Which description about the Public-key Cryptography is NOTcorrect? The key used for encryption is different from the key used for decryption. Public-key Cryptography is also known as symmetric cryptography. Public-key cryptography is slower to compute than secret-key cryptography. Public-key cryptography is based on mathematic functions

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
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      Which description about the Public-key Cryptography is NOTcorrect?

  1. The key used for encryption is different from the key used for decryption.
  2. Public-key Cryptography is also known as symmetric cryptography.
  3. Public-key cryptography is slower to compute than secret-key cryptography.
  4. Public-key cryptography is based on mathematic functions.

 

      Which description about the requirements of Public-key        Cryptography   is NOTcorrect? 

  1. It must be computationally easy to generate a public/private key pair.
  2. It must be computationally easy to encrypt using the public key.
  3. It must be computationally easy to determine the private key, given the public key.
  4. It must be computationally hard to recover the plaintext message from just the ciphertext and the public key

   Which description about the digital signature is NOTcorrect? 

  1. Digital signature is based on Public-key Cryptography.
  2. The public key is used to sign a message.
  3. The signature is usually sent along with the message.
  4. The signature can be verified by others who know the transmitter's public key.
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