Brute Force Time Estimate

Problem

Estimate the average number of seconds to brute force a keyspace when a guesser can try `rate` keys per second. On average half the keyspace is searched:

time = keyspace / (2 * rate)

Hint

The factor of two is the expected position of the key in the search order.

Test cases

case 1

in: [1000000,1000]

expected: 500

case 2

in: [100,1]

expected: 50

case 3

in: [4294967296,1000000]

expected: 2147.483648

case 4

in: [0,10]

expected: 0

Starter codePython

def brute_force_seconds(keyspace, rate):
    # Your code here
    pass

4 test cases · run your code against them in the editor