1. We studied stream ciphers and block ciphers in Cryptography. We also discussed some examples of these ciphers such as substitution ciphers and transposition ciphers, respectively. If we combine a stream cipher with a block cipher (by using the ciphertext from stream cipher as the plaintext in block cipher), what will be the type of resulting cipher? Will it be a stream cipher or a block cipher? 2. If we reverse the arrangement, i.e., put the block cipher before the stream cipher, what will be the type of resulting cipher? Will it be a stream cipher or a block cipher?
1. We studied stream ciphers and block ciphers in Cryptography. We also discussed some examples of these ciphers such as substitution ciphers and transposition ciphers, respectively. If we combine a stream cipher with a block cipher (by using the ciphertext from stream cipher as the plaintext in block cipher), what will be the type of resulting cipher? Will it be a stream cipher or a block cipher? 2. If we reverse the arrangement, i.e., put the block cipher before the stream cipher, what will be the type of resulting cipher? Will it be a stream cipher or a block cipher?
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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SUBJECT:-
CRYPTOGRAPHY
Transcribed Image Text:1. We studied stream ciphers and block ciphers in Cryptography.
We also discussed some examples of these ciphers such as substitution ciphers and transposition ciphers, respectively.
If we combine a stream cipher with a block cipher (by using the ciphertext from stream cipher as the plaintext in block cipher),
what will be the type of resulting cipher? Will it be a stream cipher or a block cipher?
2. If we reverse the arrangement, i.e., put the block cipher before the stream cipher, what will be the type of resulting cipher?
Will it be a stream cipher or a block cipher?
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