RFID card reader for encryption algorithm
With the development of electronic information technology, contactless smart cards (such as RFID card reader) has been in our lives everywhere. With the traditional contact smart card reader, magnetic cards, compared the use of radio frequency identification technology developed by non-contact smart cards, with a high degree of confidentiality and easy to use security features, is gradually replacing the traditional contact-type IC card, the new trend for smart card field. However, the RFID system is an open wireless data exchange state, outside the system easily interfere with the implementation of a variety of information and information theft.
In view of the RFID system security, data exchange and open questions, it is a lot of research work, made a lot of security design recommendations. Physical implementation in hardware terms, as proposed: Kill label, Faraday electrical enclosures and other methods; realization in the software system, a series of security protocols, such as: Hash lock, lock random Hash, Hash chain, and improved random Hash lock method, and these methods are the manufacture of chips for RFID tags designed for use have been dropped into a large-scale smart card is concerned, do not have the practical. Currently in the smart card application system, the more popular use of compatible ISO / IEC 14443 protocol Mifare 1 series smart card, which itself has three mutual authentication security protocols, but the security of the loopholes, it is necessary that security, based on the the introduction of a data encryption algorithm to further protect the security of data communications. TEA algorithm as a tiny encryption algorithm, has a simple, fast, safe and good performance characteristics in the field of electronic product development has been widely applied, such as PDA data encryption, encryption, embedded itself in the field of communication style, and the widespread use of TEA algorithm resulted in the attack against the algorithm, it is necessary to improve on the TEA algorithm.
-The news from szchinacard.com.
