linux-imx

// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * Cryptographic API.

 *

 * SEED Cipher Algorithm.

 *

 * 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,