CRYTOGRAPHY

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CRYTOGRAPHY

• PIGPEN CIPHER

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Contents

• Introduction
• History
• Advantages
• Disadvantages
• Explanation (how it works)
• Illustrated examples
• TEST!
• Cracking the code (how to break it)

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Introduction

• Simple substitution cipher for symbols based on a
  grid.
• Encryption system developed by the Freemasons.

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History

• Developed in 18th century AD.
• Used by the Freemasons for keeping record-keeping
  and correspondence private

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History

• 1860s American Civil War
• Became popular for encrypting messages

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History

• Origins of PIGPEN
• Monoalphabetic
• Key can be changed

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Advantages

• Variability
• Easy for encrypting party
• Easy for receiving party

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Disadvantages

• Monoalphabetic
• Not sophisticated enough
• Easily cracked
• Frequency analysis

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Explanation (how it works)
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ILLUSTRATIONS
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TEST
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(No Transcript)
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Decrypt This
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ANSWER
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Encrypt This

• Mathematics of passwords rule

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Answer!
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Cracking the Code

• Frequency Analysis ? Al-Kindi
• E

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Thank You

• Done by Gabriel, Darren, Yi Fan