ProtocolPP::chacha20 Class Reference

Public Member Functions
	chacha20 (const uint8_t *key, const uint8_t *nonce, uint64_t counter)
	chacha20 (const uint8_t *ctx, uint32_t length)
virtual	~chacha20 ()=default
	Standard Deconstructor.
void	ProcessData (const uint8_t *input, uint8_t *output, uint32_t length)
void	context (uint8_t *context, uint32_t length=32)
	chacha20 (chacha20 &rhs)=delete
	chacha20 (const chacha20 &rhs)=delete

Constructor & Destructor Documentation

chacha20() [1/2]

ProtocolPP::chacha20::chacha20	(	const uint8_t *	key,
		const uint8_t *	nonce,
		uint64_t	counter
	)

Constructor for CHACHA20 algorithm

Parameters

key	- key for encryption
nonce	- initial value for the NONCE
counter	- initial counter value

chacha20() [2/2]

ProtocolPP::chacha20::chacha20	(	const uint8_t *	ctx,
		uint32_t	length
	)

Constructor for CHACHA20 algorithm with context

Parameters

ctx	- Context to re-initialize the engine with
length	- length of the context in bytes (must be 64)

Member Function Documentation

context()

void ProtocolPP::chacha20::context	(	uint8_t *	context,
		uint32_t	length = 32
	)

Function to return CHACHA20 state

Parameters

context	- state of the engine
length	- length up to 64 bytes of state. Length of 32 is needed for AEAD_CHACHA20_POLY1305

ProcessData()

void ProtocolPP::chacha20::ProcessData	(	const uint8_t *	input,
		uint8_t *	output,
		uint32_t	length
	)

Function to encrypt data with CHACHA20

Parameters

input	- plain/ciphertext
output	- resulting cipher/plaintext
length	- length of the data

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

• include/chacha20.h