MifareClassicValueBlock Class

Ref: http://www.nxp.com/documents/data_sheet/MF1S50YYX.pdf Value blocks allow performing electronic purse functions (valid commands are: read, write, increment, decrement, restore, transfer). Value blocks have a fixed data format which permits error detection and correction and a backup management. Value: Signifies a signed 4-byte value. The LSB of a value is stored in the lowest address byte i.e 0x00000012 is stored as 0x12000000. Negative values are stored in standard 2's complement format. For reasons of data integrity and security, a value is stored three times, twice non-inverted and once inverted Adr: Signifies a 1-byte address, which can be used to save the storage address of a block, when implementing a powerful backup management. The address byte is stored four times, twice inverted and non-inverted. During increment, decrement, restore and transfer operations the address remains unchanged. It can only be altered via a write command.

Namespace: CardWerk.SmartCard.CardModule.MifareClassic
Assembly: CardWerk.SmartCard.CardModule.MifareClassic (in CardWerk.SmartCard.CardModule.MifareClassic.dll)

Public Class MifareClassicValueBlock

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public class MifareClassicValueBlock

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public ref class MifareClassicValueBlock 

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public class MifareClassicValueBlock

This language is not supported or no code example is available.

Methods

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	Name	Description
	Pack(int, long)	Packs value.
	UnPack(byte[], ref int, ref long)	Unpacks value.

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