AES encryption is a symmetric block cipher algorithm that uses a single key to encrypt and decrypt data. It is more secure than 3DES, which is an older and slower algorithm that encrypts and decrypts a key three times in sequence. AES can use different key sizes, such as 128, 192, or 256 bits, depending on the security level required. The longer the key, the more rounds of encryption and decryption are performed, making it harder to break. AES encryption is based on a substitution-permutation network, which consists of a series of operations that transform the input data into the output data using the key. References :=
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