#include <data_epoch.hpp>

Public Member Functions
	EpochKey ()=default

	EpochKey (decltype(keydata) keydata, uint16_t epoch)

	EpochKey (StaticKey key)

void	iterate ()

std::pair< StaticKey, StaticKey >	data_key (openvpn::CryptoAlgs::Type cipher)

EpochDataChannelCryptoContext	key_context (openvpn::SSLLib::Ctx libctx, openvpn::CryptoAlgs::Type cipher, int mode)

Public Attributes
std::array< uint8_t, SECRET_SIZE >	keydata {}

std::uint16_t	epoch = 0

Static Public Attributes
static constexpr int	SECRET_SIZE = 32

Detailed Description

Definition at line 102 of file data_epoch.hpp.

Constructor & Destructor Documentation

◆ EpochKey() [1/3]

openvpn::EpochKey::EpochKey ( )

default

◆ EpochKey() [2/3]

openvpn::EpochKey::EpochKey	(	decltype(keydata)	keydata,
		uint16_t	epoch
	)

inline

Constructs an epoch key with the given key material and epoch

Definition at line 117 of file data_epoch.hpp.

◆ EpochKey() [3/3]

openvpn::EpochKey::EpochKey ( openvpn::StaticKey key )

Constructs an epoch key with the given OpenVPNStaticKey as epoch 1 key.

Parameters

key	is assumed to be already prepared as the correct slice of the Data channel key using key.slice

Definition at line 155 of file data_epoch.cpp.

Member Function Documentation

◆ data_key()

std::pair< openvpn::StaticKey, openvpn::StaticKey > openvpn::EpochKey::data_key ( openvpn::CryptoAlgs::Type cipher )

Derives the data channel keys that are tied to the current epoch.

Returns: Key material for the encryption/decryption key and the implicit IV material

Definition at line 118 of file data_epoch.cpp.

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◆ iterate()

void openvpn::EpochKey::iterate ( )

Iterates the epoch key to make it E_n+1, ie increase the epoch by one and derive the new key material accordingly

Definition at line 104 of file data_epoch.cpp.

◆ key_context()

openvpn::EpochDataChannelCryptoContext openvpn::EpochKey::key_context	(	openvpn::SSLLib::Ctx	libctx,
		openvpn::CryptoAlgs::Type	cipher,
		int	mode
	)

Generate a context that can be used to encrypt or decrypt using this epoch

Definition at line 139 of file data_epoch.cpp.

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Member Data Documentation

◆ epoch

std::uint16_t openvpn::EpochKey::epoch = 0

Definition at line 109 of file data_epoch.hpp.

◆ keydata

std::array<uint8_t, SECRET_SIZE> openvpn::EpochKey::keydata {}

Definition at line 108 of file data_epoch.hpp.

◆ SECRET_SIZE

constexpr int openvpn::EpochKey::SECRET_SIZE = 32

staticconstexpr

Definition at line 106 of file data_epoch.hpp.

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

openvpn/crypto/data_epoch.hpp
openvpn/crypto/data_epoch.cpp

Public Member Functions

Public Attributes

Static Public Attributes