1, Which description about Information Theoretic Security is NOT correct? ( )Ciphertext should reveal no “information” about Plaintext (except for its length).One-Time Pad can achieve Information Theoretic Security.If the cipher can achieve Information Theoretic Security, the probability distribution of the plaintext would change after knowing the ciphertext.To achieve Information Theoretic Security, the key should be completely random and at least as long as the plaintext/ciphertext.2.Which description about Stream Cipher is NOT correct? ( )Stream cipher can achieve Information Theoretic Security.The short secret key of stream cipher can be reused.The key stream is generated by Pseudo Random Number Generator based on the key.The two parties need to share the key before communication.3.Which description about One-Time Pad is correct? ( )The key for One-Time pad can be reused.The key can be shorter than the plaintext.The ciphertext is random.We can use the text of a book as the key.

Cryptography is the study of secure communication technique that allow only the sender and intended…

Answered: , Which description about Information…

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

Related questions

Question

1, Which description about Information Theoretic Security is NOT correct? ( )

Ciphertext should reveal no “information” about Plaintext (except for its length).
One-Time Pad can achieve Information Theoretic Security.
If the cipher can achieve Information Theoretic Security, the probability distribution of the plaintext would change after knowing the ciphertext.
To achieve Information Theoretic Security, the key should be completely random and at least as long as the plaintext/ciphertext.

Which description about Stream Cipher is NOT correct? ( )