Administrative Course overview (informal) Lectures: Mondays 9:30-10:50, ELH 110 Office Hours: Tu: 10-11am Fr: 10-11am Lecture Material: 09/24 [compressed postscript]   09/26 [PDF]   Vigenere [compressed postscript] 10/01 [PDF]   10/03 [PDF]   10/08 [PDF]   10/10 [PDF]   10/15 [PDF]   Homework 1 [PDF] 10/17 [PDF]   10/22 [PDF]   10/24 [PDF]   10/29 [PDF]   10/31 [PDF]   11/05 [PDF]   11/07 [PDF]   11/12 NO CLASS: University Holiday!!!   11/14 [PDF]   Homework 2 [PDF] 11/19 [PDF]   11/21 [PDF]   Handouts: Caesar's cipher example   Vigenere cipher and relatives   Breaking Vigenere Number Theory Fact-sheet (from Stanford)   Block/Stream Cipher Overview (from MIT) Related Links Some neat interactive ciphers Ron Rivest's security links Crypto on-line courses Home Pages of Some Cryptographers Sirene Collection