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If K1 = K3 and K1 and K2 are independent, your key length is 112 bits ($2*56$), but due to meet-in-the-middle attack, you have only 80 bits of security.
If K1 = K3 and K1 and K2 are independent, your key length is 112 bits ($2*56$), but due to meet-in-the-middle attack, you have only 80 bits of security.
If K1 = K3 and K1 and K2 are independent, your key length is 112 bits ($2*56$), but due to meet-in-the-middle attack, you have only 80 bits of security.
If K1 = K3 and K1 and K2 are independent, your key length is 112 bits ($2*56$), but due to meet-in-the-middle attack, you have only 80 bits of security.
If K1 = K3 and K1 and K2 are independent, your key length is 112 bits ($2*56$), but due to meet-in-the-middle attack, you have only 80 bits of security.
If K1 = K3 and K1 and K2 are independent, your key length is 112 bits ($2*56$), but due to meet-in-the-middle attack, you have only 80 bits of security.
If K1 = K3 and K1 and K2 are independent, your key length is 112 bits (2*56$2*56$), but due to meet-in-the-middle attack, you have only 80 bits80 bits of security.
If K1 = K3 and K1 and K2 are independent, your key length is 112 bits ($2*56$), but due to meet-in-the-middle attack, you have only 80 bits of security.
