salmon-aes.h File Reference

Encrypt and decrypt data with AES-256 in CTR mode using pure C. More...

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Functions
void	aes_key_expand (const unsigned char *key, unsigned char *expandedKey)
void	aes_transform (const unsigned char *expandedKey, unsigned char *data)
int	aes_transform_ctr (const unsigned char *expandedKey, unsigned char *counter, const unsigned char *srcBuffer, int srcOffset, unsigned char *destBuffer, int destOffset, int count)

Detailed Description

Encrypt and decrypt data with AES-256 in CTR mode using pure C.

Function Documentation

aes_key_expand()

void aes_key_expand	(	const unsigned char *	key,
		unsigned char *	expandedKey )

Expand an AES-256 32-byte key to a 240-byte set of round keys.

Parameters

key	The AES-256 (32-byte) key to expand.
expandedKey	The expanded key (240-bytes).

aes_transform()

void aes_transform	(	const unsigned char *	expandedKey,
		unsigned char *	data )

Transform a 16-byte block using AES-256.

Parameters

expandedKey	The expandedKey 240 bytes, see aes_key_expand()
data	The data to transform.

aes_transform_ctr()

int aes_transform_ctr	(	const unsigned char *	expandedKey,
		unsigned char *	counter,
		const unsigned char *	srcBuffer,
		int	srcOffset,
		unsigned char *	destBuffer,
		int	destOffset,
		int	count )

Transform the data using AES-256 CTR mode.

Parameters

expandedKey	The expanded AES-256 key (240 bytes), see aes_key_expand()
counter	The counter.
srcBuffer	The source array to transform.
srcOffset	The source offset.
destBuffer	The source array to transform.
destOffset	The destination offset
count	The number of bytes to transform

Returns

The number of bytes transformed.