sm4.c File Reference

SM4 encryption algorithm. More...

#include "core/crypto.h"
#include "cipher/sm4.h"

Go to the source code of this file.

Macros
#define	TRACE_LEVEL   CRYPTO_TRACE_LEVEL
#define	TAU(a)
#define	L(b)   ((b) ^ ROL32(b, 2) ^ ROL32(b, 10) ^ ROL32(b, 18) ^ ROL32(b, 24))
#define	LP(b)   ((b) ^ ROL32(b, 13) ^ ROL32(b, 23))
#define	F(x0, x1, x2, x3, rk)

Functions
__weak_func error_t	sm4Init (Sm4Context *context, const uint8_t *key, size_t keyLen)
	Key expansion. More...
__weak_func void	sm4EncryptBlock (Sm4Context *context, const uint8_t *input, uint8_t *output)
	Encrypt a 16-byte block using SM4 algorithm. More...
__weak_func void	sm4DecryptBlock (Sm4Context *context, const uint8_t *input, uint8_t *output)
	Decrypt a 16-byte block using SM4 algorithm. More...
__weak_func void	sm4Deinit (Sm4Context *context)
	Release SM4 context. More...

Variables
const uint8_t	SM4_ECB_OID [8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x01}
const uint8_t	SM4_CBC_OID [8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x02}
const uint8_t	SM4_OFB_OID [8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x03}
const uint8_t	SM4_CFB_OID [8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x04}
const uint8_t	SM4_CTR_OID [8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x07}
const uint8_t	SM4_GCM_OID [8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x08}
const uint8_t	SM4_CCM_OID [8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x09}
const uint8_t	SM4_XTS_OID [8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x0A}
const CipherAlgo	sm4CipherAlgo

Detailed Description

SM4 encryption algorithm.

License

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

Copyright (C) 2010-2024 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneCRYPTO Open.

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.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Author

Oryx Embedded SARL (www.oryx-embedded.com)

Version

2.4.0

Definition in file sm4.c.

Macro Definition Documentation

F

#define F	(		x0,
			x1,
			x2,
			x3,
			rk
	)

Value:

{ \
   uint32_t temp; \
   temp = (x1) ^ (x2) ^ (x3) ^ (rk); \
   temp = TAU(temp); \
   x0 ^= L(temp); \
}

Definition at line 52 of file sm4.c.

L

#define L

(

b

)

((b) ^ ROL32(b, 2) ^ ROL32(b, 10) ^ ROL32(b, 18) ^ ROL32(b, 24))

Definition at line 48 of file sm4.c.

LP

#define LP

(

b

)

((b) ^ ROL32(b, 13) ^ ROL32(b, 23))

Definition at line 49 of file sm4.c.

TAU

#define TAU

(

a

)

Value:

   ((uint32_t) s[(a) & 0xFF] | \
   ((uint32_t) s[((a) >> 8) & 0xFF] << 8) | \
   ((uint32_t) s[((a) >> 16) & 0xFF] << 16) | \
   ((uint32_t) s[((a) >> 24) & 0xFF] << 24))

Definition at line 42 of file sm4.c.

TRACE_LEVEL

#define TRACE_LEVEL   CRYPTO_TRACE_LEVEL

Definition at line 32 of file sm4.c.

Function Documentation

sm4DecryptBlock()

__weak_func void sm4DecryptBlock	(	Sm4Context *	context,
		const uint8_t *	input,
		uint8_t *	output
	)

Decrypt a 16-byte block using SM4 algorithm.

Parameters

[in]	context	Pointer to the SM4 context
[in]	input	Ciphertext block to decrypt
[out]	output	Plaintext block resulting from decryption

Definition at line 218 of file sm4.c.

sm4Deinit()

__weak_func void sm4Deinit

(

Sm4Context *

context

)

Release SM4 context.

Parameters

[in]

context

Pointer to the SM4 context

Definition at line 256 of file sm4.c.

sm4EncryptBlock()

__weak_func void sm4EncryptBlock	(	Sm4Context *	context,
		const uint8_t *	input,
		uint8_t *	output
	)

Encrypt a 16-byte block using SM4 algorithm.

Parameters

[in]	context	Pointer to the SM4 context
[in]	input	Plaintext block to encrypt
[out]	output	Ciphertext block resulting from encryption

Definition at line 179 of file sm4.c.

sm4Init()

__weak_func error_t sm4Init	(	Sm4Context *	context,
		const uint8_t *	key,
		size_t	keyLen
	)

Key expansion.

Parameters

[in]	context	Pointer to the SM4 context to initialize
[in]	key	Pointer to the key
[in]	keyLen	Length of the key

Returns

Error code

Definition at line 137 of file sm4.c.

Variable Documentation

SM4_CBC_OID

const uint8_t SM4_CBC_OID = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x02}

Definition at line 99 of file sm4.c.

SM4_CCM_OID

const uint8_t SM4_CCM_OID[8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x09}

Definition at line 109 of file sm4.c.

SM4_CFB_OID

const uint8_t SM4_CFB_OID[8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x04}

Definition at line 103 of file sm4.c.

SM4_CTR_OID

const uint8_t SM4_CTR_OID[8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x07}

Definition at line 105 of file sm4.c.

SM4_ECB_OID

const uint8_t SM4_ECB_OID[8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x01}

Definition at line 97 of file sm4.c.

SM4_GCM_OID

const uint8_t SM4_GCM_OID[8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x08}

Definition at line 107 of file sm4.c.

SM4_OFB_OID

const uint8_t SM4_OFB_OID[8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x03}

Definition at line 101 of file sm4.c.

SM4_XTS_OID

const uint8_t SM4_XTS_OID[8] = {0x2A, 0x81, 0x1C, 0xCF, 0x55, 0x01, 0x68, 0x0A}

Definition at line 111 of file sm4.c.

sm4CipherAlgo

const CipherAlgo sm4CipherAlgo

Initial value:

=
{
   "SM4",
   sizeof(Sm4Context),
   CIPHER_ALGO_TYPE_BLOCK,
   SM4_BLOCK_SIZE,
   (CipherAlgoInit) sm4Init,
   NULL,
   NULL,
   (CipherAlgoEncryptBlock) sm4EncryptBlock,
   (CipherAlgoDecryptBlock) sm4DecryptBlock,
   (CipherAlgoDeinit) sm4Deinit
}

Definition at line 114 of file sm4.c.