COMPUTER ETHICS AND SECURITY
CRYPTOGRAPHY AND ENCRYPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Stream cipher and Block cipher
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Substitution cipher and Stream cipher
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Caesar cipher and Substitution cipher
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Block cipher and Brute cipher
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Detailed explanation-1: -Block Cipher is the type of encryption where the conversion of plaintext is performed by taking its block at a time. Stream Cipher is the type of encryption where the conversion of plaintext is performed by taking one byte of the plaintext at a time.
Detailed explanation-2: -There are two main types of stream ciphers, and they each work slightly differently. Synchronous stream ciphers: A secret key generates keystreams, and they’re made independently of both the plaintext and the ciphertext.
Detailed explanation-3: -2.1 Synchronous stream ciphers. 2.2 Self-synchronizing stream ciphers.
Detailed explanation-4: -Digital Encryption Standard (DES) Triple Digital Encryption Standard (TDES) Advanced Encryption Standard (AES) IDEA. Twofish. Serpent. 25-Apr-2022