| /* |
| * Cryptographic API. |
| * |
| * DES & Triple DES EDE Cipher Algorithms. |
| * |
| * 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 |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| */ |
| |
| #include <asm/byteorder.h> |
| #include <linux/bitops.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/errno.h> |
| #include <linux/crypto.h> |
| #include <linux/types.h> |
| |
| #include <crypto/des.h> |
| |
| #define ROL(x, r) ((x) = rol32((x), (r))) |
| #define ROR(x, r) ((x) = ror32((x), (r))) |
| |
| struct des_ctx { |
| u32 expkey[DES_EXPKEY_WORDS]; |
| }; |
| |
| struct des3_ede_ctx { |
| u32 expkey[DES3_EDE_EXPKEY_WORDS]; |
| }; |
| |
| /* 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 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 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 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 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 DES_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. |
| * |
| */ |
| unsigned long des_ekey(u32 *pe, const u8 *k) |
| { |
| /* 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] = DES_PC2(a, b, c, d); d = rs[d]; |
| pe[14 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[13 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[12 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[11 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[10 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[ 9 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[ 8 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; |
| pe[ 7 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[ 6 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[ 5 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[ 4 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[ 3 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[ 2 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[ 1 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; |
| pe[ 0 * 2 + 0] = DES_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] = DES_PC2(a, b, c, d); d = rs[d]; |
| pe[14 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[13 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[12 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[11 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[10 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[ 9 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[ 8 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; |
| pe[ 7 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[ 6 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[ 5 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[ 4 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[ 3 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[ 2 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[ 1 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; |
| pe[ 0 * 2 + 1] = DES_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; |
| } |
| |
| /* Zero if weak key */ |
| return w; |
| } |
| EXPORT_SYMBOL_GPL(des_ekey); |
| |
| /* |
| * 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] = DES_PC2(a, b, c, d); d = rs[d]; |
| pe[ 1 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[ 2 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[ 3 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[ 4 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[ 5 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[ 6 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[ 7 * 2] = DES_PC2(d, a, b, c); c = rs[c]; |
| pe[ 8 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[ 9 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[10 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[11 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[12 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[13 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[14 * 2] = DES_PC2(c, d, a, b); b = rs[b]; |
| pe[15 * 2] = DES_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] = DES_PC2(a, b, c, d); d = rs[d]; |
| pe[ 1 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[ 2 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[ 3 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[ 4 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[ 5 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; |
| pe[ 6 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; |
| pe[ 7 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; |
| pe[ 8 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[ 9 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[10 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[11 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[12 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; |
| pe[13 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; |
| pe[14 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; |
| pe[15 * 2 + 1] = DES_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(struct crypto_tfm *tfm, const u8 *key, |
| unsigned int keylen) |
| { |
| struct des_ctx *dctx = crypto_tfm_ctx(tfm); |
| u32 *flags = &tfm->crt_flags; |
| u32 tmp[DES_EXPKEY_WORDS]; |
| int ret; |
| |
| /* Expand to tmp */ |
| ret = des_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(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
| { |
| struct des_ctx *ctx = crypto_tfm_ctx(tfm); |
| const u32 *K = 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(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
| { |
| struct des_ctx *ctx = crypto_tfm_ctx(tfm); |
| const u32 *K = 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 |
| * 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(struct crypto_tfm *tfm, const u8 *key, |
| unsigned int keylen) |
| { |
| const u32 *K = (const u32 *)key; |
| struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm); |
| u32 *expkey = dctx->expkey; |
| u32 *flags = &tfm->crt_flags; |
| |
| if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) || |
| !((K[2] ^ K[4]) | (K[3] ^ K[5]))) && |
| (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) { |
| *flags |= CRYPTO_TFM_RES_WEAK_KEY; |
| return -EINVAL; |
| } |
| |
| des_ekey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE; |
| dkey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE; |
| des_ekey(expkey, key); |
| |
| return 0; |
| } |
| |
| static void des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
| { |
| struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm); |
| 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(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
| { |
| struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm); |
| 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); |
| |
| d[0] = cpu_to_le32(R); |
| d[1] = cpu_to_le32(L); |
| } |
| |
| 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_alignmask = 3, |
| .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_alignmask = 3, |
| .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 des_generic_mod_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 des_generic_mod_fini(void) |
| { |
| crypto_unregister_alg(&des3_ede_alg); |
| crypto_unregister_alg(&des_alg); |
| } |
| |
| module_init(des_generic_mod_init); |
| module_exit(des_generic_mod_fini); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms"); |
| MODULE_AUTHOR("Dag Arne Osvik <da@osvik.no>"); |
| MODULE_ALIAS_CRYPTO("des"); |
| MODULE_ALIAS_CRYPTO("des-generic"); |
| MODULE_ALIAS_CRYPTO("des3_ede"); |
| MODULE_ALIAS_CRYPTO("des3_ede-generic"); |