Chapter 7 The Advanced Encryption Standard ( AES )
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چکیده
All of the cryptographic algorithms we have looked at so far have some problem. The earlier ciphers can be broken with ease on modern computation systems. The DES algorithm was broken in 1998 using a system that cost about $250,000. It was also far too slow in software as it was developed for mid-1970’s hardware and does not produce efficient software code. Triple DES on the other hand, has three times as many rounds as DES and is correspondingly slower. As well as this, the 64 bit block size of triple DES and DES is not very efficient and is questionable when it comes to security.
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تاریخ انتشار 2006