FIDO2 CTAP utils

FIDO2 CTAP utility helper. More...

Detailed Description

FIDO2 CTAP utility helper.

Files
file	ctap_utils.h
	Definition for CTAP utility functions.

Functions
void	fido2_ctap_utils_led_animation (void)
	LED animation to indicate that user action is required.
int	fido2_ctap_utils_init_gpio_pin (gpio_t pin, gpio_mode_t mode, gpio_flank_t flank)
	Initialize button to be used for user presence test.
int	fido2_ctap_utils_user_presence_test (void)
	Test user presence.
static int	fido2_ctap_utils_cred_cmp (const void *k1, const void *k2)
	Compare fido2 credentials based on id to find more recent one.
static bool	fido2_ctap_utils_ks_equal (const ctap_resident_key_t *k1, const ctap_resident_key_t *k2)
	Check equality of resident keys based on rp_id_hash and user_id.

Function Documentation

fido2_ctap_utils_cred_cmp()

static int fido2_ctap_utils_cred_cmp ( const void *  k1, const void *  k2  )

inlinestatic

Compare fido2 credentials based on id to find more recent one.

The more recent credential has a higher id. Therefore we sort in descending order.

Parameters

[in]	k1	first resident key
[in]	k2	second resident key

Returns

<0 if k1 > k2

>0 if k1 < k2

Definition at line 66 of file ctap_utils.h.

fido2_ctap_utils_init_gpio_pin()

int fido2_ctap_utils_init_gpio_pin	(	gpio_t	pin,
		gpio_mode_t	mode,
		gpio_flank_t	flank
	)

Initialize button to be used for user presence test.

Returns

ctap_status_codes_t

fido2_ctap_utils_ks_equal()

static bool fido2_ctap_utils_ks_equal ( const ctap_resident_key_t *  k1, const ctap_resident_key_t *  k2  )

inlinestatic

Check equality of resident keys based on rp_id_hash and user_id.

Parameters

[in]	k1	first resident key
[in]	k2	second resident key

Returns

true if equal false otherwise

Definition at line 83 of file ctap_utils.h.

fido2_ctap_utils_user_presence_test()

int fido2_ctap_utils_user_presence_test

(

void

)

Test user presence.

Successful if user clicks button in less than CTAP_UP_TIMEOUT

Returns

ctap_status_codes_t