brp_Desfire_ExecCommand()

brp_errcode brp_Desfire_ExecCommand	(	brp_protocol	protocol,
		unsigned	Cmd,
		brp_buf	Header,
		size_t	Header_len,
		brp_buf	Param,
		size_t	Param_len,
		brp_Desfire_ExecCommand_CryptoMode	CryptoMode,
		unsigned	ResponseLen,
		brp_buf *	Resp,
		size_t *	Resp_len,
		brp_mempool *	mempool
	)

Generic command to communicate to a DESFire card. Depending on the value of the CryptoMode parameter, data will be transmitted plain, MACed or encrypted.

The DESFire command frame has to be split into two parts, header and data. The data block will be encrypted whereas the header block is left unencrypted.

Example: in the Desfire ChangeKeySettings command, the header is empty. The encrypted key settings will be transferred in the data block.

Parameters

[in]	protocol	used to execute the command
[in]	Cmd	DESFire Command code
[in]	Header	Header of command. The header is always sent bufunencrypted. It must not be larger than 59 bytes.
[in]	Header_len
[in]	Param	Parameter data of command (will be encrypted or MACed according to the value of the CryptoMode variable).
[in]	Param_len
[in]	CryptoMode	Type of encryption.
[in]	ResponseLen	Expected length of response. For commands where the length of the response is not known by the host (i.e. Desfire.ReadData with Len = 0), this value has to be set to 0xFFFF.
[out]	Resp	Response of command.
[out]	Resp_len
[in]	mempool	is used to store response data. Maybe NULL to use an internal mempool, in this case the data is only available until another command uses the internal mempool