Advanced Encryption Standard (AES) is an encryption standard adopted by the U.S. and E.U. governments and sensitive security entities.
The cryptography standard comprises three block ciphers, AES-128, AES-192 and AES-256, adopted from a larger collection originally published as Rijndael. Each AES cipher has a 128-bit block size, with key sizes of 128, 192 and 256 bits, respectively.
The AES ciphers have been analyzed extensively and are now used worldwide, as was the case with its predecessor, the Data Encryption Standard (DES). AES is the first publicly accessible and open cipher approved by the NSA for top secret information.
The Rijndael cipher was developed by two Belgian cryptographers, Joan Daemen and Vincent Rijmen, and submitted by them to the AES selection process.
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