GATE Papers >> CSE >> 2013 >> Question No 13

Question No. 13 CSE | GATE 2013

Using public key cryptography, X adds a digital signature σ to message M, encrypts <M, σ>, and sends it to Y, where it is decrypted. Which one of the following sequences of keys is used for the operations?


Answer : (D) Encryption: X’s private key followed by Y’s public key; Decryption: Y’s private key followed by X’s public key


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