1
a. 21 minutes
b. 63 minutes
c. 210 minutes
d. none of the above.

1 Answer

2

Answer:

b. 63 minutes

Step-by-step explanation:

Given;

number of times the hash function is applied  = 12

time taken to brute force one application, = 21 minutes

Apply proportion, bearing in mind that 4 available resources should take less time;

1 available resource ------- 21 minutes

4 available resources ------ x

Thus, x  = 21 minutes / 4

When applied  12 times, the time should be \frac{21 \ minutes}{4} \ \times \ 12 \ = 63 \ minutes \\\\

Therefore, the correct option is B, 63 minutes

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answered 1 year ago