ndnph::AesGcmIvHelper Class Reference

AES-GCM Initialization Vector generator and checker. More...

#include <iv.hpp>

Public Types
using	IvLen = std::integral_constant< size_t, 12 >
	IV length.
using	BlockSize = std::integral_constant< size_t, 16 >
	AES-GCM block size.

Public Member Functions
bool	randomize ()
	Randomize the random number portion.
bool	write (uint8_t room[12])
	Write IV to room .
bool	advance (size_t size)
	Advance the counter portion.
bool	check (const uint8_t *iv, size_t size)
	Check received IV.

Public Attributes
uint64_t	random = 0
uint32_t	counter = 0

Detailed Description

AES-GCM Initialization Vector generator and checker.

IV is 12 octets. Other sizes are not supported. IV is constructed from an 8-octet random number and a 4-octet counter. The random number portion is expected to stay the same. The counter portion is incremented for every encrypted block.

Member Typedef Documentation

BlockSize

using ndnph::AesGcmIvHelper::BlockSize = std::integral_constant<size_t, 16>

AES-GCM block size.

IvLen

using ndnph::AesGcmIvHelper::IvLen = std::integral_constant<size_t, 12>

IV length.

Member Function Documentation

advance()

bool ndnph::AesGcmIvHelper::advance ( size_t  size )

inline

Advance the counter portion.

Parameters

size	ciphertext size.

check()

bool ndnph::AesGcmIvHelper::check ( const uint8_t *  iv, size_t  size  )

inline

Check received IV.

Parameters

iv	received IV.
size	ciphertext size.

Postcondition

counter is advanced.

randomize()

bool ndnph::AesGcmIvHelper::randomize ( )

inline

Randomize the random number portion.

write()

bool ndnph::AesGcmIvHelper::write ( uint8_t  room[12] )

inline

Write IV to room .

Member Data Documentation

counter

uint32_t ndnph::AesGcmIvHelper::counter = 0

random

uint64_t ndnph::AesGcmIvHelper::random = 0

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

• /home/runner/work/esp8266ndn/NDNph/src/ndnph/keychain/iv.hpp