Vatsyayana cipher

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The Vatsyayana cipher or Kama Sutra cipher is a classical substitution cipher described in the 45th chapter of the Indian erotic manual Kama Sutra authored by Mallanaga Vatsyayana who is believed to have lived in the fourth century AD.[1][2] The cipher involves randomly pairing letters, so that each plaintext letter gets substituted for its paired letter in the ciphertext, and vice versa.


  1. ^ Bauer, Friedrich L. (2002). Decrypted Secrets: Methods and Maxims of Cryptology (3rd ed.). Springer-Verlag. p. 45. ISBN 3-540-42674-4. 
  2. ^ Singh, Simon (1999). The Code Book. Anchor Books. p. 9. ISBN 0-385-49532-3. 

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