1. Radix-64

(a) Converting this following message to Radix-64 codes (Note: pay attention to the uppercases and lowercases). (15 points) Note: you have to show the intermediate steps. Just showing the final codes receives 0 credit.

Security

(b) We can use Radix-64 code as encryption method (there is no key). Assuming the attacker does not know the Radix-64 algorithm, how effective would this algorithm be against cryptanalysis? (5 points)