Revision 2b6c53b1504865728a6dfad3e720918a2f89f3a5 authored by Jon Medhurst (Tixy) on 20 August 2014, 12:41:04 UTC, committed by Tomi Valkeinen on 26 August 2014, 09:50:27 UTC
If the device-tree specifies a max-memory-bandwidth property then the CLCD driver uses that to calculate the bits-per-pixel supported, however, this calculation is faulty for two reasons. 1. It doesn't ensure that the result is a sane value, i.e. a power of 2 and <= 32 as the rest of the code assumes. 2. It uses the displayed resolution and calculates the average bandwidth across the whole frame. It should instead calculate the peak bandwidth based on the pixel clock. This patch fixes both the above. Signed-off-by: Jon Medhurst <tixy@linaro.org> Acked-by: Pawel Moll <pawel.moll@arm.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
1 parent 754d561
seed.c
/*
* Cryptographic API.
*
* SEED Cipher Algorithm.
*
* 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.
*
* Documentation of SEED can be found in RFC 4269.
* Copyright (C) 2007 Korea Information Security Agency (KISA).
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/crypto.h>
#include <asm/byteorder.h>
#define SEED_NUM_KCONSTANTS 16
#define SEED_KEY_SIZE 16
#define SEED_BLOCK_SIZE 16
#define SEED_KEYSCHED_LEN 32
/*
* #define byte(x, nr) ((unsigned char)((x) >> (nr*8)))
*/
static inline u8
byte(const u32 x, const unsigned n)
{
return x >> (n << 3);
}
struct seed_ctx {
u32 keysched[SEED_KEYSCHED_LEN];
};
static const u32 SS0[256] = {
0x2989a1a8, 0x05858184, 0x16c6d2d4, 0x13c3d3d0,
0x14445054, 0x1d0d111c, 0x2c8ca0ac, 0x25052124,
0x1d4d515c, 0x03434340, 0x18081018, 0x1e0e121c,
0x11415150, 0x3cccf0fc, 0x0acac2c8, 0x23436360,
0x28082028, 0x04444044, 0x20002020, 0x1d8d919c,
0x20c0e0e0, 0x22c2e2e0, 0x08c8c0c8, 0x17071314,
0x2585a1a4, 0x0f8f838c, 0x03030300, 0x3b4b7378,
0x3b8bb3b8, 0x13031310, 0x12c2d2d0, 0x2ecee2ec,
0x30407070, 0x0c8c808c, 0x3f0f333c, 0x2888a0a8,
0x32023230, 0x1dcdd1dc, 0x36c6f2f4, 0x34447074,
0x2ccce0ec, 0x15859194, 0x0b0b0308, 0x17475354,
0x1c4c505c, 0x1b4b5358, 0x3d8db1bc, 0x01010100,
0x24042024, 0x1c0c101c, 0x33437370, 0x18889098,
0x10001010, 0x0cccc0cc, 0x32c2f2f0, 0x19c9d1d8,
0x2c0c202c, 0x27c7e3e4, 0x32427270, 0x03838380,
0x1b8b9398, 0x11c1d1d0, 0x06868284, 0x09c9c1c8,
