Data Encryption is the process of converting the plaintext into encoded form (non-readable) and only authorized person/parties can access it. Data security is an essential part of an Individual/organization; it can be achieved by the various methods. Because of its efficacy, the Advanced Encryption Standard (AES) algorithm has been employed by many large organizations for safeguarding files in any binary format. It makes use of a symmetric key to achieve successful data encoding. To encrypt a file, it uses different key sizes. Although a bigger key size increases the degree of unpredictability, it also increases the encryption time. This project work focuses on the AES encryption technique