Question: Help me to calculate this Computer science question . Thank you Problem 1 (6/20): 1. Describe and compare two operation modes of block ciphers: Output

Help me to calculate this Computer science question . Thank you

Help me to calculate this Computer science question . Thank you Problem

Problem 1 (6/20): 1. Describe and compare two operation modes of block ciphers: Output Feedback Mode OFB) and Cipher Feedback Mode (CFB) 2. Following hash function is built from block cipher with the encryption e). Draw its block diagrams

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