The AES (Advanced Encryption Standard) is a standard for secure symmetric encryption. It is the successor to the Data Encryption Standard (DES), which had a key length of only 56 bits. It is a symmetric block cipher with a block length of 128 and key lengths of 128, 192 and 256 bits. Alternatively, the AES is also called the Rijndael algorithm – derived from the names of the developers Joan Daemen and Vincent Rijmen.
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