--This paper introduces a single method that ensures the Confidentiality, Integrity, Availability and Authentication of the message to be transmitted. Message is encrypted by the latest symmetric encryption standard called AES (Advanced Encryption Standard). A new method for calculating MAC (Message Authentication Code) based on the shared secret key used in AES, is proposed that proves the mes...

In 1976 the National Bureau of Standards, now the National Institute Standards and Technology (NIST), adopted an algorithm called the “Data Encryption Standard” (DES) as a federal information-processing standard for protecting information. DES works like this: you choose a random 56-bit key K , and then compute the function C = DESK(P ) for a 64-bit “plaintext” P . The “ciphertext,” C , is also...

Advanced Encryption Standard (AES) Algorithm has been extensively applied in the present financial applications. Sub-channel attacks are one of the main problems occurred n the AES Algorithm. Asynchronous AES Architecture is one of the leading solutions of the sub-channel attacks due to its natural properties. The AES architecture with the enhanced mix column to be proposed with reduced number ...

The present paper develops an attack on the AES algorithm, exploiting multiple byte faults in the state matrix. The work shows that inducing a random fault anywhere in one of the four diagonals of the state matrix at the input of the eighth round of the cipher leads to the deduction of the entire AES key. We also propose a more generalized fault attack which works if the fault induction does no...

The new Advanced Encryption Standard (AES) has been recently selected by the US government to replace the old Data Encryption Standard (DES) for protecting sensitive official information. Due to its simplicity and elegant algebraic structure, the choice of the AES algorithm has motivated the study of a new approach to the analysis of block ciphers. While conventional methods of cryptanalysis (e...

In their book the authors give an algebraic perspective of the Advanced Encryption Standard (AES). The cipher Rijndael won the AES competition in 2000 after three years of considerations. Unlike many block ciphers known at that time and proposed nowadays, AES-Rijndael has very explicit algebraic description. The rich algebraic structure of the cipher attracted cryptologists from the moment of a...

Advanced Encryption Standard (AES) is the most secure symmetric encryption technique that has gained worldwide acceptance. The AES based on the Rijndael Algorithm is an efficient cryptographic technique that includes generation of ciphers for encryption and inverse ciphers for decryption. Higher security and speed of encryption/decryption is ensured by operations like SubBytes (S-box)/Inv. SubB...

In this paper we describe several fault attacks on the Advanced Encryption Standard (AES). First, using optical fault induction attacks as recently publicly presented by Skorobogatov and Anderson [SA], we present an implementation independent fault attack on AES. This attack is able to determine the complete 128-bit secret key of a sealed tamper-proof smartcard by generating 128 faulty cipher t...

---------------------------------------------------ABSTRACT------------------------------------------------------Advanced Encryption Standard (AES) block cipher system is widely used in cryptographic applications. The main core of AES block cipher is the substitution table or SBox. This S-box is used to provide confusion capability for AES. In addition, to strengthen the S-Box against algebraic...

One of the major cipher symmetric algorithms is AES. Its main feature is to use S-BOX step, which is the only non-linear part of this standard possessing fixed structure. During the previous studies, it was shown that AES standard security was increased by changing the design concepts of S-BOX and production of dynamic S-BOX. In this paper, a change of AES standard security is studied by produc...