Which statement is true when comparing AES encryption to Triple DES (3DES)?

The assertion that AES requires less CPU utilization and employs a larger block size than 3DES is accurate.

AES (Advanced Encryption Standard) operates on a block size of 128 bits and supports key sizes of 128, 192, and 256 bits. In contrast, 3DES (Triple Data Encryption Standard), which essentially applies the older DES algorithm three times to each data block, uses a block size of only 64 bits. This smaller block size can make 3DES more susceptible to certain types of attacks, and it inherently requires more processing to handle the three passes of encryption and decryption, leading to increased CPU utilization.

Moreover, AES is often more efficient in terms of processing speed because it was designed to be faster and more efficient on a wider variety of hardware platforms, including modern, low-power devices. As a result, an AES encryption operation typically consumes less CPU power than multiple iterations of 3DES.

In summary, the choice correctly highlights that AES is not only more resource-efficient but also benefits from a larger block size, which enhances both security and performance compared to 3DES.