Abstract:               

Today's connected society requires secure data encryption devices to preserve 
data privacy and authentication in critical applications. Of the several data 
encryption types Data Encryption Standard (DES) and its variant Triple DES have 
emerged to be the most commonly used in varying applications. DES and Triple DES 
enabled devices are widely used in secure data communications, networking, 
access control, smart cards, financial transactions, multimedia, video, audio 
and imaging applications where data transfer speed is as important as the 
quality of the design. In general hardware implementations are known to be 
faster than software applications. We have successfully implemented a VLSI (Very 
Large Scale Integrated Circuits) design which uses either DES or Triple DES, 
according to the security level the user needs (Triple DES considered to be more 
secure than DES, which applies three keys in succession) and supports ECB 
(Electronic Code Book) DES mode of operation. Both DES and Triple DES 
algorithms can be implemented in hierarchy which can be considered as an 
advantage in hardware design and increases reusability of  the design. This 
device designed to work on Triple DES with three keys and by the help of a 
controller unit also can be switched to work on DES with a single key. For 
Triple DES an option is built in to work with either a single, two or three 
different keys. The structural core of DES and the pipelining technique is used 
thus enabling a one clock cycle throughput for encrypting or alkdecrypting a 64 
bit block binary data both for DES and Triple DES. VHDL is used as the source 
language for the design, a structural and hierarchical methodology is followed 
throughout the design.


Bio:                    

Assistant Prof in Department of Electrical Engineering, Hacettepe University, 
Ankara  Turkey since 1997.

PhD in Electrical Engineering 1991-1995	University of Colorado at Boulder, USA
MSc in Electrical Engineering 1989-1991	University of Colorado at Boulder, USA
BS in Electrical Engineering   1988-1989	Hacettepe Üniversity Turkey

Established a VLSI Design and Network Security Laboratory in the department 
since than. 
Currently working on Dynamic Circuits, Asynchronous Design, Cryptology, Computer 
Architecture and Microelectronics.
Member of IEEE since 1994 and member of EMO (Electrical Engineering Society of 
Turkey)

Schedule Restrictions:  None