0x20406060, 0x10405050, 0x2383a3a0, 0x2bcbe3e8,
0x0d0d010c, 0x3686b2b4, 0x1e8e929c, 0x0f4f434c,
0x3787b3b4, 0x1a4a5258, 0x06c6c2c4, 0x38487078,
0x2686a2a4, 0x12021210, 0x2f8fa3ac, 0x15c5d1d4,
0x21416160, 0x03c3c3c0, 0x3484b0b4, 0x01414140,
0x12425250, 0x3d4d717c, 0x0d8d818c, 0x08080008,
0x1f0f131c, 0x19899198, 0x00000000, 0x19091118,
0x04040004, 0x13435350, 0x37c7f3f4, 0x21c1e1e0,
0x3dcdf1fc, 0x36467274, 0x2f0f232c, 0x27072324,
0x3080b0b0, 0x0b8b8388, 0x0e0e020c, 0x2b8ba3a8,
0x2282a2a0, 0x2e4e626c, 0x13839390, 0x0d4d414c,
0x29496168, 0x3c4c707c, 0x09090108, 0x0a0a0208,
0x3f8fb3bc, 0x2fcfe3ec, 0x33c3f3f0, 0x05c5c1c4,
0x07878384, 0x14041014, 0x3ecef2fc, 0x24446064,
0x1eced2dc, 0x2e0e222c, 0x0b4b4348, 0x1a0a1218,
0x06060204, 0x21012120, 0x2b4b6368, 0x26466264,
0x02020200, 0x35c5f1f4, 0x12829290, 0x0a8a8288,
0x0c0c000c, 0x3383b3b0, 0x3e4e727c, 0x10c0d0d0,
0x3a4a7278, 0x07474344, 0x16869294, 0x25c5e1e4,
0x26062224, 0x00808080, 0x2d8da1ac, 0x1fcfd3dc,
0x2181a1a0, 0x30003030, 0x37073334, 0x2e8ea2ac,
0x36063234, 0x15051114, 0x22022220, 0x38083038,
0x34c4f0f4, 0x2787a3a4, 0x05454144, 0x0c4c404c,
0x01818180, 0x29c9e1e8, 0x04848084, 0x17879394,
0x35053134, 0x0bcbc3c8, 0x0ecec2cc, 0x3c0c303c,
0x31417170, 0x11011110, 0x07c7c3c4, 0x09898188,
0x35457174, 0x3bcbf3f8, 0x1acad2d8, 0x38c8f0f8,
0x14849094, 0x19495158, 0x02828280, 0x04c4c0c4,
0x3fcff3fc, 0x09494148, 0x39093138, 0x27476364,
0x00c0c0c0, 0x0fcfc3cc, 0x17c7d3d4, 0x3888b0b8,
0x0f0f030c, 0x0e8e828c, 0x02424240, 0x23032320,
0x11819190, 0x2c4c606c, 0x1bcbd3d8, 0x2484a0a4,
0x34043034, 0x31c1f1f0, 0x08484048, 0x02c2c2c0,
0x2f4f636c, 0x3d0d313c, 0x2d0d212c, 0x00404040,
0x3e8eb2bc, 0x3e0e323c, 0x3c8cb0bc, 0x01c1c1c0,
0x2a8aa2a8, 0x3a8ab2b8, 0x0e4e424c, 0x15455154,
0x3b0b3338, 0x1cccd0dc, 0x28486068, 0x3f4f737c,
0x1c8c909c, 0x18c8d0d8, 0x0a4a4248, 0x16465254,
0x37477374, 0x2080a0a0, 0x2dcde1ec, 0x06464244,
0x3585b1b4, 0x2b0b2328, 0x25456164, 0x3acaf2f8,
0x23c3e3e0, 0x3989b1b8, 0x3181b1b0, 0x1f8f939c,
0x1e4e525c, 0x39c9f1f8, 0x26c6e2e4, 0x3282b2b0,
0x31013130, 0x2acae2e8, 0x2d4d616c, 0x1f4f535c,
0x24c4e0e4, 0x30c0f0f0, 0x0dcdc1cc, 0x08888088,
0x16061214, 0x3a0a3238, 0x18485058, 0x14c4d0d4,
0x22426260, 0x29092128, 0x07070304, 0x33033330,
