# Galois field

## Top PDF Galois field: ### Search for Monic Irreducible Polynomials with Decimal Equivalents of Polynomials over Galois Field GF(pq)

From Table 1, it seems that the complexity of other algorithms increases with value of prime p and extension q . But for this algorithm the complexity is same for all p and q . That is why for large value of p and q the algorithm takes few minutes to produce the list of all monic IPs over the examined Galois field. So this algorithm has been proved to be a better algorithm. On the other hand most other algorithms had been developed within concern of binary galois field GF (2) or Galois Field GF ( p ) where the proposed algorithm is designed in concern of extended Galois field GF ( p q ). So the aspects of the proposed algorithm have a ### AN ENHANCED GALOIS FIELD MULTIPLIER APPROACH FOR LOW AREA AND HIGH SPEED OPERATIONS

Multiplication in the finite field is regarded as the complex operation. It requires reduction of modulo specific irreducible polynomial and in the cryptographic applications it requires the operating on large numbers. Then, additionally, due to the fact that we operate in the specific field we can’t refer, in order to handle speed of the requirements of Galois field, expert in built-in hardware multiplier units. A complexity of finite field multiplier of architecture depends mostly on parameters of this field. Those parameters are the, representation of the elements of the field on basis, field size m and the irreducible polynomial f(x) generating the field. Hence, the other commonly used bases are the normal bases and the dual basis. Due to the fact that proposed multipliers we should serve ECC applications, and the other two parameters (field size m and the irreducible polynomial f(x)), are the chosen regarding ECC standards. The most recent values that are presented in Table I. ### Search for irreducible polynomials over Galois Field GF(pq)

equivalents of the monic irreducible polynomials over Galois Field with a larger value of prime, also with large extensions. So this method can reduce the complexity to find monic Irreducible Polynomials over Galois Field with large value of prime and also with large extensions of the prime field. So this would help the crypto community to build S-Boxes or ciphers using irreducible polynomials over Galois Fields with a large value of prime, also with the large extensions of the prime field. ### An Algorithm to Find the Irreducible Polynomials Over Galois Field GF(pm)

It is mentioned in  that following Inclusion-Exclusion principle of Galois Field, a non-monic irreducible polynomial is computed by multiplying a monic irreducible polynomial by α where α  GF(p) and assumes values from 2 to (p – 1). In literatures, to the best knowledge of the present authors, there is no mention of a paper in which the composite polynomial method is translated into an algorithm and in turn into a computer program. ### Comparative Analysis & Implementation of Galois Field Multiplier using Binary & One Hot Technique

For every prime number p, there exists a Galois field, also known as the finite field, over the set GF(p) having p elements with special elements 0 and 1 as the additive and multiplicative identities, respectively. It is possible to extend the fields over GF(p) to a field that consists of pm elements, where m is a nonzero positive integer. This extended field over the set GF(pm) is known as the extension of the field over GF(p). Let “+” and “_” represent the addition and multiplication operations on the field elements. Then GF(pm) forms a finite field if it forms a commutative ring with identity over these two operations. The finite fields over GF(2) and their extensions over GF(2m) are used in digital logic owing to the field elements 0 and 1 only as well as their carry free logic and ease of implementation in hardware. The finite fields over GF(2m) can be generated with monic irreducible polynomials of the form:P(x) = xm+Σ∑m-1i=0 ci:xi, where ci 2 GF(2) . Other than elements 0 and 1 the field consists of primitive elements that are multiples of the element _, where _ is the root of P(x) i.e., P(_) = 0, and P(x) is the primitive polynomial of the field. To ensure that the operations over the fields are finite, any element in the field having power > (m � 1) is reduced to an element with power < (m � 1) by reducing it with P(x). The set of elements f0; 1; _; _2; : : : ; _m�1g forms elements of the polynomial basis (PB) over a certain primitive polynomial. Any element A 2 GF(2m) is represented using the elements in PB. The polynomial basis multiplication of A(x) and B(x) over GF(2m) is defined using the following expression: C(x) = A(x) _ B(x) mod P(x) where A;B 2 GF(2m). ### EdDSA Over Galois Field GF(p^m) for Multimedia Data

