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RFID is one of the most promising identification schemes in the field of ubiquitous computing. Non line of sight capability makes RFID systems more protuberant than its other alternative systems. RFID systems incorporate wireless medium, so there are some associated security threats and apprehensions to system from malicious adversaries. In order to make the system more reliable and secure, numerous...
Advanced Encryption Standard (AES) is one of the most common symmetric encryption algorithms. The hardware complexity in AES is dominated by AES substitution box (S-box) which is considered as one of the most complicated and costly part of the system because it is the only non-linear structure. The proposed work employs a combinational logic design of S-Box implemented in Virtex II FPGA chip. The...
One of the most efficient methods for cracking passwords, which are hashed based on different cryptographic algorithms, is the one based on “Rainbow Tables”. Those lookup tables offer an almost optimal time-memory tradeoff in the process of recovering the plaintext password from a password hash, generated by a cryptographic hash function. In this paper, the first known such generic system is demonstrated...
The advanced encryption standard (AES) is a newly accepted secret key cryptographic standard for secure transfer of blocks of data. Among different transformations, the SubBytes transformation is the most expensive one in terms of the chip area and the power consumption in the hardware implementation of the AES. It consists of 16 S-boxes and hence the hardware optimization of the S-box is critical...
Over the past ten years, cryptographic algorithms have been found to be vulnerable against side-channel attacks such as power analysis attacks, timing attacks, electromagnetic radiation attacks and fault attacks. These attacks capture leaking information from an implementation of the algorithm in software or in hardware and apply cryptanalytical and statistical tools to recover the secret keys. A...
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