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Operation of block cipher for decryption

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Reference no: EM133280261

Question

Shown below is a block diagram for the CBC mode of operation of a block cipher for decryption. Given the first ciphertext block C1 to be decrypted, describe how the block cipher in CBC decrypts C1 to produce P1. The items, labeled as A, B, C, D, and E in the diagram below involved in the decryption process need to be replaced by the actual components and mentioned in your description.

1375_Block diagram.jpg

Reference no: EM133280261

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