Advance Encryption Standard AES - Information Security -with example

Advance Encryption Standard AES - Information Security AES is a symmetric block cipher standardized by NIST in 2001. Block Size: Fixed at 128 bits. Key Sizes: Can be 128, 192, or 256 bits. Rounds: Number of rounds depends on the key size (10 rounds for 128-bit keys, 12 for 192-bit keys, and 14 for 256-bit keys). Round zero: Add round key: XOR plaintext with the key. Round 1-9: SubBytes: Apply S-box to each byte. ShiftRows: Shift rows of the state. MixColumns: Mix the columns of the state. AddRoundKey: XOR state with the round key. Final Round (Round 10): SubBytes: Apply S-box. ShiftRows: Shift rows. AddRoundKey: XOR with the final round key.