Answer:
382^2 mod
Explanation:
To determine the shared secret key, we need to use the formula (g^a mod p)^b mod p = (g^b mod p)^a mod p, where g is the generator, p is the prime, a is our secret number, and b is the value sent by Aisha. Plugging in the values, we get (7^227 mod 437)^308 mod 437 = (7^308 mod 437)^227 mod 437.
To solve for the shared secret key, we first need to calculate (7^308 mod 437). This can be done by raising 7 to the 308th power and then taking the remainder when divided by 437. We can do this by repeatedly squaring 7 and taking the remainder each time. This results in the following sequence:
7^2 mod 437 = 49
7^4 mod 437 = 161
7^8 mod 437 = 267
7^16 mod 437 = 9
7^32 mod 437 = 49
7^64 mod 437 = 161
7^128 mod 437 = 267
7^256 mod 437 = 9
7^512 mod 437 = 49
Since 512 is greater than 308, we can stop here and use the value 49 as the result of 7^308 mod 437. We can now plug this value into the formula to calculate the shared secret key: (49^227 mod 437)^308 mod 437 = (49^308 mod 437)^227 mod 437.
To solve for the shared secret key, we need to find the value of 49^308 mod 437. This can be done using the same method as before, by repeatedly squaring 49 and taking the remainder each time. This results in the following sequence:
49^2 mod 437 = 67
49^4 mod 437 = 382
49^8 mod 437 = 221
49^16 mod 437 = 67
49^32 mod 437 = 382
49^64 mod 437 = 221
49^128 mod 437 = 67
49^256 mod 437 = 382
Since 256 is greater than 308, we can stop here and use the value 382 as the result of 49^308 mod 437. We can now plug this value into the formula to calculate the shared secret key: 382^227 mod 437 = 382^227 mod 437.
To find the shared secret key, we need to calculate 382^227 mod 437. This can be done using the same method as before, by repeatedly squaring 382 and taking the remainder each time. This results in the following sequence: