Which of the following encryption methods are commonly used in Navy communications?

AES (Advanced Encryption Standard) and DES (Data Encryption Standard) are commonly used encryption methods in Navy communications due to their robustness and widespread acceptance in secure communications.

AES is a symmetric encryption algorithm that is well-known for its high level of security and efficiency. It uses key sizes of 128, 192, or 256 bits, making it suitable for protecting classified and sensitive information, ensuring that even with sophisticated computing power, brute-force attacks are unfeasible.

DES, while now considered less secure due to advances in computing power and the shorter key size of 56 bits, has historical significance and was widely used before AES was established. Some legacy systems may still use DES, although many organizations, including military branches, have moved towards using AES due to its superior security features.

In the context of Navy communications, which often involve the transmission of sensitive or classified information, the choice of encryption algorithms like AES and DES helps to ensure that communications remain confidential and secure from unauthorized access.

The other methods listed, such as MD5 and SHA, are primarily hashing algorithms rather than encryption methods and are used for data integrity rather than confidentiality. RC4 is a stream cipher that has been found vulnerable to various attacks, and while RSA is a