trivium.c File Reference

Trivium stream cipher. More...

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

Go to the source code of this file.

Macros

#define TRACE_LEVEL   CRYPTO_TRACE_LEVEL
 
#define TRIVIUM_GET_BIT(s, n)   ((s[(n - 1) / 8] >> ((n - 1) % 8)) & 1)
 
#define TRIVIUM_SET_BIT(s, n, v)
 

Functions

error_t triviumInit (TriviumContext *context, const uint8_t *key, size_t keyLen, const uint8_t *iv, size_t ivLen)
 Initialize Trivium context using the supplied key and IV. More...
 
void triviumCipher (TriviumContext *context, const uint8_t *input, uint8_t *output, size_t length)
 Encrypt/decrypt data with the Trivium algorithm. More...
 
uint8_t triviumGenerateBit (TriviumContext *context)
 Generate one bit of key stream. More...
 
uint8_t triviumGenerateByte (TriviumContext *context)
 Generate one byte of key stream. More...
 
void triviumDeinit (TriviumContext *context)
 Release Trivium context. More...
 

Detailed Description

Trivium stream cipher.

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 trivium.c.

Macro Definition Documentation

◆ TRACE_LEVEL

#define TRACE_LEVEL   CRYPTO_TRACE_LEVEL

Definition at line 32 of file trivium.c.

◆ TRIVIUM_GET_BIT

#define TRIVIUM_GET_BIT (   s,
  n 
)    ((s[(n - 1) / 8] >> ((n - 1) % 8)) & 1)

Definition at line 42 of file trivium.c.

◆ TRIVIUM_SET_BIT

#define TRIVIUM_SET_BIT (   s,
  n,
 
)
Value:
s[(n - 1) / 8] = \
(s[(n - 1) / 8] & ~(1 << ((n - 1) % 8))) | (v) << ((n - 1) % 8)
uint8_t n
uint8_t s
Definition: ndp.h:345

Definition at line 45 of file trivium.c.

Function Documentation

◆ triviumCipher()

void triviumCipher ( TriviumContext context,
const uint8_t *  input,
uint8_t *  output,
size_t  length 
)

Encrypt/decrypt data with the Trivium algorithm.

Parameters
[in]contextPointer to the Trivium context
[in]inputPointer to the data to encrypt/decrypt (optional)
[in]outputPointer to the resulting data (optional)
[in]lengthNumber of bytes to be processed

Definition at line 117 of file trivium.c.

◆ triviumDeinit()

void triviumDeinit ( TriviumContext context)

Release Trivium context.

Parameters
[in]contextPointer to the Trivium context

Definition at line 239 of file trivium.c.

◆ triviumGenerateBit()

uint8_t triviumGenerateBit ( TriviumContext context)

Generate one bit of key stream.

Parameters
[in]contextPointer to the Trivium context
Returns
Key stream bit

Definition at line 154 of file trivium.c.

◆ triviumGenerateByte()

uint8_t triviumGenerateByte ( TriviumContext context)

Generate one byte of key stream.

Parameters
[in]contextPointer to the Trivium context
Returns
Key stream byte

Definition at line 215 of file trivium.c.

◆ triviumInit()

error_t triviumInit ( TriviumContext context,
const uint8_t *  key,
size_t  keyLen,
const uint8_t *  iv,
size_t  ivLen 
)

Initialize Trivium context using the supplied key and IV.

Parameters
[in]contextPointer to the Trivium context to initialize
[in]keyPointer to the key
[in]keyLenLength of the key (10 bytes)
[in]ivPointer to the initialization vector
[in]ivLenLength of the initialization vector (10 bytes)
Returns
Error code

Definition at line 59 of file trivium.c.