0x28c8e0e8, 0x1b0b1318, 0x05050104, 0x39497178,
0x10809090, 0x2a4a6268, 0x2a0a2228, 0x1a8a9298,
};
static const u32 SS1[256] = {
0x38380830, 0xe828c8e0, 0x2c2d0d21, 0xa42686a2,
0xcc0fcfc3, 0xdc1eced2, 0xb03383b3, 0xb83888b0,
0xac2f8fa3, 0x60204060, 0x54154551, 0xc407c7c3,
0x44044440, 0x6c2f4f63, 0x682b4b63, 0x581b4b53,
0xc003c3c3, 0x60224262, 0x30330333, 0xb43585b1,
0x28290921, 0xa02080a0, 0xe022c2e2, 0xa42787a3,
0xd013c3d3, 0x90118191, 0x10110111, 0x04060602,
0x1c1c0c10, 0xbc3c8cb0, 0x34360632, 0x480b4b43,
0xec2fcfe3, 0x88088880, 0x6c2c4c60, 0xa82888a0,
0x14170713, 0xc404c4c0, 0x14160612, 0xf434c4f0,
0xc002c2c2, 0x44054541, 0xe021c1e1, 0xd416c6d2,
0x3c3f0f33, 0x3c3d0d31, 0x8c0e8e82, 0x98188890,
0x28280820, 0x4c0e4e42, 0xf436c6f2, 0x3c3e0e32,
0xa42585a1, 0xf839c9f1, 0x0c0d0d01, 0xdc1fcfd3,
0xd818c8d0, 0x282b0b23, 0x64264662, 0x783a4a72,
0x24270723, 0x2c2f0f23, 0xf031c1f1, 0x70324272,
0x40024242, 0xd414c4d0, 0x40014141, 0xc000c0c0,
0x70334373, 0x64274763, 0xac2c8ca0, 0x880b8b83,
0xf437c7f3, 0xac2d8da1, 0x80008080, 0x1c1f0f13,
0xc80acac2, 0x2c2c0c20, 0xa82a8aa2, 0x34340430,
0xd012c2d2, 0x080b0b03, 0xec2ecee2, 0xe829c9e1,
0x5c1d4d51, 0x94148490, 0x18180810, 0xf838c8f0,
0x54174753, 0xac2e8ea2, 0x08080800, 0xc405c5c1,
0x10130313, 0xcc0dcdc1, 0x84068682, 0xb83989b1,
0xfc3fcff3, 0x7c3d4d71, 0xc001c1c1, 0x30310131,
0xf435c5f1, 0x880a8a82, 0x682a4a62, 0xb03181b1,
0xd011c1d1, 0x20200020, 0xd417c7d3, 0x00020202,
0x20220222, 0x04040400, 0x68284860, 0x70314171,
0x04070703, 0xd81bcbd3, 0x9c1d8d91, 0x98198991,
0x60214161, 0xbc3e8eb2, 0xe426c6e2, 0x58194951,
0xdc1dcdd1, 0x50114151, 0x90108090, 0xdc1cccd0,
0x981a8a92, 0xa02383a3, 0xa82b8ba3, 0xd010c0d0,
0x80018181, 0x0c0f0f03, 0x44074743, 0x181a0a12,
0xe023c3e3, 0xec2ccce0, 0x8c0d8d81, 0xbc3f8fb3,
0x94168692, 0x783b4b73, 0x5c1c4c50, 0xa02282a2,
0xa02181a1, 0x60234363, 0x20230323, 0x4c0d4d41,
0xc808c8c0, 0x9c1e8e92, 0x9c1c8c90, 0x383a0a32,
0x0c0c0c00, 0x2c2e0e22, 0xb83a8ab2, 0x6c2e4e62,
0x9c1f8f93, 0x581a4a52, 0xf032c2f2, 0x90128292,
0xf033c3f3, 0x48094941, 0x78384870, 0xcc0cccc0,
0x14150511, 0xf83bcbf3, 0x70304070, 0x74354571,
0x7c3f4f73, 0x34350531, 0x10100010, 0x00030303,
0x64244460, 0x6c2d4d61, 0xc406c6c2, 0x74344470,
0xd415c5d1, 0xb43484b0, 0xe82acae2, 0x08090901,
