What Is the Advanced Encryption Standard?

The Advanced Encryption Standard (AES) is a cornerstone of modern cryptography, used to secure data. It is a highly trusted algorithm developed in 2001 by the National Institute of Standards and Technology (NIST). Recognized globally, it works by converting data into an unreadable format that cannot be deciphered without the right key.

1. ENCRYPTION
STANDARD?
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WHAT IS THE ADVANCED

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The Advanced Encryption Standard (AES) is a cornerstone of
modern cryptography, used to secure data. It is a highly trusted
algorithm developed in 2001 by the National Institute of
Standards and Technology (NIST).
CRYPTOGRAPHY

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Recognized globally, it works by converting
data into an unreadable format that cannot
be deciphered without the right key. AES is
efficient and widely used to encrypt files,
protect sensitive data and secure internet
communication.
THE CIPHERS
AES is based on a substitution-permutation
network design; it is used both in hardware
and software and is a variant of Rjindael (a
family of ciphers with different block and key
sizes). The standard has a key size of 128, 192
or 256 bits and a fixed block size of 128 bits.
In an AES cipher the key size specifies the
number of transformation rounds that convert
the plaintext into the ciphertext. There are 10
rounds for 128-bit keys, 12 rounds for 192-bit
keys, and14 rounds for 256-bit keys.
Several processing steps are incorporated
into each round, with a set of reverse rounds
applied using the same encryption key to turn
ciphertext back into plaintext.
AES is based on a substitution-
permutation network design;
it is used both in hardware and
software and is a variant of
Rjindael.

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