Class to implement KDF method hkdf. More...

#include <my_kdf.h>

Inheritance diagram for Key_hkdf_function:

Public Member Functions
	Key_hkdf_function (vector< string > *kdf_options)
	hkdf Constructor. More...

virtual	~Key_hkdf_function () override

int	derive_key (const unsigned char key, const unsigned int key_length, unsigned char rkey, unsigned int key_size) override

int	validate_options () override

Public Member Functions inherited from Key_derivation_function
virtual	~Key_derivation_function ()

Private Attributes
string	salt_

string	info_

Additional Inherited Members
Protected Attributes inherited from Key_derivation_function
vector< string > *	kdf_options_ {nullptr}

bool	options_valid_ {false}

Detailed Description

Class to implement KDF method hkdf.

Constructor & Destructor Documentation

◆ Key_hkdf_function()

Key_hkdf_function::Key_hkdf_function ( vector< string > * kdf_options )

hkdf Constructor.

Parameters

kdf_options options

kdf_options has following KDF options:

KDF function name
KDF salt: The salt. Salts prevent attacks based on dictionaries of common passwords and attacks based on rainbow tables. It is a public value that can be safely stored along with the encryption key.
KDF info: The context and application specific information.

◆ ~Key_hkdf_function()

virtual Key_hkdf_function::~Key_hkdf_function ( )

inlineoverridevirtual

Member Function Documentation

◆ derive_key()

int Key_hkdf_function::derive_key	(	const unsigned char *	key,
		const unsigned int	key_length,
		unsigned char *	rkey,
		unsigned int	key_size
	)

overridevirtual

Implements Key_derivation_function.

◆ validate_options()

int Key_hkdf_function::validate_options ( )

overridevirtual

Implements Key_derivation_function.

Member Data Documentation

◆ info_

string Key_hkdf_function::info_

private

◆ salt_

string Key_hkdf_function::salt_