brp_Desfire_ProxCheck()

brp_errcode brp_Desfire_ProxCheck	(	brp_protocol	protocol,
		unsigned	M,
		bool	UseExtProxKey,
		bool	DiversifyProxKey,
		bool	UseProxKey,
		unsigned	ProxKeyIdx,
		brp_buf	DivData,
		size_t	DivData_len,
		brp_buf	ProxKey,
		size_t	ProxKey_len
	)

This command executes a proximity check of the card.

Parameters

[in]	protocol	used to execute the command
[in]	M	Number of random bytes which are send within one procimity check round.
[in]	UseExtProxKey	Use (external) Proximity key given as command parameter. If the card is already authenticated (Card Authentication), do not activate this option.
[in]	DiversifyProxKey	Key diversification of the proximity key defined in Crypto Memory or SAM will be done according to NXP AN10922.
[in]	UseProxKey	Proximity key is defined in Crypto Memory or SAM. If the card is already authenticated (VC Selection or Card Authentication), do not activate this option.
[in]	ProxKeyIdx	Crypto Memory Index (SAM or CryptoMemory) of proximity check key * SAM: MSByte: Key version / LSByte: KeyIdx * Crypto Memory: MSByte: Page (0..15) / LSByte: KeyIdx (0x80-0xBF)
[in]	DivData	Key diversification according to NXP AN10922.
[in]	DivData_len
[in]	ProxKey	Proximity check key
[in]	ProxKey_len