Monday, November 25, 2013

Code 67 : Templar Cipher


Background

The Knights Templar were founded in the year 1118. Due to their power and influence in medieval times the need arose to encode messages concerning the transportation of money and relics. Thus, the Knights Templar created several different ciphers.

 

Principle

All versions of the Templar cipher are quite simple. Each plaintext-character is associated with a symbol. Keys are not used.
Using a variant of the Templar cipher, the alphabet A-Z is encoded like this:
templer-chiffre
Fig. 1: Templar cipher  (A-Z)1
and J are identical because the Templar cipher was originally only intended for 25 characters.

 

Security

Templar-ciphers can be cracked very fast with a frequency-analysis.

 

Details

As each plaintext-character is mapped to an invariable other character, the Templar cipher belongs to the class of monoalphabetic substitutions.

 

Weblinks

 

References

Br├Ątz, Marcel: "Kryptographiespielplatz", http://www.kryptographiespielplatz.de/, 2009-02-11.

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