Nowadays, digital signatures are being used all over the Internet. Digital signature schemes are also used in electronic transactions over block chain. Several digital signature schemes like DSA, ECDSA are in existence. But, they have limitations like large key length, high computational time for generation of signature, security compromisation. An algorithm to give a digital signature that authenticates text data and provides non-repudiation is designed. It is faster than existing digital signature schemes and has a relatively small key length. Yet, it does not compromise on the data integrity and security it offers. Implementation of certain calculations over Galois field reduces computation time and size of the signature. This algorithm can be extended to verify integrity of multimedia like image, video, etc. ### Design of CMOS Galois field arithmetic logic unit using 120nm BSIM 4 model

arithmetic circuits play a very critical role. Multiple Valued Logic (MVL) provides the key benefit of a higher density per integrated circuit area compared to traditional two valued binary logic. Quaternary (Four- valued) logic also rendition the benefit of easy interfacing to binary logic because radix 4 allows for the use of simple encoding/decoding circuits. The functional completeness is verified with a set of fundamental quaternary cells. Quaternary (radix-4) dual operand encoding principles are applied to optimize power and performance of adder circuits using standard CMOS gates technologies. Gallois field plays role in communications including error improves the codes, cryptography, switching and digital signal processing. In these applications, area and speed requirements of an IC are necessary. Therefore an proficient hardware structure for such operations is desirable.. ### Implementation of AES algorithm using Urdhwa Tiryakbhyam Sutra and Galois field Kavuri Suresh & Jagadish Reddy

terms including arithmetic, geometry (plane, co- ordinate), trigonometry, quadratic equations, factorization and even calculus. His Holiness Jagadguru Shankaracharya Bharati Krishna Teerthaji Maharaja (1884-1960) comprised all this work together and gave its mathematical explanation while discussing it for various applications. Swamhiji constructed 16 sutras (formulae) and 16 Upa sutras (sub formulae) after extensive research in Atharva Veda. The very word „Veda‟ has the derivational meaning i.e. the fountainhead and illimitable storehouse of all knowledge. Vedic mathematics is the name given to the ancient system of mathematics or, to be precise a unique technique of calculations based on simple rules and principles with which many mathematical problems can be solved, be it arithmetic, algebra, geometry or trigonometry. The system is based on 16 Vedic sutras or aphorisms, which are actually word formulae describing natural ways of solving a whole range of mathematical problems. The beauty of Vedic mathematics lies in the fact that it reduces the otherwise cumbersome-looking calculations in conventional mathematics to a very simple one. This is so because the Vedic formulae are claimed to be based on the natural principles on which the human mind works. This is a very interesting field and presents some effective algorithms which can be applied to various branches of engineering such as computing and digital signal processing. ### A novel, efficient CNTFET Galois design as a basic ternary-valued logic field

Abstract: This paper presents arithmetic operations, including addition and multiplication, in the ternary Galois field through carbon nanotube field-effect transistors (CNTFETs). Ternary logics have received considerable attention among all the multiple-valued logics. Multiple-valued logics are an alternative to common-practice binary logic, which mostly has been expanded from ternary (three-valued) logic. CNTFETs are used to improve Galois field circuit performance. In this study, a novel design technique for ternary logic gates based on CNTFETs was used to design novel, efficient Galois field circuits that will be compared with the existing resistive-load CNTFET circuit designs. In this paper, by using carbon nanotube technology and avoiding the use of resistors, we will reduce power consumption and delay, and will also achieve a better product. Simulation results using HSPICE illustrate substantial improvement in speed and power consumption. ### High computational Speed with an Optimal Utilization of Resources for Forward Error Correcting Decoder

Galois field (2 m ) concept plays important role in finding the roots for error location from error polynomial. In this concept all modulo additions are performed with logical XOR operations. Let „m‟ be the order of error polynomial and it has ability to correct the „m‟ errors. Error correction can be decided by an order of the error locator polynomial. This process involved trial and error and iteration ### Implementation of Reed Solomon Encoder and Decoder for Wireless Communications

In Digital communication error correcting codes are used for detection and correction of errors. The most powerful and widely used is Reed Solomon error correcting codes and is part of channel coding in the family of linear block codes. It can correct both burst errors and erasures. Galois field arithmetic is used for encoding and decoding of Reed Solomon code. The process involves adding redundant data to the information message to withstand effect of noise, interference and fading and retrieving it at the receiver. The implementation of proposed work is done using the matlab. ### Forward Error Correction For Gigabit Automotive Ethernet using RS(450,406) Encoder

Reed Solomon code is the most powerful error correction and detection techniques used in 1000BASE- T1 to reduce the noise in communication channel. RS(450, 406) code is based on 9-bit Galois field and this RS code also called as shortened Reed Solomon code. In the vehicle network required more bandwidth due to more new technologies is used in the car and Gigabit automotive ethernet provides fast bandwidth in all kinds of advance driver systems. In this paper ,whole process of encoding is described and it is implemented in Verilog, simulated in Cadence SimVision. The coding efficiency of Reed Solomon code is increases with the code length. This Reed Solomon code is encoded on the basis of the generator polynomial and it can correct t random error symbols. The Reed Solomon code is better than other BCH code due to its efficiency and error correction capability. The Reed Solomon code is used in communication system, storage system and in Physical Coding Sublayer (PCS). ### Galois action on special theta values

