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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 } } }; 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");