Ganzúa: A cryptanalysis tool for monoalphabetic and polyalphabetic ciphers

ABSTRACT

Many introductory courses to cryptology and computer security start with or include a discussion of classical ciphers that usually contemplates some cryptanalysis techniques used to break them. Ganzúa (picklock in Spanish) is an application designed to assist the cryptanalysis of ciphertext obtained with monoalphabetic or polyalphabetic ciphers. It can use almost arbitrary character sets for the plain and cipher alphabets as well as obtain the standard relative frequencies of many languages and provide other useful data.

REFERENCES

• 1: Bauer, F. L. 2000, Decrypted Secrets, Methods and Maxims of Cryptology, 2nd. ed., Springer Verlag, New York.
• 2: Bobbit, M. Mike's cryptanalysis tool, http://cipherlogic.army.ca/cgi-bin/cryptanalysis.pl
• 3: Cummings, J. Topics in applied mathematics: cryptography, Mathematics Department, Carnegie Mellon University, http://www.math.cmu.edu/users/jcumming/teaching/crypto/
• 4: Galaviz, J. and Magidin, A. 2003. Introducción a la criptología, (course notes in spanish), Departamento de Matematicas, Facultad de Ciencias, Universidad Nacional Autónoma de México, available at: http://pateame.fciencias.unam.mx/cripto/index.html
• 5: García-Pasquel, A. 2004. Gauzúa: A cryptanalysis tool for classical ciphers, http://ganzua.sourceforge.net/en/index.html
• 6: Kahn, D. 1999. The Codebreakers, 2nd. ed., Scribner.
• 7: Kerckhoffs, A. 1883, La cryptographie militaire, Journal des Sciences Militaires IX, 5 (Jan.), 161 (Feb.) available in Fabien Petitcolas: http://www.petitcolas.net/fabien/kerckhoffs/index.html
• 8: Peschel, J. Key recovery utilities and resources, http://users.castel.nl/~groor01/crack.htm
• 9: Quer-I, J. 1996. Criptografía, Departamento de Computación, Universidad de Buenos Aires, Argentina, course web page: http://www.dc.uba.ar/eci/96/n1.html
• 10: Ramió, J. 2003. Seguridad informática, Universidad Politécnica de Madrid, Spain, course web page: http://www.lpsi.eui.upm.es/SInformatica/SInformatica.htm
• 11: Russell, M. CRANK: CRyptANalysis toolKit, http://crank.sourceforge.net/about.html
• 12: Sinkov, A. 1990. Elementary Cryptoanalysis: a Mathematical Approach, 6th ed., MAA, New Mathematics Library (No. 22).
• 13: Spillman, R. 2002. CAP: A software tool for teaching classical cryptology, Colloquium for Information Systems Security Education (CISSE 2002). Paper available at: http://cisse.info/CISSE%20J/2002/spill.pdf further info about the application: http://www.cs.plu.edu/pub/faculty/spillman/CAP/index.htm
• 14: Sun Microsystems. 2005, Core Java internationalization, http://java.sun.com/j2se/corejava/intl/index.jsp
• 15: Weibel, C. 2002, Math 395: (An introduction to cryptography), Mathematics Department, Rutgers University, http://www.math.rutgers.edu/courses/395/s02/395syllabus.html
• 16: W3C (World Wide Web Consortium), 2004. XML Schema: Specifications and development, http://www.w3.org/XML/Schema#dev

INDEX TERMS

Primary Classification:
  E. Data
  E.3 DATA ENCRYPTION

Additional Classification:
  K. Computing Milieux
  K.3 COMPUTERS AND EDUCATION
      K.3.1 Computer Uses in Education
          Subjects: Computer-assisted instruction (CAI)
      K.3.2 Computer and Information Science Education
          Subjects: Computer science education
  K.8 PERSONAL COMPUTING
      K.8.1 Application Packages
          Subjects: Freeware/shareware

General Terms:
Security

Keywords:
Cryptology, classical cryptography