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To provide secure delivery of satellite data in IPTV systems, service providers charge subscribing fee by scrambling the program in conditional access system using control words. At the receiver end, smart card is used to decrypt the control words and transfer them back to set-top box to descramble the scrambled program. Therefore, secure communication between set-top box and smart card is closely...
Authentication is the most essential procedure to ensure that the service is properly used for wireless environments. Recently, Zhu and Ma proposed a novel authentication scheme with anonymity for wireless environments by basing on the hash functions and smart card, and mobile users only do symmetric encryption and decryption. And they claimed that their new scheme is security and provide user anonymity...
Because the standard symmetric cryptographic algorithm DES cannot implement the operations of encryption and decryption for any length over 8 bytes, this paper defines DES-based data cryptographic functions, which can keep the byte length of input and output messages identical. These cryptographic functions have been successfully applied in secure transmission for the APDU of the smart card. An Implementation...
Communication plays a very important and indeed a crucial part in our daily lives. Electronic mail, data transfer, and the development of the Internet have changed the way the world communicates. As the Internet grows in popularity and therefore also in size, more and more transmissions take place, mainly because the technology is more readily available and applications have become more user friendly,...
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