0x74364672, 0x18190911, 0xfc3ecef2, 0x40004040,
0x10120212, 0xe020c0e0, 0xbc3d8db1, 0x04050501,
0xf83acaf2, 0x00010101, 0xf030c0f0, 0x282a0a22,
0x5c1e4e52, 0xa82989a1, 0x54164652, 0x40034343,
0x84058581, 0x14140410, 0x88098981, 0x981b8b93,
0xb03080b0, 0xe425c5e1, 0x48084840, 0x78394971,
0x94178793, 0xfc3cccf0, 0x1c1e0e12, 0x80028282,
0x20210121, 0x8c0c8c80, 0x181b0b13, 0x5c1f4f53,
0x74374773, 0x54144450, 0xb03282b2, 0x1c1d0d11,
0x24250521, 0x4c0f4f43, 0x00000000, 0x44064642,
0xec2dcde1, 0x58184850, 0x50124252, 0xe82bcbe3,
0x7c3e4e72, 0xd81acad2, 0xc809c9c1, 0xfc3dcdf1,
0x30300030, 0x94158591, 0x64254561, 0x3c3c0c30,
0xb43686b2, 0xe424c4e0, 0xb83b8bb3, 0x7c3c4c70,
0x0c0e0e02, 0x50104050, 0x38390931, 0x24260622,
0x30320232, 0x84048480, 0x68294961, 0x90138393,
0x34370733, 0xe427c7e3, 0x24240420, 0xa42484a0,
0xc80bcbc3, 0x50134353, 0x080a0a02, 0x84078783,
0xd819c9d1, 0x4c0c4c40, 0x80038383, 0x8c0f8f83,
0xcc0ecec2, 0x383b0b33, 0x480a4a42, 0xb43787b3,
};
static const u32 SS2[256] = {
0xa1a82989, 0x81840585, 0xd2d416c6, 0xd3d013c3,
0x50541444, 0x111c1d0d, 0xa0ac2c8c, 0x21242505,
0x515c1d4d, 0x43400343, 0x10181808, 0x121c1e0e,
0x51501141, 0xf0fc3ccc, 0xc2c80aca, 0x63602343,
0x20282808, 0x40440444, 0x20202000, 0x919c1d8d,
0xe0e020c0, 0xe2e022c2, 0xc0c808c8, 0x13141707,
0xa1a42585, 0x838c0f8f, 0x03000303, 0x73783b4b,
0xb3b83b8b, 0x13101303, 0xd2d012c2, 0xe2ec2ece,
0x70703040, 0x808c0c8c, 0x333c3f0f, 0xa0a82888,
0x32303202, 0xd1dc1dcd, 0xf2f436c6, 0x70743444,
0xe0ec2ccc, 0x91941585, 0x03080b0b, 0x53541747,
0x505c1c4c, 0x53581b4b, 0xb1bc3d8d, 0x01000101,
0x20242404, 0x101c1c0c, 0x73703343, 0x90981888,
0x10101000, 0xc0cc0ccc, 0xf2f032c2, 0xd1d819c9,
0x202c2c0c, 0xe3e427c7, 0x72703242, 0x83800383,
0x93981b8b, 0xd1d011c1, 0x82840686, 0xc1c809c9,
0x60602040, 0x50501040, 0xa3a02383, 0xe3e82bcb,
0x010c0d0d, 0xb2b43686, 0x929c1e8e, 0x434c0f4f,
0xb3b43787, 0x52581a4a, 0xc2c406c6, 0x70783848,
0xa2a42686, 0x12101202, 0xa3ac2f8f, 0xd1d415c5,
0x61602141, 0xc3c003c3, 0xb0b43484, 0x41400141,
0x52501242, 0x717c3d4d, 0x818c0d8d, 0x00080808,
0x131c1f0f, 0x91981989, 0x00000000, 0x11181909,
0x00040404, 0x53501343, 0xf3f437c7, 0xe1e021c1,
0xf1fc3dcd, 0x72743646, 0x232c2f0f, 0x23242707,
0xb0b03080, 0x83880b8b, 0x020c0e0e, 0xa3a82b8b,
