The Effects of the Omission of Last Round's MixColumns on AES

Study of Effect of Removal of Shiftrows and Mixcolumns Stages of AES and AES-KDS on their Encryption Quality and Hence Security

MixColumns Properties and Attacks on (round-reduced) AES with a Single Secret S-Box

In this paper, we present new key-recovery attacks on AES with a single secret S-Box. Several attacks for this model have been proposed in literature, the most recent ones at Crypto’16 and FSE’17. Both these attacks exploit a particular property of the MixColumns matrix to recover the secret-key. In this work, we show that the same attacks work exploiting a weaker property of the MixColumns mat...

A New Dna Based Approach of Generating Key- Dependentmixcolumns Transformation

The use of key-dependent MixColumns can be regarded as one of the applied techniques for changing the quality of a cryptographic algorithm. This article explains one approach for altering the MixColumns transformation engaged in the AES algorithm. The approach employed methods inspired from DNA processes and structure, which relied on the key.The parameters of the proposedMixCloumns have charac...

Fpga Implementations of Advanced Encryption Standard: a Survey

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...

Formalization of the Advanced Encryption Standard. Part I

In this article, we formalize the Advanced Encryption Standard (AES). AES, which is the most widely used symmetric cryptosystem in the world, is a block cipher that was selected by the National Institute of Standards and Technology (NIST) as an official Federal Information Processing Standard for the United States in 2001 [12]. AES is the successor to DES [13], which was formerly the most widel...