Encryption operations

1. Explain the key expansion process of RC2 in detail.

2. Explain the encryption and decryption operations in a detailed manner.

3. List out the steps involved in both encryption and decryption operations.

4. What is related-key attack?

1. Why NIST has selected Rijndael as the AES?

2. What are the other four algorithms that were not selected?

3. Write short description about ShiftRows() transformation that constitutes the second transformation in each round of AES.

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