KR101607812B1 - METHOD AND APPARATUS FOR PARALLEL MULTIPLICATION CALCULATION USING DICKSON BASIS ON GF(2^n) FINITE FIELD - Google Patents
METHOD AND APPARATUS FOR PARALLEL MULTIPLICATION CALCULATION USING DICKSON BASIS ON GF(2^n) FINITE FIELD Download PDFInfo
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Abstract
The present invention relates to a parallel multiplication method and apparatus using a Dixon basis on a finite field GF (2 n )
Element of Vector And a symmetric Toffler's matrix And the triangle topolitz procession ; A vector output unit Element of Vector And the TOFLitz matrices < RTI ID = 0.0 > Wow Multiplication with ( , , And outputting the vectors as vectors; The vector sum output section outputs the two calculated vectors ( Wow ) ); And a vector conversion unit Wow ), And the two elements Wow Of the Coordinate vector .
Description
The present invention relates to a parallel multiplication method and apparatus using a Dixon basis on a finite field GN (2 n ), and more particularly, to a parallel multiplication method and apparatus using a Dixson ternary polynomial (irreducible Dickson trinomial) using Dickson basis the finite field relates to a parallel multiplication method and apparatus using the Dixon base on the finite field GF (2 n) which allows to reduce the complexity of the multiplication operation on GF (2 n).
The most important and basic multiplication operations on the finite field GF (2 n ) are public key cryptography such as elliptic curve cryptography, paring-based cryptography, (coding theory) and so on.
The efficiency of computation on finite fields is strongly influenced by the choice of basis used to represent the finite field elements. The normal basis of the base has a great advantage that squaring can be performed with bit cyclic shift so that it can be performed without any cost in hardware. However, the known multiplication Multiplication is inefficient compared to using other bases.
An optimal normal basis (hereinafter referred to as "ONB") has been proposed as a special form of regular basis, but an optimal regular basis does not always exist on an arbitrary finite element.
Recently, Mullin and Mahalanobis introduced the Dickson basis of Dickson polynomial, and then Ansari and Hasan used a simpler mathematical term to define Dickson polynomials and Dickson bases, Discussed
The definition of the Dixon polynomial is as follows.
(Definition 1)
Is called a ring, To The first type of Dickson polynomial of the first kind, Is defined as follows.
At this time,
ego .especially,
about The Dickson basis is defined as follows.(Definition 2)
(Degree) sign Let's call it an irreducible polynomial. Then, silver Finite element . This base Is called the Dickson basis.
The Dickson basis is always present for arbitrary finite bodies and under appropriate conditions, the Dickson basis is the type II optimal normal basis permutation.
As a result, Dickson basis is emerging as an alternative for finite elements without optimal normal basis, and efficient multiplier design using Dickson basis is attracting attention.
Recently, Hasan and Negre used the Dixon basis as a finite element
We show that the product of two finite elements can be expressed as the product of a Toeplitz matrix and a vector.Using this
The space complexity required to perform the multiplication operation on the The number of operations required on In this paper, we propose a parallel multiplier with sub-quadratic space complexity. However, there is no satisfactory result of parallel multiplier using Dickson basis. As a result, Parallel multipliers on the chip.The background art of the present invention is disclosed in Korean Registered Patent No. 10-1094354 (Registered, December, 2011, Bit-Parallel Multiplication Method and Apparatus between Elements of a Finite Field).
According to an aspect of the present invention, there is provided a method of generating a finite field GF (refinement) defined by a Dickson tricon trinomial using a Dickson basis, 2 n ), which can reduce the complexity of a multiplication operation on a finite field GF (2 n ).
In the parallel multiplication method using the Dixon basis on the finite field GF (2 n ) according to one aspect of the present invention,
Element of Vector And a symmetric Toffler's matrix And the triangle topolitz procession ; A vector output unit Element of Vector And the TOFLitz matrices < RTI ID = 0.0 > Wow Multiplication with ( , , And outputting the vectors as vectors; The vector sum output section outputs the two calculated vectors ( Wow ) ); And a vector conversion unit Wow ), And the two elements Wow Of the Coordinate vector Into a predetermined number of bits.In the present invention, the two elements (
Wow ) In order to calculate the product of the polynomials by using the following equation (1) And then calculates a polynomial Is a polynomial To < RTI ID = 0.0 > Is calculated.(1)
Here, the expression (1)
About Called Dixon polynomial Lt; / RTI >< RTI ID = 0.0 >procession
Wow The The size of the toplex matricesego,
procession
silver The Hankel matrix of size
Vector to be.
