brp_Crypto_DecryptBlock()

brp_errcode brp_Crypto_DecryptBlock	(	brp_protocol	protocol,
		unsigned	KeyIndex,
		brp_buf	KeyValue,
		brp_buf	Block,
		brp_buf *	UnencryptedBlock,
		brp_mempool *	mempool
	)

This command decrypts an 8-Byte data block given in the Block parameter using the SkipJack algorithm.

If KeyIndex is set to 0x00, KeyValue will be used as encryption key. Otherwise, KeyIndex is interpreted as the index of the corresponding entry in the internal key list. KeyIndex = 0x01 denotes configuration value 0x81, KeyIndex = 0x02 denotes configuration value 0x82, etc.

Parameters

[in]	protocol	used to execute the command
[in]	KeyIndex	Index of key to use to decrypt data. KeyIndex must be set to 0x00 if a user- defined key, specified in the KeyValue parameter, should be used for decryption.
[in]	KeyValue	If KeyIndex is set to 0x00, this value specifies a user-defined decryption key.
[in]	Block	Data block to decrypt.
[out]	UnencryptedBlock	Unencrypted data block after decryption.
[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