Crypto

Functions
static	LLIST_HEAD (gprs_ciphers)
int	gprs_cipher_register (struct gprs_cipher_impl *ciph)
int	gprs_cipher_load (const char *path)
int	gprs_cipher_run (uint8_t *out, uint16_t len, enum gprs_ciph_algo algo, uint8_t *kc, uint32_t iv, enum gprs_cipher_direction dir)
unsigned	gprs_cipher_key_length (enum gprs_ciph_algo algo)
	Obtain key lenght for given GPRS cipher. More...
int	gprs_cipher_supported (enum gprs_ciph_algo algo)
uint32_t	gprs_cipher_gen_input_ui (uint32_t iov_ui, uint8_t sapi, uint32_t lfn, uint32_t oc)
uint32_t	gprs_cipher_gen_input_i (uint32_t iov_i, uint32_t lfn, uint32_t oc)
static	__attribute__ ((constructor))

Variables
static struct gprs_cipher_impl *	selected_ciphers [_GPRS_ALGO_NUM]
const struct value_string	gprs_cipher_names []
static struct gprs_cipher_impl	gea3_impl
static struct gprs_cipher_impl	gea4_impl

Detailed Description

Function Documentation

__attribute__()

static __attribute__ ( (constructor)  )

static

References gea3_impl, gea4_impl, and gprs_cipher_register().

gprs_cipher_gen_input_i()

uint32_t gprs_cipher_gen_input_i	(	uint32_t	iov_i,
		uint32_t	lfn,
		uint32_t	oc
	)

gprs_cipher_gen_input_ui()

uint32_t gprs_cipher_gen_input_ui	(	uint32_t	iov_ui,
		uint8_t	sapi,
		uint32_t	lfn,
		uint32_t	oc
	)

gprs_cipher_key_length()

unsigned gprs_cipher_key_length

(

enum gprs_ciph_algo

algo

)

Obtain key lenght for given GPRS cipher.

Parameters

[in]

algo

Enum representive GPRS cipher

Returns

unsigned integer key length for supported algorithms, for GEA0 and unknown ciphers will return 0

References GPRS_ALGO_GEA0, GPRS_ALGO_GEA1, GPRS_ALGO_GEA2, GPRS_ALGO_GEA3, and GPRS_ALGO_GEA4.

Referenced by gea3().

gprs_cipher_load()

int gprs_cipher_load

(

const char *

path

)

References osmo_plugin_load_all().

gprs_cipher_register()

int gprs_cipher_register

(

struct gprs_cipher_impl *

ciph

)

References gprs_cipher_impl::algo, ARRAY_SIZE, gprs_cipher_impl::list, llist_add_tail(), gprs_cipher_impl::priority, and selected_ciphers.

Referenced by __attribute__().

gprs_cipher_run()

int gprs_cipher_run	(	uint8_t *	out,
		uint16_t	len,
		enum gprs_ciph_algo	algo,
		uint8_t *	kc,
		uint32_t	iv,
		enum gprs_cipher_direction	dir
	)

References ARRAY_SIZE, GSM0464_CIPH_MAX_BLOCK, len, gprs_cipher_impl::run, and selected_ciphers.

gprs_cipher_supported()

int gprs_cipher_supported

(

enum gprs_ciph_algo

algo

)

References ARRAY_SIZE, and selected_ciphers.

LLIST_HEAD()

static LLIST_HEAD ( gprs_ciphers  )

static

Variable Documentation

gea3_impl

struct gprs_cipher_impl gea3_impl

static

Initial value:

= {
        .algo = GPRS_ALGO_GEA3,
        .name = "GEA3 (libosmogsm built-in)",
        .priority = 100,
        .run = &gea3,
}

Referenced by __attribute__().

gea4_impl

struct gprs_cipher_impl gea4_impl

static

Initial value:

= {
        .algo = GPRS_ALGO_GEA4,
        .name = "GEA4 (libosmogsm built-in)",
        .priority = 100,
        .run = &gea4,
}

Referenced by __attribute__().

gprs_cipher_names

const struct value_string gprs_cipher_names[]

Initial value:

= {
        { GPRS_ALGO_GEA0, "GEA0" },
        { GPRS_ALGO_GEA1, "GEA1" },
        { GPRS_ALGO_GEA2, "GEA2" },
        { GPRS_ALGO_GEA3, "GEA3" },
        { GPRS_ALGO_GEA4, "GEA4" },
        { 0, NULL },
}

selected_ciphers

struct gprs_cipher_impl* selected_ciphers[_GPRS_ALGO_NUM]

static

Referenced by gprs_cipher_register(), gprs_cipher_run(), and gprs_cipher_supported().