0xa2a02282, 0x626c2e4e, 0x93901383, 0x414c0d4d,
0x61682949, 0x707c3c4c, 0x01080909, 0x02080a0a,
0xb3bc3f8f, 0xe3ec2fcf, 0xf3f033c3, 0xc1c405c5,
0x83840787, 0x10141404, 0xf2fc3ece, 0x60642444,
0xd2dc1ece, 0x222c2e0e, 0x43480b4b, 0x12181a0a,
0x02040606, 0x21202101, 0x63682b4b, 0x62642646,
0x02000202, 0xf1f435c5, 0x92901282, 0x82880a8a,
0x000c0c0c, 0xb3b03383, 0x727c3e4e, 0xd0d010c0,
0x72783a4a, 0x43440747, 0x92941686, 0xe1e425c5,
0x22242606, 0x80800080, 0xa1ac2d8d, 0xd3dc1fcf,
0xa1a02181, 0x30303000, 0x33343707, 0xa2ac2e8e,
0x32343606, 0x11141505, 0x22202202, 0x30383808,
0xf0f434c4, 0xa3a42787, 0x41440545, 0x404c0c4c,
0x81800181, 0xe1e829c9, 0x80840484, 0x93941787,
0x31343505, 0xc3c80bcb, 0xc2cc0ece, 0x303c3c0c,
0x71703141, 0x11101101, 0xc3c407c7, 0x81880989,
0x71743545, 0xf3f83bcb, 0xd2d81aca, 0xf0f838c8,
0x90941484, 0x51581949, 0x82800282, 0xc0c404c4,
0xf3fc3fcf, 0x41480949, 0x31383909, 0x63642747,
0xc0c000c0, 0xc3cc0fcf, 0xd3d417c7, 0xb0b83888,
0x030c0f0f, 0x828c0e8e, 0x42400242, 0x23202303,
0x91901181, 0x606c2c4c, 0xd3d81bcb, 0xa0a42484,
0x30343404, 0xf1f031c1, 0x40480848, 0xc2c002c2,
0x636c2f4f, 0x313c3d0d, 0x212c2d0d, 0x40400040,
0xb2bc3e8e, 0x323c3e0e, 0xb0bc3c8c, 0xc1c001c1,
0xa2a82a8a, 0xb2b83a8a, 0x424c0e4e, 0x51541545,
0x33383b0b, 0xd0dc1ccc, 0x60682848, 0x737c3f4f,
0x909c1c8c, 0xd0d818c8, 0x42480a4a, 0x52541646,
0x73743747, 0xa0a02080, 0xe1ec2dcd, 0x42440646,
0xb1b43585, 0x23282b0b, 0x61642545, 0xf2f83aca,
0xe3e023c3, 0xb1b83989, 0xb1b03181, 0x939c1f8f,
0x525c1e4e, 0xf1f839c9, 0xe2e426c6, 0xb2b03282,
0x31303101, 0xe2e82aca, 0x616c2d4d, 0x535c1f4f,
0xe0e424c4, 0xf0f030c0, 0xc1cc0dcd, 0x80880888,
0x12141606, 0x32383a0a, 0x50581848, 0xd0d414c4,
0x62602242, 0x21282909, 0x03040707, 0x33303303,
0xe0e828c8, 0x13181b0b, 0x01040505, 0x71783949,
0x90901080, 0x62682a4a, 0x22282a0a, 0x92981a8a,
};
static const u32 SS3[256] = {
0x08303838, 0xc8e0e828, 0x0d212c2d, 0x86a2a426,
0xcfc3cc0f, 0xced2dc1e, 0x83b3b033, 0x88b0b838,
0x8fa3ac2f, 0x40606020, 0x45515415, 0xc7c3c407,
0x44404404, 0x4f636c2f, 0x4b63682b, 0x4b53581b,
0xc3c3c003, 0x42626022, 0x03333033, 0x85b1b435,
0x09212829, 0x80a0a020, 0xc2e2e022, 0x87a3a427,
0xc3d3d013, 0x81919011, 0x01111011, 0x06020406,
0x0c101c1c, 0x8cb0bc3c, 0x06323436, 0x4b43480b,
