AES 256- bit Encryption is a 256-bit encryption algorithm that works with plaintext data.
AES or Advanced Encryption Standard is state-of-the-art encryption developed in 2001 by the U.S. National Institute of Standards and Technology. AES uses the same key to encrypt and decrypt the data, making it a symmetric-key encryption algorithm.
It is a highly complicated encryption to crack, and for this reason, an advanced variation of the same is used by the U.S National Security Agency.