What encryption method is utilized in WPA2-PSK?

WPA2-PSK (Wi-Fi Protected Access 2 - Pre-Shared Key) uses the Advanced Encryption Standard (AES) as its encryption method. AES is a symmetric encryption algorithm that is widely recognized for its security and efficiency, making it ideal for securing wireless communications. It operates on fixed block sizes of 128 bits and supports key lengths of 128, 192, and 256 bits, which enhances the robustness of the encryption used in a WPA2-PSK environment.

WPA2 has been designed to provide stronger security than its predecessor, WPA, primarily by implementing AES encryption and ensuring that data confidentiality, integrity, and authenticity are maintained. This advancement allows WPA2-PSK to support both personal and enterprise-level security setups effectively. The reliance on AES is also a key reason why WPA2 has become a standard in today's wireless security framework.

The other options, such as DES, RC4 Encryption, and Triple DES, are either outdated or considered less secure compared to AES. These technologies have vulnerabilities that have been exploited over time, which makes them unsuitable for modern wireless security standards like WPA2-PSK.