Kris Gaj Office hours: Monday, 3:00-4:00 PM, Wednesday, 3:00-4:00 PM, 7:30-8:30 PM and by appointment Research and teaching interests: cryptography computer arithmetic FPGA design and verification Contact: Engineering Bldg., room 3225 (703)

ECE 645 Part of: MS in Electrical Engineering MS in Computer Engineering Digital Systems Design Digital Signal Processing Fundamental course for the specialization areas: Elective Elective course in the remaining specialization areas PhD in ECE, Computer Science, and IT Elective

DIGITAL SYSTEMS DESIGN Concentration advisors: Kris Gaj, Ken Hintz, Houman Homayoun 1.ECE 545 Digital System Design with VHDL – K. Gaj, project, FPGA design with VHDL, 2. ECE 645 Computer Arithmetic – K. Gaj, project, FPGA design with VHDL or Verilog, software, or analytical 3. ECE 681 VLSI Design for ASICs – H. Homayoun, project/lab, front-end and back-end ASIC design with Synopsys tools 4. ECE 586 Digital Integrated Circuits – D. Ioannou, R. Mulpuri, 5a. ECE 682 VLSI Test Concepts – T. Storey 5b. ECE 699 Digital Signals Processing Hardware Architectures – A. Cohen, project, FPGA design with VHDL and Matlab/Simulink

DIGITAL SIGNAL PROCESSING Concentration advisors: Aaron Cohen, Kris Gaj, Ken Hintz, Jill Nelson, Kathleen Wage 1.ECE 535 Digital Signal Processing – L. Griffiths, J. Nelson, Matlab 2.ECE 545 Digital System Design with VHDL – K. Gaj, project, FPGA design with VHDL 3.ECE 645 Computer Arithmetic – K. Gaj, project, FPGA design with VHDL 4.ECE 699 Digital Signals Processing Hardware Architectures – A. Cohen, project, FPGA design with VHDL and Matlab/Simulink 5a. ECE 537 Introduction to Digital Image Processing – K. Hintz 5b. ECE 738 Advanced Digital Signal Processing – K. Wage

A few words about You 5 MS CpE students 5 MS EE students 2 PhD ECE students

A few words about You 8 students who took ECE students who did not take ECE 545 ECE 545 not enforced as a prerequisite

Useful Knowledge (which can be used as a background for a project) RTL design with VHDL or Verilog FPGA Devices and Tools High level programming language (e.g., C, Java, Matlab) Basics of digital design and computer organization

Course web page ECE web page  Courses  ECE 645

Computer Arithmetic LectureProject 35% Homework 15 % Midterm exam (in class) 20 % Final Exam (in class) 30 %

Bonus Points for Class Activity Based on class exercises during lecture “Small” points earned each week posted on BlackBoard Up to 5 “big” bonus points Scaled based on the performance of the best student For example: 1. Alice Bob … … … 12. Charlie 8 1 Small pointsBig points

Digital circuit design course covering addition and subtraction multiplication division and modular reduction exponentiation Efficient Integers unsigned and signed Real numbers fixed point single and double precision floating point Elements of the Galois field GF(2 n ) polynomial base

1.Applications of computer arithmetic algorithms. INTRODUCTION Lecture topics

1.Basic addition, subtraction, and counting 2.Addition in Xilinx and Altera FPGAs 3. Carry-lookahead, carry-select, and hybrid adders 4. Adders based on Parallel Prefix Networks 5.Pipelined Adders 6.Modular Adders/Subtractors ADDITION AND SUBTRACTION

MULTIOPERAND ADDITION 1.Sequential multi-operand adders 2.Carry Save Adders 3.Wallace and Dadda Trees

Unsigned Integers Signed Integers Fixed-point real numbers Floating-point real numbers Elements of the Galois Field GF(2 n ) NUMBER REPRESENTATIONS

MULTIPLICATION 1.Tree and array multipliers 2.Unsigned vs. signed multipliers 3.Optimizations for squaring 4. Sequential multipliers - radix-2 multiplier - multipliers based on carry-save adders - radix-4 & radix-8 multipliers - Booth multipliers - serial multipliers

TECHNOLOGY 1.Embedded resources of Xilinx and Altera FPGAs - block memories - multipliers - DSP units 2. Multiplication in Xilinx and Altera FPGAs - using distributed logic - using embedded multipliers - using DSP blocks 3. Pipelined multipliers

DIVISION 1.Basic restoring and non-restoring sequential dividers 2.Array dividers 3.Dividers by Convergence 4.SRT and high-radix dividers

LONG INTEGER ARITHMETIC (PROJECTS) 1.Modular Multiplication 2.Modular Exponentiation 3.Montgomery Multipliers and Exponentiation Units

FLOATING POINT AND GALOIS FIELD ARITHMETIC (PROJECTS) 1.Floating-point units Binary formats Decimal formats 2. Galois Field GF(2 n ) units

Literature (1) Required textbook: Behrooz Parhami, Computer Arithmetic: Algorithms and Hardware Design, 2 nd edition, Oxford University Press, 2010.

Literature (2) Jean-Pierre Deschamps, Gery Jean Antoine Bioul, Gustavo D. Sutter, Synthesis of Arithmetic Circuits: FPGA, ASIC and Embedded Systems, Wiley-Interscience, Joseph Cavanagh, Computer Arithmetic and Verilog HDL Fundamentals, CRC Press, Milos D. Ercegovac and Tomas Lang Digital Arithmetic, Morgan Kaufmann Publishers, Supplemantory books:

Literature (3) 1.Pong P. Chu, RTL Hardware Design Using VHDL: Coding for Efficiency, Portability, and Scalability, Wiley-IEEE Press, 2006 (ECE 545 textbook) 2.Hubert Kaeslin, Digital Integrated Circuit Design: From VLSI Architectures to CMOS Fabrication, Cambridge University Press; 1st Edition, (ECE 681 textbook) 3. Stephen Brown and Zvonko Vranesic, Fundamentals of Digital Logic with VHDL Design, 3rd Edition, McGraw-Hill, (ECE 331 textbook) Digital System Design textbooks:

Literature (4) Supplementary books: 1.E. E. Swartzlander, Jr., Computer Arithmetic, vols. I and II, IEEE Computer Society Press, Alfred J. Menezes, Paul C. van Oorschot, and Scott A. Vanstone, Handbook of Applied Cryptology, Chapter 14, Efficient Implementation, CRC Press, Inc., 1998.

