Advanced encryption standard is an algorithm used for which of the following?

Data integrity is provided by cryptographic hash functions such as SHA-256 or HMAC, not by AES, which is an encryption algorithm.

Key discovery is not a recognized cryptographic function - AES does not derive or discover keys; it uses a provided secret key to perform encryption.

AES is a symmetric block cipher defined in FIPS 197 that operates on 128-bit blocks with key sizes of 128, 192, or 256 bits. It is specifically designed and optimized for encrypting large volumes of data efficiently, making it the standard choice for bulk data encryption in protocols like TLS, IPsec, and disk encryption.

Key recovery refers to mechanisms for retrieving lost encryption keys, which is a key management concern and is not a function performed by the AES algorithm itself.