Perform one round DES encryption

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Reference no: EM133194854

Question

1. Given a 64-bit plaintext FFFE 397D AC28 8855 and 48-bit Round key 4D77 32C5 29EF, perform one round DES encryption and decrypt the computed cipher retrieving the original input.

2. Given a 56-bit key 88DF E9DC C277 CA, compute 48-bit Round1, Round2, and Round3 keys.

Reference no: EM133194854

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