In this section we follow the interpretation of Shimura’s reciprocity law (see [Shi71]) by Gee and Stevenhagen (see [GS98], [Gee00], [Ste00]). Let K be an imaginary quadratic field and O an order in K with basis [α, 1]. The first fundamental theorem of complex multiplication states that the j-invariant j(α) is an algebraic integer and K(j(α)) is the ring class field H O of O (see, ### Unlikely intersections with Hecke translates of a special subvariety

Conjecture 3.2 is a large Galois orbits conjecture similar to others commonly used in unlikely intersections arguments. It is analogous to [DR, Conjecture 11.1] but using a different complexity function. Similarly, Conjecture 3.3 is analogous to [DR, Conjecture 12.6]. Theorem 3.4 has no conditions analogous to [DR, Conjectures 10.3 and 12.7], because the height bound we require has been proved in [Orr18] and this is sufficient to deduce the analogue of [DR, Conjecture 10.3] for our setting. ### PDF

These various techniques are dependent upon results from a broad range of subjects, including Galois cohomology, the theory of quadratic forms and quaternion algebras, and the general theory of Möbius functions. The necessary background is presented in the next chapter. We begin that chapter with an overview of the theory of profinite groups and discuss several results that will be needed in the study of filtration quotients in chap- ter 4. For example, in section 2.1.3 the descending q-central series and the Zassenhaus p-filtrations are defined and the connections between filtrations of a finitely generated pro-p group G and the structure of both the completed group algebra F p [[G]] of G and ### LOW POWER HIGH-PERFORMANCE NON-BINARY LOW-DENSITY PARITY CHECK CODER (FNB-LDPC) OVER GF (2 m) USING CHECK-NODE UNIT,

An error correction codes are one of important part in channel coding to enhance the performance of communication system. Recently, low-density parity check (LDPC) codes used as the same purpose but hardware design require large resources, which limits the performance of coders. This paper presents a low power, high-performance non-binary LDPC coder (FNB-LDPC) over Galois fields GF   2 m . The hardware realization of check-node unit (CNU) is a challenging part because it consists of big modules such as FFT/IFFT and multiplier. We overcome these problems by modified CNU structure. The proposed versatile induced flexible LDPC coder supports all field size of suggested Galois fields without the necessity to reconfigure the hardware structure to increase the performance in terms of hardware utilization, power, and delay. ### On Galois 2-extensions of the Dihedral Group.

and putting constraints on these morphisms will produce cohomology sets H n p G, A q . The Galois group of a field extension K { k is a profinite group with order being inclusion of sets and it is but natural to define an action of the Galois group on the set of field extensions as induced by group automorphisms. We will focus our attention on H 1 p G, q . In order ### ARITHM E T I C A N DG E O ME T R YO F T H EO P E NP - A D I C D I S C

criterion for good reduction, it follows that Y → D is actually a smooth lifting. 2 In particular, we obtain an “arithmetic reformulation” of the Oort Conjecture concerning the liftability of cyclic covers over an algebraically closed field k of char- acteristic p. For this, note that it suffices to prove the Oort Conjecture over the algebraic closure of a finite field, k = F p , by standard techniques of model theory. ### On Azumaya Galois extensions and skew group rings

Abstract. Two characterizations of an Azumaya Galois extension of a ring are given in terms of the Azumaya skew group ring of the Galois group over the extension and a Galois extension of a ring with a special Galois system is determined by the trace of the Galois group. ### Construction of lattice designs using MOLS

are used for forming combinations of elements of the ’p’ different fields. Combine the elements from ’p’different fields taking one from each field in all possible ways. There is evidently ’ϑ’ such combinations. If ’ϑ’ is a prime or prime power then p=1 and each such combinations is just an element of its field. Such combinations of the ’p’ field element are used as symbols for writing the Latin squares. Let ’ϑ’ combinations be written in a row and again in a column so as to obtain the summation table of all possible sums, two by two, of the row column combinations by using MOLS. This column will be called the principal column and the row, the principal row. By addition or multiplications of two combination that is by addition or multiplication of each pair of corresponding element in two combinations in the respective field. It can be easily seen that the summation table gives a Latin square. Next, each combination in the principal column is multiplier, say, a 1 ,a 2 ,...,a p ,