Cryptography Reference
In-Depth Information
(a) Suggest a technique for producing keys for these cryptosystems that makes
the resulting keys easier to remember.
(b) To what extent does use of such a technique make these cryptosystems
easier to break?
16
. A historical cryptosystem that we have not discussed is the
Affine Cipher
.
(a) Find out how to encrypt and decrypt using an Affine Cipher.
(b) What is the size of the keyspace of an Affine Cipher?
(c) Explain how to attack an Affine Cipher.
