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...
 

Variables

const CipherAlgo seedCipherAlgo
 

Detailed Description

SEED encryption algorithm.

License

Copyright (C) 2010-2018 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
1.9.0

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; \
}
#define G(x)
Definition: seed.c:45
uint32_t t1

Definition at line 48 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 45 of file seed.c.

◆ TRACE_LEVEL

#define TRACE_LEVEL   CRYPTO_TRACE_LEVEL

Definition at line 34 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]contextPointer to the SEED context
[in]inputCiphertext block to decrypt
[out]outputPlaintext block resulting from decryption

Definition at line 342 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]contextPointer to the SEED context
[in]inputPlaintext block to encrypt
[out]outputCiphertext block resulting from encryption

Definition at line 294 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]contextPointer to the SEED context to initialize
[in]keyPointer to the key
[in]keyLenLength of the key
Returns
Error code

Definition at line 239 of file seed.c.

Variable Documentation

◆ seedCipherAlgo

const CipherAlgo seedCipherAlgo
Initial value:
=
{
"SEED",
sizeof(SeedContext),
NULL,
NULL,
}
void(* CipherAlgoDecryptBlock)(void *context, const uint8_t *input, uint8_t *output)
Definition: crypto.h:1030
#define SEED_BLOCK_SIZE
Definition: seed.h:36
error_t(* CipherAlgoInit)(void *context, const uint8_t *key, size_t keyLen)
Definition: crypto.h:1026
void seedDecryptBlock(SeedContext *context, const uint8_t *input, uint8_t *output)
Decrypt a 16-byte block using SEED algorithm.
Definition: seed.c:342
void(* CipherAlgoEncryptBlock)(void *context, const uint8_t *input, uint8_t *output)
Definition: crypto.h:1029
error_t seedInit(SeedContext *context, const uint8_t *key, size_t keyLen)
Initialize a SEED context using the supplied key.
Definition: seed.c:239
SEED algorithm context.
Definition: seed.h:50
void seedEncryptBlock(SeedContext *context, const uint8_t *input, uint8_t *output)
Encrypt a 16-byte block using SEED algorithm.
Definition: seed.c:294

Definition at line 217 of file seed.c.