0xcfe3ec2f, 0x88808808, 0x4c606c2c, 0x88a0a828,
0x07131417, 0xc4c0c404, 0x06121416, 0xc4f0f434,
0xc2c2c002, 0x45414405, 0xc1e1e021, 0xc6d2d416,
0x0f333c3f, 0x0d313c3d, 0x8e828c0e, 0x88909818,
0x08202828, 0x4e424c0e, 0xc6f2f436, 0x0e323c3e,
0x85a1a425, 0xc9f1f839, 0x0d010c0d, 0xcfd3dc1f,
0xc8d0d818, 0x0b23282b, 0x46626426, 0x4a72783a,
0x07232427, 0x0f232c2f, 0xc1f1f031, 0x42727032,
0x42424002, 0xc4d0d414, 0x41414001, 0xc0c0c000,
0x43737033, 0x47636427, 0x8ca0ac2c, 0x8b83880b,
0xc7f3f437, 0x8da1ac2d, 0x80808000, 0x0f131c1f,
0xcac2c80a, 0x0c202c2c, 0x8aa2a82a, 0x04303434,
0xc2d2d012, 0x0b03080b, 0xcee2ec2e, 0xc9e1e829,
0x4d515c1d, 0x84909414, 0x08101818, 0xc8f0f838,
0x47535417, 0x8ea2ac2e, 0x08000808, 0xc5c1c405,
0x03131013, 0xcdc1cc0d, 0x86828406, 0x89b1b839,
0xcff3fc3f, 0x4d717c3d, 0xc1c1c001, 0x01313031,
0xc5f1f435, 0x8a82880a, 0x4a62682a, 0x81b1b031,
0xc1d1d011, 0x00202020, 0xc7d3d417, 0x02020002,
0x02222022, 0x04000404, 0x48606828, 0x41717031,
0x07030407, 0xcbd3d81b, 0x8d919c1d, 0x89919819,
0x41616021, 0x8eb2bc3e, 0xc6e2e426, 0x49515819,
0xcdd1dc1d, 0x41515011, 0x80909010, 0xccd0dc1c,
0x8a92981a, 0x83a3a023, 0x8ba3a82b, 0xc0d0d010,
0x81818001, 0x0f030c0f, 0x47434407, 0x0a12181a,
0xc3e3e023, 0xcce0ec2c, 0x8d818c0d, 0x8fb3bc3f,
0x86929416, 0x4b73783b, 0x4c505c1c, 0x82a2a022,
0x81a1a021, 0x43636023, 0x03232023, 0x4d414c0d,
0xc8c0c808, 0x8e929c1e, 0x8c909c1c, 0x0a32383a,
0x0c000c0c, 0x0e222c2e, 0x8ab2b83a, 0x4e626c2e,
0x8f939c1f, 0x4a52581a, 0xc2f2f032, 0x82929012,
0xc3f3f033, 0x49414809, 0x48707838, 0xccc0cc0c,
0x05111415, 0xcbf3f83b, 0x40707030, 0x45717435,
0x4f737c3f, 0x05313435, 0x00101010, 0x03030003,
0x44606424, 0x4d616c2d, 0xc6c2c406, 0x44707434,
0xc5d1d415, 0x84b0b434, 0xcae2e82a, 0x09010809,
0x46727436, 0x09111819, 0xcef2fc3e, 0x40404000,
0x02121012, 0xc0e0e020, 0x8db1bc3d, 0x05010405,
0xcaf2f83a, 0x01010001, 0xc0f0f030, 0x0a22282a,
0x4e525c1e, 0x89a1a829, 0x46525416, 0x43434003,
0x85818405, 0x04101414, 0x89818809, 0x8b93981b,
0x80b0b030, 0xc5e1e425, 0x48404808, 0x49717839,
0x87939417, 0xccf0fc3c, 0x0e121c1e, 0x82828002,
0x01212021, 0x8c808c0c, 0x0b13181b, 0x4f535c1f,
0x47737437, 0x44505414, 0x82b2b032, 0x0d111c1d,
0x05212425, 0x4f434c0f, 0x00000000, 0x46424406,
0xcde1ec2d, 0x48505818, 0x42525012, 0xcbe3e82b,
