UCLA Olga Radko Endowed Math Circle

10/3/2010 -- Circle Jr: More Fun with Ciphers (Shannon Rogers, MS 3915A)

This week we explored more ways to encode and decode: using frequency analysis, the Pigpen cipher, the Rail fence cipher, the Cardan grille. We also looked at how some numbers, like bank account or credit card numbers, can also have additional information hidden within their digits.