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GATE | GATE-CS-2017 (Set 1) | Question 13

A sender S sends a message m to receiver R, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place. (I) S can launch a birthday attack to replace m with a fraudulent message. (II) A third party attacker can launch a birthday attack to replace m with a fraudulent message. (III) R can launch a birthday attack to replace m with a fraudulent message.

(A)

(I) and (II) only

(B)

(I) only

(C)

(II) only

(D)

(II) and (III) only

Answer

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