0x4e727c3e, 0xcad2d81a, 0xc9c1c809, 0xcdf1fc3d,
0x00303030, 0x85919415, 0x45616425, 0x0c303c3c,
0x86b2b436, 0xc4e0e424, 0x8bb3b83b, 0x4c707c3c,
0x0e020c0e, 0x40505010, 0x09313839, 0x06222426,
0x02323032, 0x84808404, 0x49616829, 0x83939013,
0x07333437, 0xc7e3e427, 0x04202424, 0x84a0a424,
0xcbc3c80b, 0x43535013, 0x0a02080a, 0x87838407,
0xc9d1d819, 0x4c404c0c, 0x83838003, 0x8f838c0f,
0xcec2cc0e, 0x0b33383b, 0x4a42480a, 0x87b3b437,
};
static const u32 KC[SEED_NUM_KCONSTANTS] = {
0x9e3779b9, 0x3c6ef373, 0x78dde6e6, 0xf1bbcdcc,
0xe3779b99, 0xc6ef3733, 0x8dde6e67, 0x1bbcdccf,
0x3779b99e, 0x6ef3733c, 0xdde6e678, 0xbbcdccf1,
0x779b99e3, 0xef3733c6, 0xde6e678d, 0xbcdccf1b,
};
#define OP(X1, X2, X3, X4, rbase) \
t0 = X3 ^ ks[rbase]; \
t1 = X4 ^ ks[rbase+1]; \
t1 ^= t0; \
t1 = SS0[byte(t1, 0)] ^ SS1[byte(t1, 1)] ^ \
SS2[byte(t1, 2)] ^ SS3[byte(t1, 3)]; \
t0 += t1; \
t0 = SS0[byte(t0, 0)] ^ SS1[byte(t0, 1)] ^ \
SS2[byte(t0, 2)] ^ SS3[byte(t0, 3)]; \
t1 += t0; \
t1 = SS0[byte(t1, 0)] ^ SS1[byte(t1, 1)] ^ \
SS2[byte(t1, 2)] ^ SS3[byte(t1, 3)]; \
t0 += t1; \
X1 ^= t0; \
X2 ^= t1;
static int seed_set_key(struct crypto_tfm *tfm, const u8 *in_key,
unsigned int key_len)
{
struct seed_ctx *ctx = crypto_tfm_ctx(tfm);
u32 *keyout = ctx->keysched;
const __be32 *key = (const __be32 *)in_key;
u32 i, t0, t1, x1, x2, x3, x4;
x1 = be32_to_cpu(key[0]);
x2 = be32_to_cpu(key[1]);
x3 = be32_to_cpu(key[2]);
x4 = be32_to_cpu(key[3]);
for (i = 0; i < SEED_NUM_KCONSTANTS; i++) {
t0 = x1 + x3 - KC[i];
t1 = x2 + KC[i] - x4;
*(keyout++) = SS0[byte(t0, 0)] ^ SS1[byte(t0, 1)] ^
SS2[byte(t0, 2)] ^ SS3[byte(t0, 3)];
*(keyout++) = SS0[byte(t1, 0)] ^ SS1[byte(t1, 1)] ^
SS2[byte(t1, 2)] ^ SS3[byte(t1, 3)];
if (i % 2 == 0) {
t0 = x1;
x1 = (x1 >> 8) ^ (x2 << 24);
x2 = (x2 >> 8) ^ (t0 << 24);
} else {
t0 = x3;
x3 = (x3 << 8) ^ (x4 >> 24);
x4 = (x4 << 8) ^ (t0 >> 24);
}
}
return 0;
}
/* encrypt a block of text */
static void seed_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
const struct seed_ctx *ctx = crypto_tfm_ctx(tfm);
const __be32 *src = (const __be32 *)in;
__be32 *dst = (__be32 *)out;
u32 x1, x2, x3, x4, t0, t1;
const u32 *ks = ctx->keysched;
x1 = be32_to_cpu(src[0]);
x2 = be32_to_cpu(src[1]);
x3 = be32_to_cpu(src[2]);
