#include <cRandomDSA.h>

Inheritance diagram for GrayLib::cRandomDSA:

Public Member Functions
	cRandomDSA () noexcept

	~cRandomDSA ()

void	SetZeroHmac () noexcept

HRESULT	InitRandomHmac (const cHashTypeDef pHashType, const BYTE data, size_t data_len)

virtual HRESULT	GetNoise (void *pOut, size_t out_len) override
	fill array with random bytes. return # bytes filled. More...

void	UpdateRandomReseed2 (const BYTE *pAddData, size_t add_len)

HRESULT	UpdateRandomReseed1 (const BYTE *pAddData, size_t add_len)

	UNITTEST_FRIEND (cRandomDSA)

Public Member Functions inherited from GrayLib::cRandomMixerBase
	cRandomMixerBase () noexcept

virtual	~cRandomMixerBase ()

void	put_PredictionResistance (bool bPredictionResistance) noexcept

Public Attributes
cHashWrap	m_HashCtx
	HMAC context (inc. K) cHashSHA1. More...

BYTE	m_V [cHashWrap::k_HashSizeMax]
	V in the spec. More...

Public Attributes inherited from GrayLib::cRandomMixerBase
int	m_nReSeedCounter
	reseed counter More...

bool	m_bPredictionResistance
	enable prediction resistance (Automatic reseed before every random generation) More...

size_t	m_nEntropyLen
	entropy bytes grabbed on each (re)seed More...

int	m_nReSeedInterval
	reseed interval More...

IRandomNoise *	m_pRandom
	context for the entropy function More...

Constructor & Destructor Documentation

◆ cRandomDSA()

GrayLib::cRandomDSA::cRandomDSA ( )

inlinenoexcept

◆ ~cRandomDSA()

GrayLib::cRandomDSA::~cRandomDSA ( )

inline

Member Function Documentation

◆ GetNoise()

HRESULT GrayLib::cRandomDSA::GetNoise	(	void *	pData,
		size_t	iSize
	)

overridevirtual

fill array with random bytes. return # bytes filled.

HMAC_DRBG random function with optional additional data: 10.1.2.5 (arabic) + 9.3 (Roman)

Note: Automatically reseeds if reseed_counter is reached or PR is enabled.

pOut = Buffer to fill
out_len = Length of the buffer

Returns: 0 if successful, or FVE_E_FIPS_RNG_CHECK_FAILED, or DISP_E_OVERFLOW

< Maximum number of requested bytes per call

Implements Gray::IRandomNoise.

◆ InitRandomHmac()

HRESULT GrayLib::cRandomDSA::InitRandomHmac	(	const cHashTypeDef *	pHashType,
		const BYTE *	data,
		size_t	data_len
	)

Simplified HMAC_DRBG initialization (for use with deterministic ECDSA) Initialization of simplified HMAC_DRBG (never reseeds). (For use with deterministic ECDSA.)

pHashType = Hash algorithm to use for HMAC_DRBG
data = Concatenation of entropy string and additional data
data_len = Length of data in bytes
Returns
0 if successful, or E_POINTER, or E_OUTOFMEMORY.

◆ SetZeroHmac()

void GrayLib::cRandomDSA::SetZeroHmac ( )

inlinenoexcept

◆ UNITTEST_FRIEND()

GrayLib::cRandomDSA::UNITTEST_FRIEND ( cRandomDSA )

◆ UpdateRandomReseed1()

HRESULT GrayLib::cRandomDSA::UpdateRandomReseed1	(	const BYTE *	pAddData,
		size_t	add_len
	)

HMAC_DRBG reseeding (extracts data from entropy source)

pAddData = Additional data to add to state (Can be NULL)
add_len = Length of additional data
Returns
0 if successful, or FVE_E_FIPS_RNG_CHECK_FAILED

< Maximum number of additional input bytes

< Maximum size of (re)seed buffer

◆ UpdateRandomReseed2()

void GrayLib::cRandomDSA::UpdateRandomReseed2	(	const BYTE *	pAddData,
		size_t	add_len
	)

HMAC_DRBG update state

pAddData = Additional data to update state with, or NULL
add_len = Length of additional data, or 0
Note
Additional data is optional, pass NULL and 0 as second third argument if no additional data is being used.

Member Data Documentation

◆ m_HashCtx

cHashWrap GrayLib::cRandomDSA::m_HashCtx

HMAC context (inc. K) cHashSHA1.

◆ m_V

BYTE GrayLib::cRandomDSA::m_V[cHashWrap::k_HashSizeMax]

V in the spec.

The documentation for this class was generated from the following files:

c:/Dennis/Source/Gray/GrayLib/include/Key/cRandomDSA.h
c:/Dennis/Source/Gray/GrayLib/src/Key/cRandomDSA.cpp

Public Member Functions

Public Attributes