Advanced Encryption Standard (AES) is a standard symmetric-key encryption with that adopted by the government of the United States. This standard consists of 3 block cipher, namely AES-128, AES-192 and AES-256, which was adopted from a larger collection that was originally published as Rijndael. Each cipher has a size of 128-bits, with each key size 128, 192, and 256 bits. AES has been analyzed extensively and is now used throughout the world, like its predecessor, the Data Encryption Standard (DES).

AES was announced by the National Institute of Standards and Technology (NIST) as Federal Information Processing Standards (FIPS) publication 197 (FIPS 197) on November 26, 2001 after the standardization process for 5 years, in which there are 15 designs are presented and evaluated encryption, before Rijndael selected as the most suitable. AES effectively become the standard of the Federal government on May 26, 2002 after approval from the Ministry of Trade. AES encryption is available in a variety of different packages. AES is a standard first publicly accessible and open password-approved by NSA for classified information.

Rijndael was developed by two Belgian cryptographers, Joan Daemen and Vincent Rijmen, and submitted by them to the AES selection process. Rijndael (pronounced [rɛinda ː l]) is a play on words from the name of the inventor.

The process shifts in the AES
There are 10, 12, or 14 rounds (round) in the AES. Total orbit is consistent with the key size used.
Each orbit contain adequate:

    Replacement Byte same as DES
    Transition = Exchange line
    Mix the Transition Path = Left & XOR bits.
    The addition of subkeys = XOR Section Key with Decision orbit
Image Process Shift in AES