x4 = be32_to_cpu(src[3]);
OP(x1, x2, x3, x4, 0);
OP(x3, x4, x1, x2, 2);
OP(x1, x2, x3, x4, 4);
OP(x3, x4, x1, x2, 6);
OP(x1, x2, x3, x4, 8);
OP(x3, x4, x1, x2, 10);
OP(x1, x2, x3, x4, 12);
OP(x3, x4, x1, x2, 14);
OP(x1, x2, x3, x4, 16);
OP(x3, x4, x1, x2, 18);
OP(x1, x2, x3, x4, 20);
OP(x3, x4, x1, x2, 22);
OP(x1, x2, x3, x4, 24);
OP(x3, x4, x1, x2, 26);
OP(x1, x2, x3, x4, 28);
OP(x3, x4, x1, x2, 30);
dst[0] = cpu_to_be32(x3);
dst[1] = cpu_to_be32(x4);
dst[2] = cpu_to_be32(x1);
dst[3] = cpu_to_be32(x2);
}
/* decrypt a block of text */
static void seed_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
const struct seed_ctx *ctx = crypto_tfm_ctx(tfm);
const __be32 *src = (const __be32 *)in;
__be32 *dst = (__be32 *)out;
u32 x1, x2, x3, x4, t0, t1;
const u32 *ks = ctx->keysched;
x1 = be32_to_cpu(src[0]);
x2 = be32_to_cpu(src[1]);
x3 = be32_to_cpu(src[2]);
x4 = be32_to_cpu(src[3]);
OP(x1, x2, x3, x4, 30);
OP(x3, x4, x1, x2, 28);
OP(x1, x2, x3, x4, 26);
OP(x3, x4, x1, x2, 24);
OP(x1, x2, x3, x4, 22);
OP(x3, x4, x1, x2, 20);
OP(x1, x2, x3, x4, 18);
OP(x3, x4, x1, x2, 16);
OP(x1, x2, x3, x4, 14);
OP(x3, x4, x1, x2, 12);
OP(x1, x2, x3, x4, 10);
OP(x3, x4, x1, x2, 8);
OP(x1, x2, x3, x4, 6);
OP(x3, x4, x1, x2, 4);
OP(x1, x2, x3, x4, 2);
OP(x3, x4, x1, x2, 0);
dst[0] = cpu_to_be32(x3);
dst[1] = cpu_to_be32(x4);
dst[2] = cpu_to_be32(x1);
dst[3] = cpu_to_be32(x2);
}
static struct crypto_alg seed_alg = {
.cra_name = "seed",
.cra_driver_name = "seed-generic",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = SEED_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct seed_ctx),
.cra_alignmask = 3,
.cra_module = THIS_MODULE,
.cra_u = {
.cipher = {
.cia_min_keysize = SEED_KEY_SIZE,
.cia_max_keysize = SEED_KEY_SIZE,
.cia_setkey = seed_set_key,
.cia_encrypt = seed_encrypt,
.cia_decrypt = seed_decrypt
}
}
};
static int __init seed_init(void)
{
return crypto_register_alg(&seed_alg);
}
static void __exit seed_fini(void)
{
crypto_unregister_alg(&seed_alg);
}
module_init(seed_init);
module_exit(seed_fini);
MODULE_DESCRIPTION("SEED Cipher Algorithm");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Hye-Shik Chang <perky@FreeBSD.org>, Kim Hyun <hkim@kisa.or.kr>");
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...