Problem
To avoid certain side channel attacks, most implementations of RSA make use of blinding, which works as follows for a user with RSA modulus N, public key e and private key d. After receiving a ciphertext c but before decrypting, the receiver multiplies the ciphertext by re for a randomly chosen r.
i. Describe how decryption then proceeds?
ii. Can a user of original RSA choose the encryption exponent e to be even, justify your answer?