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Problem 1: We have learned four confidentiality modes of operation for use with an underlying symmetric key block cipher algorithm: Codebook (ECB), Cipher Block Chaining

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Problem 1: We have learned four confidentiality modes of operation for use with an underlying symmetric key block cipher algorithm: Codebook (ECB), Cipher Block Chaining (CBC), Cipher Feedback (CFB), and Counter (CTR). Which of these four modes can perform most of the decryption work in parallel? Select all applicable answers and explain your selection

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