1. Directed by: Sina Manavi

2. What is AES?
AES features:
AES vs. DES
AES vs. RSA
Summary
Q&A

3.  After Des Cracked, Triple-DES which was slow they
announced in competition for calling algorithms and
between 15 algorithms on October 2000 Rijndeal
which was invented by two Belgians, Joan Daemen,
Vincent Rijmen. On 2002 Rijndael became AES.
 Rijndael is free in commercial and non-commercial use

4.  designed simple
 Low memory cost
 High speed algorithm
 The key used to decrypt and encrypt is same
 Cipher text and plain text are same size
 Fast both in Software and Hardware

6. AES is a Symmetric block cipher algorithm ,a supersedes of DES.
This cipher is good for encoding and decoding files, documents,
and etc. Reliability and high performance made it distinct
between other methods. On the other hand if you wish to use
AES in communication, because of the Key exchange problem
this problem is solved by using a asymmetric algorithm such as
RSA. Message is encoded by a private key and the receiver
decode it with the public key. Although asymmetric algorithms
are slow, we can use them for exchanging the key and encode
the data with symmetric algorithm,

7.  DES is really old while AES is relatively new
 DES is breakable while AES is still unbreakable
 DES uses a much smaller key size compared to AES
 DES uses a smaller block size compared to AES
 DES uses a balanced Feistel structure while AES uses
substitution-permutation