el-bolok, Hatem, <br/><br/>
Application of cryptosystem :  Data encryption standard (DES) / 
Hatem El-Bolok, Ihab Abd el-wahab. 
 - Cairo :  6 October University,  2002. 
 - [100] p. :  ill. ;  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer security.<br/>Data encryption (computer science)<br/>Computers --Access Control<br/>Cryptography.
<br/><br/><label>Dewey Class. No.: </label>005.82  / EA