], - DES_KEY_SIZE))) { - + if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) || + !((K[2] ^ K[4]) | (K[3] ^ K[5])))) + { *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; - } + + ekey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE; + dkey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE; + ekey(expkey, key); + 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); + const u32 *K = dctx->expkey; + const __le32 *s = (const __le32 *)src; + __le32 *d = (__le32 *)dst; + u32 L, R, A, B; + int i; + + L = le32_to_cpu(s[0]); + R = le32_to_cpu(s[1]); + + IP(L, R, A); + for (i = 0; i < 8; i++) { + ROUND(L, R, A, B, K, 2); + ROUND(R, L, A, B, K, 2); + } + for (i = 0; i < 8; i++) { + ROUND(R, L, A, B, K, 2); + ROUND(L, R, A, B, K, 2); + } + for (i = 0; i < 8; i++) { + ROUND(L, R, A, B, K, 2); + ROUND(R, L, A, B, K, 2); + } + FP(R, L, A); + + d[0] = cpu_to_le32(R); + d[1] = cpu_to_le32(L); } static void des3_ede_decrypt(void *ctx, u8 *dst, const u8 *src) { struct des3_ede_ctx *dctx = ctx; + const u32 *K = dctx->expkey + DES3_EDE_EXPKEY_WORDS - 2; + const __le32 *s = (const __le32 *)src; + __le32 *d = (__le32 *)dst; + u32 L, R, A, B; + int i; + + L = le32_to_cpu(s[0]); + R = le32_to_cpu(s[1]); + + IP(L, R, A); + for (i = 0; i < 8; i++) { + ROUND(L, R, A, B, K, -2); + ROUND(R, L, A, B, K, -2); + } + for (i = 0; i < 8; i++) { + ROUND(R, L, A, B, K, -2); + ROUND(L, R, A, B, K, -2); + } + for (i = 0; i < 8; i++) { + ROUND(L, R, A, B, K, -2); + ROUND(R, L, A, B, K, -2); + } + FP(R, L, A); - 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); + d[0] = cpu_to_le32(R); + d[1] = cpu_to_le32(L); } static struct crypto_alg des_alg = { @@ -1247,7 +951,7 @@ static struct crypto_alg des_alg = { .cra_u = { .cipher = { .cia_min_keysize = DES_KEY_SIZE, .cia_max_keysize = DES_KEY_SIZE, - .cia_setkey = des_setkey, + .cia_setkey = des_setkey, .cia_encrypt = des_encrypt, .cia_decrypt = des_decrypt } } }; @@ -1262,9 +966,9 @@ static struct crypto_alg des3_ede_alg = { .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 } } + .cia_setkey = des3_ede_setkey, + .cia_encrypt = des3_ede_encrypt, + .cia_decrypt = des3_ede_decrypt } } }; MODULE_ALIAS("des3_ede"); @@ -1272,7 +976,7 @@ MODULE_ALIAS("des3_ede"); static int __init init(void) { int ret = 0; - + ret = crypto_register_alg(&des_alg); if (ret < 0) goto out; @@ -1280,7 +984,7 @@ static int __init init(void) ret = crypto_register_alg(&des3_ede_alg); if (ret < 0) crypto_unregister_alg(&des_alg); -out: +out: return ret; } @@ -1295,3 +999,4 @@ module_exit(fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms"); +MODULE_AUTHOR("Dag Arne Osvik <da@osvik.no>"); |