Literature (3) Proceedings of conferences ARITH - International Symposium on Computer Arithmetic ASIL - Asilomar Conference on Signals, Systems, and Computers ICCD - International Conference on Computer Design CHES - Workshop on Cryptographic Hardware and Embedded Systems Journals and periodicals IEEE Transactions on Computers, in particular special issues on computer arithmetic. IEEE Transactions on Circuits and Systems IEEE Transactions on Very Large Scale Integration IEE Proceedings: Computer and Digital Techniques Journal of Signal Processing Systems

Homework reading assignments analysis of computer arithmetic algorithms and implementations design of small arithmetic units

Getting Help Outside of Office Hours System for asking questions 24/7 Answers can be given by students and instructors Student answers endorsed (or corrected) by instructors Average response time in ECE 545 = 2.1 hour You can submit your questions anonymously You can ask private questions visible only to the instructors

Exams Midterm Exam - 2 hrs 30 minutes, in class multiple choice + short problems Final Exam – 2 hrs 45 minutes comprehensive conceptual questions analysis and design of arithmetic units Practice exams on the web Midterm Exam - March 26 Final Exam - Wednesday, May 7, 4:30-7:15 PM Tentative days of exams:

Project Can be done individually or in groups of two students Suggested project topics posted early in the semester You can propose your own project topic Regular meetings with the instructor Presentations at the end of the semester Contest for the best project

ECE 645 Project Hardware Analytical Software

Hardware Projects Real-life circuit requiring the use of arithmetic operations FPGA implementation using embedded resources, such as DSP units and Block Memories Options of FPGA tools, initial placement point, and optimum target clock frequency selected using ATHENa Possible experimental testing using PLDA boards with PCI Express interface based on Virtex 6, Virtex 7, and Stratix V FPGAs (optional)

Software Projects Real-life application requiring the use of arithmetic operations Software implementation in a high-level programming language of your choice Possible use of arithmetic libraries, such as GMP, MIRACL, RELIC, NTL Optimization of software tool options

Analytical Projects Review of literature concerning algorithms and hardware architectures for a specific class of arithmetic operations Qualitative comparison of competing designs Quantitative comparison based on published results

Mixed Projects HW 80% AN 20% HW 40% SW 40% AN 20% AN 60% SW 40%

Primary applications (1) Execution units of general purpose microprocessors Integer units Floating point units Integers (8, 16, 32, 64, 128 bits) Real numbers (32, 64, 128 bits)

Primary applications (2) Digital signal and digital image processing Real or complex numbers (fixed-point or floating point) e.g., digital filters Discrete Fourier Transform Discrete Hilbert Transform Edge detection General purpose DSP processors Specialized circuits

Primary applications (3) Coding Elements of the Galois fields GF(2 n ) (4-64 bits) Error detection codes Error correcting codes

Secret-key (Symmetric) Cryptosystems key of Alice and Bob - K AB Alice Bob Network Encryption Decryption

Hash Function arbitrary length message hash function hash valueh(m) h m fixed length It is computationally infeasible to find such m and m’ that h(m)=h(m’)

Primary applications (4) Cryptography Integers (16, 32, 64 bits) IDEA, RC6, Mars, SHA-3 candidates: SIMD, Shabal, Skein, BLAKE Twofish, Rijndael, SHA-3 candidates Elements of the Galois field GF(2 n ) (4, 8 bits)

RC6 MARS Twofish MUL32, 2 x ROL32, S-box 9x32 Main operations Auxiliary operations XOR, ADD/SUB32 2 x SQR32, 2 x ROL32 XOR, ADD/SUB32 96 S-box 4x4, 24 MUL GF(2 8 ) XOR ADD32 Rijndael Serpent 8 x 32 S-box 4x4 XOR 16 S-box 8x8 24 MUL GF(2 8 ) XOR

42 Basic Operations of 14 SHA-3 Candidates 42 NTT – Number Theoretic Transform, GF MUL – Galois Field multiplication, MUL – integer multiplication, mADDn – multioperand addition with n operands

Public Key (Asymmetric) Cryptosystems Public key of Bob - K B Private key of Bob - k B Alice Bob Network Encryption Decryption

RSA as a trap-door one-way function M C = f(M) = M e mod N C M = f -1 (C) = C d mod N PUBLIC KEY PRIVATE KEY N = P  Q P, Q - large prime numbers e  d  1 mod ((P-1)(Q-1))

RSA keys PUBLIC KEY PRIVATE KEY { e, N } { d, P, Q } N = P  Q e  d  1 mod ((P-1)(Q-1)) P, Q - large prime numbers

Primary applications (5) Cryptography Long integers (1k-16k bits) Public key cryptography RSA, DSA, Diffie-Hellman Elliptic Curve Cryptosystems, Pairing Based Cryptosystems Elements of the Galois field GF(2 n ) ( bits)

Primary applications (5) Cipher Breaking Public key cryptography RSA PUBLIC KEY RSA PRIVATE KEY { e, N } { d, P, Q } N = P  Q P, Q e  d  1 mod ((P-1)(Q-1))