CRYPTOLOGY BY Chris and Chris Concepts Definitions cryptology

CRYPTOLOGY BY: Chris and Chris

Concepts & Definitions cryptology- Is the art , or would be science, of designing and braking down secrecy systems Classical Cryptology -using codes and ciphers Codes-a fixed predetermined dictionary that assigns code words to most likely message. Ciphers-is a universal scheme employing a set of transformations capable of turning any plaintext into cipher text Symmetric Computer-Based Cryptology -a language where the sender and receiver has the same key. Public Key Cryptology -entrusts math itself with keys to a cryptosystem.

Concepts and Definitions cont. Plain text- The text that you enter Cipher text- the ciphered text that will be returned

Example Caesar Cipher-this is a shift cipher where the alphabet is shifted to provide a rule for substitution. Lnanvfgurorfg means Yana is the best

Progress Since the last presentation Chris^2 have started to work on our programming example.

References 1. Invitation to Cryptology By: Thomas H. Barr http: //delivery. acm. org/10. 1145/1280000/1272736/p 20 raliszewski. pdf? key 1=1272736&key 2=8308353021&coll=ACM&dl=ACM&CFID=5585 5076&CFTOKEN=39898128 2. Cryptology in transition By: Abraham Lempel http: //delivery. acm. org/10. 1145/360000/356792/p 285 lempel. pdf? key 1=356792&key 2=3428353021&coll=ACM&dl=ACM&CFID=5 5855076&CFTOKEN=39898128