### Lecture Notes on Cryptography - Computer Science

This is a set of lecture notes on cryptography compiled for 6.87s, a one week long course on cryptography taught at MIT by Shaﬂ Goldwasser and Mihir Bellare in the summers of 1996{2002, 2004, 2005 and 2008. Cryptography is of course a vast subject. The thread followed by these notes is to develop and explain the