HMAC_DRBG pseudorandom number generator. More...

#include "core/crypto.h"
#include "mac/hmac.h"

Data Structures
struct	HmacDrbgContext
	HMAC_DRBG PRNG context. More...

Macros
#define	HMAC_DRBG_MAX_RESEED_INTERVAL 281474976710656ULL

#define	HMAC_DRBG_PRNG_ALGO (&hmacDrbgPrngAlgo)

Functions
error_t	hmacDrbgInit (HmacDrbgContext context, const HashAlgo hashAlgo)
	Initialize PRNG context. More...

error_t	hmacDrbgSeed (HmacDrbgContext context, const uint8_t seed, size_t length)
	Seed the PRNG state. More...

error_t	hmacDrbgSeedEx (HmacDrbgContext context, const uint8_t entropyInput, size_t entropyInputLen, const uint8_t nonce, size_t nonceLen, const uint8_t personalizationString, size_t personalizationStringLen)
	Seed the PRNG state (with nonce and personalization string) More...

error_t	hmacDrbgReseed (HmacDrbgContext context, const uint8_t seed, size_t length)
	Reseed the PRNG state. More...

error_t	hmacDrbgReseedEx (HmacDrbgContext context, const uint8_t entropyInput, size_t entropyInputLen, const uint8_t *additionalInput, size_t additionalInputLen)
	Reseed the PRNG state (with additional input) More...

error_t	hmacDrbgGenerate (HmacDrbgContext context, uint8_t output, size_t length)
	Generate pseudorandom data. More...

error_t	hmacDrbgGenerateEx (HmacDrbgContext context, const uint8_t additionalInput, size_t additionalInputLen, uint8_t *output, size_t outputLen)
	Generate pseudorandom data (with additional input) More...

void	hmacDrbgDeinit (HmacDrbgContext *context)
	Release PRNG context. More...

void	hmacDrbgUpdate (HmacDrbgContext context, const DataChunk providedData, uint_t providedDataLen)
	Update internal state. More...

Variables
const PrngAlgo	hmacDrbgPrngAlgo

Detailed Description

HMAC_DRBG pseudorandom number generator.

License

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

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: 2.5.4

Definition in file hmac_drbg.h.

Macro Definition Documentation

◆ HMAC_DRBG_MAX_RESEED_INTERVAL

#define HMAC_DRBG_MAX_RESEED_INTERVAL 281474976710656ULL

Definition at line 39 of file hmac_drbg.h.

◆ HMAC_DRBG_PRNG_ALGO

#define HMAC_DRBG_PRNG_ALGO (&hmacDrbgPrngAlgo)

Definition at line 42 of file hmac_drbg.h.

Function Documentation

◆ hmacDrbgDeinit()

void hmacDrbgDeinit ( HmacDrbgContext * context )

Release PRNG context.

Parameters

[in] context Pointer to the HMAC_DRBG context

Definition at line 401 of file hmac_drbg.c.

◆ hmacDrbgGenerate()

error_t hmacDrbgGenerate	(	HmacDrbgContext *	context,
		uint8_t *	output,
		size_t	length
	)

Generate pseudorandom data.

Parameters

[in]	context	Pointer to the HMAC_DRBG context
[out]	output	Buffer where to store the pseudorandom bytes
[in]	length	Requested number of bytes

Returns: Error code

Definition at line 287 of file hmac_drbg.c.

◆ hmacDrbgGenerateEx()

error_t hmacDrbgGenerateEx	(	HmacDrbgContext *	context,
		const uint8_t *	additionalInput,
		size_t	additionalInputLen,
		uint8_t *	output,
		size_t	outputLen
	)

Generate pseudorandom data (with additional input)

Parameters

[in]	context	Pointer to the HMAC_DRBG context
[in]	additionalInput	Additional input string received from the consuming application
[in]	additionalInputLen	Length of the additional input string, in bytes
[out]	output	Buffer where to store the pseudorandom bytes
[in]	outputLen	Requested number of bytes

Returns: Error code

Definition at line 306 of file hmac_drbg.c.

