HKDF< T > Class Template Reference

Extract-and-Expand Key Derivation Function (HKDF) More...

#include <hkdf.h>

Inheritance diagram for HKDF< T >:

Collaboration diagram for HKDF< T >:

Public Member Functions
size_t	MaxDerivedKeyLength () const
	maximum number of bytes which can be produced under a secuirty context More...
bool	Usesinfo () const
unsigned int	DeriveKey (byte *derived, size_t derivedLen, const byte *secret, size_t secretLen, const byte *salt, size_t saltLen, const byte *info, size_t infoLen) const
	derive a key from secret More...
Public Member Functions inherited from KeyDerivationFunction
virtual	~KeyDerivationFunction ()

Static Public Member Functions
static const char *	StaticAlgorithmName ()

Protected Types
typedef byte	NullVectorType[SALTSIZE]

Static Protected Member Functions
static const NullVectorType &	GetNullVector ()

Detailed Description

template<class T>
class HKDF< T >

Extract-and-Expand Key Derivation Function (HKDF)

Template Parameters

T	HashTransformation class

See also

Cryptographic Extraction and Key Derivation: The HKDF Scheme and HMAC-based Extract-and-Expand Key Derivation Function (HKDF)

Since

Crypto++ 5.6.3

Definition at line 36 of file hkdf.h.

Member Typedef Documentation

template<class T>

typedef byte HKDF< T >::NullVectorType[SALTSIZE]

protected

Definition at line 52 of file hkdf.h.

Member Function Documentation

template<class T >

unsigned int HKDF< T >::DeriveKey ( byte *  derived, size_t  derivedLen, const byte *  secret, size_t  secretLen, const byte *  salt, size_t  saltLen, const byte *  info, size_t  infoLen  ) const

virtual

derive a key from secret

Implements KeyDerivationFunction.

Definition at line 60 of file hkdf.h.

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template<class T>

static const NullVectorType& HKDF< T >::GetNullVector ( )

inlinestaticprotected

Definition at line 53 of file hkdf.h.

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template<class T>

size_t HKDF< T >::MaxDerivedKeyLength ( ) const

inlinevirtual

maximum number of bytes which can be produced under a secuirty context

Implements KeyDerivationFunction.

Definition at line 45 of file hkdf.h.

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template<class T>

static const char* HKDF< T >::StaticAlgorithmName ( )

inlinestatic

Definition at line 41 of file hkdf.h.

template<class T>

bool HKDF< T >::Usesinfo ( ) const

inlinevirtual

Implements KeyDerivationFunction.

Definition at line 46 of file hkdf.h.

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

• src/cryptopp/hkdf.h