This preview shows page 1. Sign up to view the full content.
Unformatted text preview: coding so that youre hiding content but not existence of message o Alice Bob o Alice is the sender, Bob is the recipient o Eve is in the middle (evesdropper)-Transposition: identities of the symbols in a message stay the same, but their positions change o Not good idea if you have a short message (example: andy dyan) o 4 x 3 x 2 x 1 x 4! = 24-Substitution Rail Fence Cipher Welcome to Lign 17 step 1: # rows = 2 w l o e o I n 7 e c m t l g 1 step 2: wloeoin7ecmtlg1 *this operation scrambled the letters but original ID is still there...
View Full Document
- Winter '08