The accuracy of the multiplication depends on the precision of the multiplier. The variable precision floating point multiplier will have more accuracy when compared with the fixed precision multiplier. In this paper a variable precision floating point multiplier is considered. An effective BIST test pattern generator for variable precision floating point multiplier is proposed. A BIST TPG cons...

The main goal of genetic programming is to get best pattern in terms of randomness. There are various methods for random pattern generation. The patterns generated in this paper are pseudo-random in nature. Different types of linear feedback shift register (LFSR) are used to generate pseudo-random patterns and test their randomness by various testing algorithms. Random patterns are compared acc...

Correlation attacks on stream cipher are divide and conquer attacks applied to nonlinear combination generators based on linear feedback shift registers. These are cipher text only attacks that exploit the correlation between the cipher text and the underlying shift register sequences to recover the initial state of the underlying LFSRs. Fast correlation attacks are based on use of parity check...

The paper examines a simple conceptual modification of the operation unit of a RISC processor. We propose to substitute a part of the conventional general purpose register file by a shift register for all operation results. The presented approach allows to reduce the instruction size for a great deal of instructions and so the instruction stream, and it is also a promising approach to make the ...

Physical Unclonable Functions (PUFs) are widely used to generate random Numbers. In this paper we propose a new architecture in which an Arbiter Based PUF has been employed as a nonlinear function in Nonlinear Feedback Shift Register (NFSR) to generate true random numbers. The rate of producing the output bit streams is 10 million bits per second. The proposed RNG is able to pass all NIST tests...

The Tiny Encryption Algorithm (TEA) is a suitable lightweight cryptographic algorithm used in medium security systems such as RFID systems. The TEA is a fiestel structure used to satisfy the confusion and the diffusion properties to hide the statistical characteristics of the plaintext. However, TEA has few weaknesses, most notably from equivalent keys and related-key attacks. So, a Modified TE...

A new lossless test vector compressionn scheme is presentedd whichh combines linear feedback shift register (LFSR) reseedingg andd statistical codingg inn aa powerful way. Test vectors cann be encodedd as LFSR seeds by solvingg aa system of linear equations. The solutionn space of the linear equations cann be quite large. The proposedd methodd takes advantage of this large solutionn space too f...

In order to reduce key sizes and bandwidth, cryptographic systems have been proposed using minimal polynomials to represent finite field elements. These systems are essentially equivalent to systems based on characteristic sequences generated by a linear feedback shift register (LFSR). We propose a general class of LFSR-based key agreement and signature schemes based on n-th order characteristi...

The term “functional BIST” describes a test method to control functional modules so that they generate a deterministic test set, which targets structural faults within other parts of the system. It is a promising solution for self-testing complex digital systems at reduced costs in terms of area overhead and performance degradation. While previous work mainly investigated the use of functional ...

Cellular automata (CA) are dynamic systems, successfully used in mathematics, biology, chemistry or physics. The random generated by these systems has also been used in computer science (e.g. games industry) as well as in cryptographic applications (e.g. random number generators). As in the case of more well-known LFSR (Linear Feedback Shift Register), the usefulness of these systems in cryptog...