usual/crypto/chacha.h File Reference

ChaCha cipher. More...

Data Structures
struct	ChaCha
	ChaCha state. More...
Functions
void	chacha_set_key_256 (struct ChaCha *ctx, const void *key)
	Set 256-bit key.
void	chacha_set_key_128 (struct ChaCha *ctx, const void *key)
	Set 128-bit key.
void	chacha_set_nonce (struct ChaCha *ctx, uint32_t counter_low, uint32_t counter_high, const void *iv)
	Set 2x32-bit counter and 8-byte IV.
void	chacha_keystream (struct ChaCha *ctx, void *stream, size_t bytes)
	Extract plain keystream.
void	chacha_keystream_xor (struct ChaCha *ctx, const void *plain, void *encrypted, size_t bytes)
	XOR data with keystream.

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Detailed Description

ChaCha cipher.

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Function Documentation

void chacha_set_key_256	(	struct ChaCha *	ctx,
		const void *	key
	)

Set 256-bit key.

void chacha_set_key_128	(	struct ChaCha *	ctx,
		const void *	key
	)

Set 128-bit key.

void chacha_set_nonce	(	struct ChaCha *	ctx,
		uint32_t	counter_low,
		uint32_t	counter_high,
		const void *	iv
	)

Set 2x32-bit counter and 8-byte IV.

void chacha_keystream	(	struct ChaCha *	ctx,
		void *	stream,
		size_t	bytes
	)

Extract plain keystream.

void chacha_keystream_xor	(	struct ChaCha *	ctx,
		const void *	plain,
		void *	encrypted,
		size_t	bytes
	)

XOR data with keystream.