Computer Hacking Forensic Investigator (CHFI) Practice Exam 2025 - Free CHFI Practice Questions and Comprehensive Study Guide

The correct choice represents a widely recognized and robust form of encryption. AES (Advanced Encryption Standard) is a symmetric encryption algorithm that encrypts data in fixed block sizes (typically 128 bits) using key sizes of 128, 192, or 256 bits. It uses the same key for both encryption and decryption, making it efficient for securing sensitive information. AES is widely adopted across various industries due to its security strength and performance, and it is often the encryption standard used for data protection in government, financial, and personal applications.

While MD5 hashing is often mentioned in discussions about data security, it is actually a hashing algorithm rather than an encryption method, and it is not suitable for data encryption because it is a one-way function. Base64 encoding is primarily used for encoding binary data into ASCII text format and does not provide encryption; it merely allows for data representation. Hexadecimal conversion entails representing binary data in a human-readable format, which does not provide security or confidentiality. Thus, AES encryption stands out as an appropriate choice for data encryption, ensuring the confidentiality and integrity of data.