资料内容：
The interest in smart cards is a result of the benefits they provide.One benefit, ofcourse,is their built-in computational power.Securiry, portabilirty, and ease of useare the other key advantages of smart cards.
The processor,memory, and l/O support of a smart card are packaged in a sin-gle integrated circuit embedded in a plastic card.A smart card is resistant to attackbecause it does not need to depend on potentially vulnerable external resources.Probing information in a smart card requires the physical possession of the card,
