Answer the following question: How do the majority of network-based symmetric cryptographic applications process plaintext?
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- In terms of the amount of encryption operations required to send a large file, compare cypher block chaining to cypher feedback mode. Which one is more efficient, and how much more efficient?What is the purpose of the POP3 and IMAP protocols in email retrieval? How do they differ in their handling of emails on the server?What is the purpose of the Master Secret (MS), in the context of TLSkey exchange, and how is it securely communicated?
- Is it possible to perform encryption operations in parallel on multiple blocks of plaintext in CBC mode? Explain your answer clearly!The parts of a symmetric block cipher's hardware can be summed up as follows. How does it work, and what are the key distinctions between its two primary varieties?From iterated to non-iterated queries, authoritative to root servers, and DNS records to DNS records, how exactly does the DNS function?
- In terms of the amount of encryption operations required to send a big file, compare cypher block chaining to cypher feedback mode. Which one is more efficient, and how much more so?Describe the architecture of a blockchain network and its use cases beyond cryptocurrency.Why is the User Datagram Protocol, abbreviated as UDP, not a feasible alternative for email? Describe in detail how the SMPT algorithm achieves its objectives.
- In terms of the number of encryption operations required to transfer a large file, compare cypher block chaining versus cypher feedback mode. How much more efficient is one than the other, and how much more efficient is one?How do stream ciphers differ from block ciphers? give 3 differences and explain the answer?Distinguish in considerable detail between iterated and non-iterated DNS queries, authoritative and root DNS servers, and DNS records.