AES

Features

• Symmetric key symmetric block cipher

• 128-bit data, 128/192/256-bit keys

• Stronger and faster than Triple-DES

• Provide full specification and design details

• Software implementable in C and Java

Operation of AES

Encryption Process

1. Byte Substitution (SubBytes)

2. Shift rows

3. Mix Columns

4. Add round key

Decryption Process

1. Add round key

2. Mix columns

3. Shift rows

4. Byte substitution

References

• Java AES (Advanced Encryption Standard) Algorithm Example

• Advanced Encryption Standard

• Advanced Encryption Standard

• Java使用AES加解密