◆ hmacDrbgInit()

error_t hmacDrbgInit	(	HmacDrbgContext *	context,
		const HashAlgo *	hashAlgo
	)

Initialize PRNG context.

Parameters

[in]	context	Pointer to the HMAC_DRBG context to initialize
[in]	hashAlgo	Approved hash function

Returns: Error code

Definition at line 62 of file hmac_drbg.c.

◆ hmacDrbgReseed()

error_t hmacDrbgReseed	(	HmacDrbgContext *	context,
		const uint8_t *	seed,
		size_t	length
	)

Reseed the PRNG state.

Parameters

[in]	context	Pointer to the HMAC_DRBG context
[in]	seed	String of bits obtained from the randomness source
[in]	length	Length of the string, in bytes

Returns: Error code

Definition at line 209 of file hmac_drbg.c.

◆ hmacDrbgReseedEx()

error_t hmacDrbgReseedEx	(	HmacDrbgContext *	context,
		const uint8_t *	entropyInput,
		size_t	entropyInputLen,
		const uint8_t *	additionalInput,
		size_t	additionalInputLen
	)

Reseed the PRNG state (with additional input)

Parameters

[in]	context	Pointer to the HMAC_DRBG context
[in]	entropyInput	String of bits obtained from the randomness source
[in]	entropyInputLen	Length of the string, in bytes
[in]	additionalInput	Additional input string received from the consuming application
[in]	additionalInputLen	Length of the additional input string, in bytes

Returns: Error code

Definition at line 228 of file hmac_drbg.c.

◆ hmacDrbgSeed()

error_t hmacDrbgSeed	(	HmacDrbgContext *	context,
		const uint8_t *	seed,
		size_t	length
	)

Seed the PRNG state.

Parameters

[in]	context	Pointer to the HMAC_DRBG context
[in]	seed	String of bits obtained from the randomness source
[in]	length	Length of the string, in bytes

Returns: Error code

Definition at line 109 of file hmac_drbg.c.

◆ hmacDrbgSeedEx()

error_t hmacDrbgSeedEx	(	HmacDrbgContext *	context,
		const uint8_t *	entropyInput,
		size_t	entropyInputLen,
		const uint8_t *	nonce,
		size_t	nonceLen,
		const uint8_t *	personalizationString,
		size_t	personalizationStringLen
	)

Seed the PRNG state (with nonce and personalization string)

Parameters

[in]	context	Pointer to the HMAC_DRBG context
[in]	entropyInput	String of bits obtained from the randomness source
[in]	entropyInputLen	Length of the string, in bytes
[in]	nonce	Nonce
[in]	nonceLen	Length of the nonce, in bytes
[in]	personalizationString	Personalization string received from the consuming application
[in]	personalizationStringLen	Length of the personalization string, in bytes

Returns: Error code

Definition at line 131 of file hmac_drbg.c.

◆ hmacDrbgUpdate()

void hmacDrbgUpdate	(	HmacDrbgContext *	context,
		const DataChunk *	providedData,
		uint_t	providedDataLen
	)

Update internal state.

Parameters

[in]	context	Pointer to the HMAC_DRBG context
[in]	providedData	The data to be used
[in]	providedDataLen	Number of data chunks representing the data

Definition at line 422 of file hmac_drbg.c.

Variable Documentation

◆ hmacDrbgPrngAlgo

const PrngAlgo hmacDrbgPrngAlgo

extern

Definition at line 43 of file hmac_drbg.c.

Data Structures

Macros

Functions

Variables

Detailed Description

License

Macro Definition Documentation

◆ HMAC_DRBG_MAX_RESEED_INTERVAL

◆ HMAC_DRBG_PRNG_ALGO

Function Documentation

◆ hmacDrbgDeinit()

◆ hmacDrbgGenerate()

◆ hmacDrbgGenerateEx()

◆ hmacDrbgInit()

◆ hmacDrbgReseed()

◆ hmacDrbgReseedEx()

◆ hmacDrbgSeed()

◆ hmacDrbgSeedEx()

◆ hmacDrbgUpdate()

Variable Documentation

◆ hmacDrbgPrngAlgo