Answered: The encryption process can be performed…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

The encryption process can be performed using two basic types of encryption/decryption: symmetric encryption and asymmetric encryption. Analyze the following statements regarding these two models.

I. In symmetric cryptography, the same key is used for encryption and decryption of the message.

II. In symmetric cryptography, the same algorithm is used for both encryption and decryption.

III. In asymmetric cryptography, two keys are used in the encryption/decryption process: the public key and the private key. These keys are different from each other.

IV. In asymmetric cryptography, the sender uses his private key to encrypt a message, and keeps his public key with him to decrypt the message received later.

Only the following items are correct:

A) I, II and III
B) I, II and IV
C) I, III and IV
D) II, III and IV
E) I, II, III and IV

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