Daily Archives: October 23, 2008

Daily Question – 131

130 : Munshi Premchand, on whose works Oka Oori Katha and Shatranj Ke Khilari are based.

One of the earliest descriptions of encryption by substitution appears in a text written in the 4th century AD (itself based on manuscripts dating back to the 4th century BC.) The text recommends that women should be well versed in various arts including conjuring, chess, bookbinding and carpentry. Among the arts  is mlecchita-vikalpa, the art of secret writing. One of the recommended techniques involves randomly pairing letters of the alphabet, and then substituting each letter in the original message with its partner. This cipher is known by the name of the book or by that of the author. What cipher is this?