Revision e31f6456c01c76f154e1b25cd54df97809a49edb authored by Amar Singhal on 20 July 2018, 19:15:18 UTC, committed by Johannes Berg on 24 July 2018, 07:11:31 UTC
Currently user regulatory hint is ignored if all wiphys in the system are self managed. But the hint is not ignored if there is no wiphy in the system. This affects the global regulatory setting. Global regulatory setting needs to be maintained so that it can be applied to a new wiphy entering the system. Therefore, do not ignore user regulatory setting even if all wiphys in the system are self managed. Signed-off-by: Amar Singhal <asinghal@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
1 parent 5cf3006
sm4_generic.c
// SPDX-License-Identifier: GPL-2.0
/*
* SM4 Cipher Algorithm.
*
* Copyright (C) 2018 ARM Limited or its affiliates.
* All rights reserved.
*/
#include <crypto/sm4.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/crypto.h>
#include <asm/byteorder.h>
#include <asm/unaligned.h>
static const u32 fk[4] = {
0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc
};
static const u8 sbox[256] = {
0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7,
0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,
0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3,
0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99,
0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a,
0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62,
0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95,
0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6,
0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba,
0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8,
0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b,
0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35,
0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2,
0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87,
0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52,
0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e,
0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5,
0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1,
0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55,
0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3,
0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60,
0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f,
0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f,
0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51,
0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f,
0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8,
0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd,
0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0,
0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e,
0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84,
0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20,
0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48
};
static const u32 ck[] = {
0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
};
static u32 sm4_t_non_lin_sub(u32 x)
{
int i;
u8 *b = (u8 *)&x;
for (i = 0; i < 4; ++i)
b[i] = sbox[b[i]];
return x;
}
static u32 sm4_key_lin_sub(u32 x)
{
return x ^ rol32(x, 13) ^ rol32(x, 23);
}
static u32 sm4_enc_lin_sub(u32 x)
{
return x ^ rol32(x, 2) ^ rol32(x, 10) ^ rol32(x, 18) ^ rol32(x, 24);
}
static u32 sm4_key_sub(u32 x)
{
return sm4_key_lin_sub(sm4_t_non_lin_sub(x));
}
static u32 sm4_enc_sub(u32 x)
{
return sm4_enc_lin_sub(sm4_t_non_lin_sub(x));
}
static u32 sm4_round(const u32 *x, const u32 rk)
{
return x[0] ^ sm4_enc_sub(x[1] ^ x[2] ^ x[3] ^ rk);
}
/**
* crypto_sm4_expand_key - Expands the SM4 key as described in GB/T 32907-2016
* @ctx: The location where the computed key will be stored.
* @in_key: The supplied key.
* @key_len: The length of the supplied key.
*
* Returns 0 on success. The function fails only if an invalid key size (or
* pointer) is supplied.
*/
int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key,
unsigned int key_len)
{
u32 rk[4], t;
const u32 *key = (u32 *)in_key;
int i;
if (key_len != SM4_KEY_SIZE)
return -EINVAL;
for (i = 0; i < 4; ++i)
rk[i] = get_unaligned_be32(&key[i]) ^ fk[i];
for (i = 0; i < 32; ++i) {
t = rk[0] ^ sm4_key_sub(rk[1] ^ rk[2] ^ rk[3] ^ ck[i]);
ctx->rkey_enc[i] = t;
rk[0] = rk[1];
rk[1] = rk[2];
rk[2] = rk[3];
rk[3] = t;
}
for (i = 0; i < 32; ++i)
ctx->rkey_dec[i] = ctx->rkey_enc[31 - i];
return 0;
}
EXPORT_SYMBOL_GPL(crypto_sm4_expand_key);
/**
* crypto_sm4_set_key - Set the AES key.
* @tfm: The %crypto_tfm that is used in the context.
* @in_key: The input key.
* @key_len: The size of the key.
*
* Returns 0 on success, on failure the %CRYPTO_TFM_RES_BAD_KEY_LEN flag in tfm
* is set. The function uses crypto_sm4_expand_key() to expand the key.
* &crypto_sm4_ctx _must_ be the private data embedded in @tfm which is
* retrieved with crypto_tfm_ctx().
*/
int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
unsigned int key_len)
{
struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
u32 *flags = &tfm->crt_flags;
int ret;
ret = crypto_sm4_expand_key(ctx, in_key, key_len);
if (!ret)
return 0;
*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
return -EINVAL;
}
EXPORT_SYMBOL_GPL(crypto_sm4_set_key);
static void sm4_do_crypt(const u32 *rk, u32 *out, const u32 *in)
{
u32 x[4], i, t;
for (i = 0; i < 4; ++i)
x[i] = get_unaligned_be32(&in[i]);
for (i = 0; i < 32; ++i) {
t = sm4_round(x, rk[i]);
x[0] = x[1];
x[1] = x[2];
x[2] = x[3];
x[3] = t;
}
for (i = 0; i < 4; ++i)
put_unaligned_be32(x[3 - i], &out[i]);
}
/* encrypt a block of text */
void crypto_sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
const struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
sm4_do_crypt(ctx->rkey_enc, (u32 *)out, (u32 *)in);
}
EXPORT_SYMBOL_GPL(crypto_sm4_encrypt);
/* decrypt a block of text */
void crypto_sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
const struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
sm4_do_crypt(ctx->rkey_dec, (u32 *)out, (u32 *)in);
}
EXPORT_SYMBOL_GPL(crypto_sm4_decrypt);
static struct crypto_alg sm4_alg = {
.cra_name = "sm4",
.cra_driver_name = "sm4-generic",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = SM4_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct crypto_sm4_ctx),
.cra_module = THIS_MODULE,
.cra_u = {
.cipher = {
.cia_min_keysize = SM4_KEY_SIZE,
.cia_max_keysize = SM4_KEY_SIZE,
.cia_setkey = crypto_sm4_set_key,
.cia_encrypt = crypto_sm4_encrypt,
.cia_decrypt = crypto_sm4_decrypt
}
}
};
static int __init sm4_init(void)
{
return crypto_register_alg(&sm4_alg);
}
static void __exit sm4_fini(void)
{
crypto_unregister_alg(&sm4_alg);
}
module_init(sm4_init);
module_exit(sm4_fini);
MODULE_DESCRIPTION("SM4 Cipher Algorithm");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS_CRYPTO("sm4");
MODULE_ALIAS_CRYPTO("sm4-generic");
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