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Programming and cryptography

Programming and cryptography. Wilber R. Rivas Del Rio High School San Felipe Del Rio CISD Dr . Guofei Gu Director of SUCCESS laboratory Secure Communication and Computer Systems Department of Computer Science & Engineering. Road map. Faculty Mentor Research Area

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Programming and cryptography

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  1. Programming and cryptography Wilber R. Rivas Del Rio High School San Felipe Del Rio CISD Dr. GuofeiGu Director of SUCCESS laboratory Secure Communication and Computer Systems Department of Computer Science & Engineering

  2. Road map • Faculty Mentor • Research Area • Research Area and Classroom Project • Classroom Project: Program using TI-84 Graphing Calculator • Show how to program the quadratic formula as an example • Mathematical application: Cryptography (extra) • Acknowledgements

  3. Director • Guofei Gu • Assistant Professor • Department of Computer Science & Engineering • Director, SUCCESS LAB • 2010 NSF CAREER award • Ph.d. Georgia Tech

  4. Research Area • Internet malware detection, defense, and analysis • Intrusion detection, anomaly detections • Network security • Web and social networking security

  5. Secure Communication is important • Citicard Users Lost Around $2.7 Million from Security Breach • The losses incurred by the Citigroup during a recent attack by hackers cost around $2.7 million after Citicard numbers were stolen from the website of the company

  6. Relationship between research and project Research: Developing algorithms for secure communication Classroom project : Students will learn to develop algorithms to solve mathematical problems. They will learn to program mathematical formulas on the TI-84

  7. TEKS §111.34. Geometry • (b) Knowledge and skills. • (1) Geometric structure. The student understands the structure of, and relationships within, an axiomatic system. The student is expected to: • (A) develop an awareness of the structure of a mathematical system, connecting definitions, postulates, logical reasoning, and theorems; • (3) Geometric structure. The student applies logical reasoning to justify and prove mathematical statements. The student is expected to: • (A) determine the validity of a conditional statement, its converse, inverse, and contrapositive; • (C) use logical reasoning to prove statements are true and find counter examples to disprove statements that are false; • (D) use inductive reasoning to formulate a conjecture; and • (E) use deductive reasoning to prove a statement.

  8. Classroom project • Simple programming using a graphing calculator

  9. Programming • Students will work in groups of 2 • Formulas and mathematical problems will be provided • Students will write program on paper and then test on the calculator

  10. Computers can do five basic things: • Take input • Arithmetic • Repetition • Make decision based of input information • Give output

  11. Quadratic formula program

  12. Programming PRGM

  13. Programming cont.

  14. Programming cont.

  15. For example: Name of program is quad D E

  16. Do you know how to keep secrets?Computers don’t!!!!

  17. (extra) Cryptography • Cryptography comes from the Greek for “secret writing.” • Students will use matrices to encrypt and decrypt plain text messages • [space] = 0, A=1, B=2, C=3, D=4, E=5, F=6, G=7, H=8, I=9, J=10, K=11, L=12 ,M=13, N=14, O=15, P=16, Q=17, R=18, S=19, T=20, U=21, V=22, W=23, X=24,Y=25, Z=26 Matrix

  18. Cryptography

  19. Cryptography cont.

  20. Acknowledgements Dr. Guofei Gu and staff E3 program coordinators Master teachers: Stephen Hudson and Roberto Dimaliwat E3 participants James Milender for encouraging me to apply

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