“And having thus chosen our course, without guile, and with pure purpose, let us renew our trust in God, and go forward without fear, and with manly hearts.”
Abraham Lincoln — Address to congress (July 4th, 1861)

Kryptos is a sculpture by the American artist Jim Sanborn located on the grounds of the Central Intelligence Agency (CIA) in Langley, Virginia. Of the four parts of the message, the first three have been solved. The last part of the message remains as one of the most famous unsolved code in the world.
The ciphertext on the left-hand side of the sculpture (as seen from the courtyard) of the main sculpture contains 869 characters in total (865 letters and 4 question marks). The right-hand side of the sculpture comprises a keyed Vigenère encryption tableau, consisting of 867 letters. In our last post about KRYPTOS, we learned how to break a Vigenère code. In this post, we finish the job regarding the entire section II. Follow us on Twitter: @INTEL_TODAY Continue reading →