seed.c File Reference

SEED encryption algorithm. More...

#include "core/crypto.h"
#include "cipher/seed.h"
#include "debug.h"

Go to the source code of this file.

Macros
#define	TRACE_LEVEL   CRYPTO_TRACE_LEVEL
#define	G(x)   (ss0[(x) & 0xFF] ^ ss1[((x) >> 8) & 0xFF] ^ ss2[((x) >> 16) & 0xFF] ^ ss3[((x) >> 24) & 0xFF])
#define	F(k0, k1, r0, r1, t0, t1)

Functions
error_t	seedInit (SeedContext *context, const uint8_t *key, size_t keyLen)
	Initialize a SEED context using the supplied key. More...
void	seedEncryptBlock (SeedContext *context, const uint8_t *input, uint8_t *output)
	Encrypt a 16-byte block using SEED algorithm. More...
void	seedDecryptBlock (SeedContext *context, const uint8_t *input, uint8_t *output)
	Decrypt a 16-byte block using SEED algorithm. More...
void	seedDeinit (SeedContext *context)
	Release SEED context. More...

Variables
const CipherAlgo	seedCipherAlgo

Detailed Description

SEED 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.

Description

SEED is a 128-bit symmetric key block cipher. Refer to RFC 4269

Author

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

Version

2.4.4

Definition in file seed.c.

Macro Definition Documentation

F

#define F	(		k0,
			k1,
			r0,
			r1,
			t0,
			t1
	)

Value:

{ \
   t1 = (r0 ^ k0) ^ (r1 ^ k1); \
   t1 = G(t1); \
   t0 = t1 + (r0 ^ k0); \
   t0 = G(t0); \
   t1 += t0; \
   t1 = G(t1); \
   t0 += t1; \
}

Definition at line 50 of file seed.c.

G

#define G

(

x

)

(ss0[(x) & 0xFF] ^ ss1[((x) >> 8) & 0xFF] ^ ss2[((x) >> 16) & 0xFF] ^ ss3[((x) >> 24) & 0xFF])

Definition at line 47 of file seed.c.

TRACE_LEVEL

#define TRACE_LEVEL   CRYPTO_TRACE_LEVEL

Definition at line 36 of file seed.c.

Function Documentation

seedDecryptBlock()

void seedDecryptBlock	(	SeedContext *	context,
		const uint8_t *	input,
		uint8_t *	output
	)

Decrypt a 16-byte block using SEED algorithm.

Parameters

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

Definition at line 349 of file seed.c.

seedDeinit()

void seedDeinit

(

SeedContext *

context

)

Release SEED context.

Parameters

[in]

context

Pointer to the SEED context

Definition at line 396 of file seed.c.

seedEncryptBlock()

void seedEncryptBlock	(	SeedContext *	context,
		const uint8_t *	input,
		uint8_t *	output
	)

Encrypt a 16-byte block using SEED algorithm.

Parameters

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

Definition at line 300 of file seed.c.

seedInit()

error_t seedInit	(	SeedContext *	context,
		const uint8_t *	key,
		size_t	keyLen
	)

Initialize a SEED context using the supplied key.

Parameters

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

Returns

Error code

Definition at line 242 of file seed.c.

Variable Documentation

seedCipherAlgo

const CipherAlgo seedCipherAlgo

Initial value:

=
{
   "SEED",
   sizeof(SeedContext),
   CIPHER_ALGO_TYPE_BLOCK,
   SEED_BLOCK_SIZE,
   (CipherAlgoInit) seedInit,
   NULL,
   NULL,
   (CipherAlgoEncryptBlock) seedEncryptBlock,
   (CipherAlgoDecryptBlock) seedDecryptBlock,
   (CipherAlgoDeinit) seedDeinit
}

Definition at line 219 of file seed.c.