SHARE
SPREAD
HELP

The Tradition of Sharing

Help your friends and juniors by posting answers to the questions that you know. Also post questions that are not available.

To start with, Sr2Jr’s first step is to reduce the expenses related to education. To achieve this goal Sr2Jr organized the textbook’s question and answers. Sr2Jr is community based and need your support to fill the question and answers. The question and answers posted will be available free of cost to all.

The pleasure of all reading is doubled when one lives with another who shares the same. -Katherine Mansfield

 

#
Authors:
William Stallings
Chapter:
Classical Encryption Techniques
Exercise:
Review Questions
Question:3 | ISBN:9781292158587 | Edition: 7

Question

Differentiate between secret-key encryption and public-key encryption.

TextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbook

Answer

Private key:

 

  1. Here same key and algorithm are used for the encryption and decryption. Also known as symmetric encryption i.e., only one key is shared between sender and receiver to encrypt and decrypt the message.
  2. It was faster as one single key was used for the encryption and decryption
  3. Private key kept secret from outer reach.

 

Public key:

 

  1. Here, two keys are used for encryption and decryption. Also called asymmetric encryption or public-key encryption. One key(public key) is used for the encryption and the private key is used for the decryption of the message.
  2. Relatively slower as compared to symmetric encryption. As it uses two keys for encryption and decryption.
  3. Here, the public key is open for everyone and the private key is kept secret.
0 0

Discussions

Post the discussion to improve the above solution.