The following give the number of bits in an encryption key. For each, calculate the average time required to crack that key assuming we can perform 10 million attempts per second. Be sure to use time...

The following give the number of bits in an encryption key. For each, calculate the average time required to crack that key assuming we can perform 10 million attempts per second. Be sure to use time units that are reansably close to the cracking time or specify in years if the time takes more than a year.

a. 40 bits

b. 56 bits

c. 64 bits

d. 80 bits

e. 128 bits

f. 256 bits