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Zodiac Killer Cipher Generator
- 2. Key Attributes • Capable of generating homophonic substitution ciphers similar to those created by the Zodiac Killer • User provides • Message to be enciphered • Various configuration settings • Cipher Generator creates • Cipher • Plaintext (cipher solution)
- 3. Intended Usage • The Zodiac Killer Cipher Generator is a tool for easily creating ciphers with known cryptographic characteristics • These known ciphers can be used to test the capability and performance of cryptanalysis software • Additionally, the Generator can create ciphers similar to unknown ciphers in order to gain insight into the unknown cipher • For example, numerous generated ciphers which are similar to the apparent strength of the Zodiac Killer’s 340 cipher have been solved by various cipher-solving programs. This suggests there is some additional complexity involved with the 340.
- 4. Accessing the Cipher Generator • The online Cipher Generator is a featured resource at Zodiac Revisited, a website dedicated to analyzing and discussing the case of the Zodiac Killer • http://zodiacrevisited.com/zodiac-killer-cipher-generator/
- 5. Example Message Entry • Cut and paste desired message into text box • Text must be long enough to provide enough content for a cipher of the requested length
- 6. Configuration Inputs • Plaintext Case. Should the generated solution be all uppercase or all lowercase? • Output Type. Generate the cipher using numbers or ASCII characters • Preset Configuration. There are entries for the Zodiac Killer’s 340 & 408 cipher as well as a custom entry • Cipher Length. The number of characters to use for the cipher
- 7. Configuration Inputs (cont) • Number of Symbols. The number of symbols the generated cipher should have. This value must be enough to cover the letters in the cipher content. • Columns. Display the cipher using this number of columns • Seed. Seed the randomness application using a string. Using a different string will result in a different set of generated symbols. • Fill to End of Row. Randomly choose symbols to fill in the last row (i.e. any content past the cipher length)
- 9. The Same Cipher as ASCII • Each symbol is represented by a printable ASCII character • Much more compact representation • Cipher Generator can generate up to 91 printable ASCII symbols. If you need more symbols, you must use numerical.
- 10. Example Plaintext Output • Input message with all non- letter characters removed • Can be generated in all uppercase or all lowercase, based on user input
- 11. More Information • For a short video showing how to use the Zodiac Killer Cipher Generator see: • http://zodiacrevisited.com/zodiac-killer-cipher- generator-video/ • For specific questions, contact Mike through: • http://zodiacrevisited.com/contact/
- 12. Thank You! Stay in Touch • http://zodiacrevisited.com • https://www.facebook.com/ZodiacRevisited • https://twitter.com/ZodiacRevisited (@ZodiacRevisited)