The Advanced Encryption Standard (AES) in cryptography, also known as the Advanced Encryption Standard Rijndael encryption method, is a block encryption standard adopted by the U.S. federal government. This standard is used to replace the original DES. It has been analyzed by many parties and is widely used around the world. After a five-year selection process, the Advanced Encryption Standard was published by the National Institute of Standards and Technology (NIST) in FIPS PUB 197 on November 26, 2001, and became an effective standard on May 26, 2002. In 2006, Advanced Encryption Standard has become one of the most popular algorithms for symmetric key encryption.
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