XTEA

Data Structures
struct	AVXTEA

Functions
AVXTEA *	av_xtea_alloc (void)
	Allocate an AVXTEA context.
void	av_xtea_init (struct AVXTEA *ctx, const uint8_t key[16])
	Initialize an AVXTEA context.
void	av_xtea_le_init (struct AVXTEA *ctx, const uint8_t key[16])
	Initialize an AVXTEA context.
void	av_xtea_crypt (struct AVXTEA *ctx, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
	Encrypt or decrypt a buffer using a previously initialized context, in big endian format.
void	av_xtea_le_crypt (struct AVXTEA *ctx, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
	Encrypt or decrypt a buffer using a previously initialized context, in little endian format.

Detailed Description

Function Documentation

av_xtea_alloc()

AVXTEA * av_xtea_alloc

(

void

)

Allocate an AVXTEA context.

av_xtea_init()

void av_xtea_init	(	struct AVXTEA *	ctx,
		const uint8_t	key[16]
	)

Initialize an AVXTEA context.

Parameters

ctx	an AVXTEA context
key	a key of 16 bytes used for encryption/decryption, interpreted as big endian 32 bit numbers

av_xtea_le_init()

void av_xtea_le_init	(	struct AVXTEA *	ctx,
		const uint8_t	key[16]
	)

Initialize an AVXTEA context.

Parameters

ctx	an AVXTEA context
key	a key of 16 bytes used for encryption/decryption, interpreted as little endian 32 bit numbers

av_xtea_crypt()

void av_xtea_crypt	(	struct AVXTEA *	ctx,
		uint8_t *	dst,
		const uint8_t *	src,
		int	count,
		uint8_t *	iv,
		int	decrypt
	)

Encrypt or decrypt a buffer using a previously initialized context, in big endian format.

Parameters

ctx	an AVXTEA context
dst	destination array, can be equal to src
src	source array, can be equal to dst
count	number of 8 byte blocks
iv	initialization vector for CBC mode, if NULL then ECB will be used
decrypt	0 for encryption, 1 for decryption

av_xtea_le_crypt()

void av_xtea_le_crypt	(	struct AVXTEA *	ctx,
		uint8_t *	dst,
		const uint8_t *	src,
		int	count,
		uint8_t *	iv,
		int	decrypt
	)

Encrypt or decrypt a buffer using a previously initialized context, in little endian format.

Parameters

ctx	an AVXTEA context
dst	destination array, can be equal to src
src	source array, can be equal to dst
count	number of 8 byte blocks
iv	initialization vector for CBC mode, if NULL then ECB will be used
decrypt	0 for encryption, 1 for decryption