In the present invention,
Dickson's ternary polynomial , The finite element Any two elements of ( Wow ) Is a Dickson base Is expressed as < RTI ID = 0.0 > At this time, the two elements ( Wow ) Is a coordinate vector Wow Respectively.The parallel multiplication device using the Dixon basis on the finite field GF (2 n ) according to another aspect of the present invention,
Element of Vector And a symmetric Toffler's matrix And the triangle topolitz procession A matrix generator for generating a matrix; The finite element Element of Vector And the TOFLitz matrices < RTI ID = 0.0 > Wow Multiplication with ( , , And outputting the vectors as vectors; The calculated two vectors ( Wow ) And outputs the vector sum output; And the vectors ( Wow ), And the two elements Wow Of the Coordinate vector And a vector conversion unit for converting the vector data into the vector data.In the present invention, the vector conversion unit may convert the two elements (
Wow ) In order to calculate the product of the polynomials by using the following equation (1) And then calculates a polynomial Is a polynomial Lt; RTI ID = 0.0 > Is calculated.(1)
Here, the expression (1)
About Called Dixon polynomial Lt; / RTI >< RTI ID = 0.0 >procession
Wow The The size of the toplex matricesego,
procession
silver The Hankel matrix of size
Vector to be.
In the present invention,
Dickson's ternary polynomial , The finite element Any two elements of ( Wow ) Is a Dickson base Is expressed as < RTI ID = 0.0 > At this time, the two elements ( Wow ) Is a coordinate vector Wow Respectively.According to one aspect of the present invention, the present invention can reduce the complexity of a multiplication operation on a finite field GF (2 n ) defined by the Dickson tricon trinomial, which is a dictation using Dickson basis , And can be applied to all hardware designs based on Dixon's ternary polynomial, since it can be applied to all finite fields using polynomials.
Figure 1 is a block diagram of an embodiment of the present invention,
≪ / RTI > FIG.FIG. 2 is an exemplary diagram illustrating the
FIG. 3 is a block diagram of a TOEFLITS matrix using four blocks, And vector Fig. 3 is a diagram illustrating an example of a calculation process for a product of a multiplication factor;
Fig. 4 is a cross-sectional view of the light- In the form of ), A finite element FIG. 2 is a block diagram of a parallel multiplier according to an embodiment of the present invention; FIG.
Hereinafter, an embodiment of a parallel multiplication method and apparatus using a Dixon basis on a finite field GF (2 n ) according to the present invention will be described with reference to the accompanying drawings.
In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.
Figure 1 is a block diagram of an embodiment of the present invention,
FIG. 4 is a control flowchart showing a method of performing a multiplication operation on an input signal; FIG.Fig.
Element of Vector And a symmetric Toffler's matrix < RTI ID = 0.0 > And the upper triangular Toffler's matrix (100) for forming the finite element Element of Vector And the TOFLitz matrices < RTI ID = 0.0 > Wow Multiplication with ( , , (200), calculating the two vectors ( Wow ) (300), calculating the vectors ( Wow ), And the two elements ( Wow ) Coordinate vector (Step 400).Here,
The transpose matrix of And ego to be.Each step of FIG. 1 will be described in detail as follows.
Finite element
This appointment, the Dickson ternary polynomial . ≪ / RTI >Then,
Any two elements of Wow Dickson base Is expressed as follows.
At this time, the two elements (
Wow ) Is a coordinate vector, Wow (100) and (200) of Fig. 1, respectively.The two elements (
Wow ) In order to calculate the product of the polynomials And then calculates a polynomial Is a polynomial To < RTI ID = 0.0 > .
The above equation (1)
About Called Dixon polynomial . ≪ / RTI >Here,
Wow The The size of the toplex matricesego,
procession
silver The Hankel matrix of size
Vector to be.
The definitions of the Toffler matrix and the Wankel matrix are as follows.
(Definition 3)
procession
≪ / RTI > About The matrix Is called a Toffler matrix.(Definition 4)
procession
≪ / RTI > About The matrix Is referred to as an huckle matrix.Huckel matrix
And vector Product of A toplex matrix And vector Product of . In other words, the following equation (2) holds.
1,
In this case,
The three Toeplitz matrix-vector multiplications (< RTI ID = 0.0 > ). This process is illustrated in (200) of FIG.In other words, (200) in FIG.
Vector And the sum of the products of the Soffler matrix and the vector ( ).FIG. 2 is an exemplary diagram illustrating the
As shown in FIG. 2, the product of the Toeflitz matrix and the vector is divided into four independent blocks (CMF, CVF, CM, and R) do.
Here, in particular, the block CMF is a Toffler matrix
Is symmetrical In the case of a triangular matrix And using the special property of the matrix, or May be performed in a manner having a lower spatial complexity than the block CMF of the general case (see FIGS. 2 and 3).FIG. 3 is a block diagram of a TOEFLITS matrix using four blocks,
And vector FIG. 3 is a diagram illustrating an example of a calculation process for a product of a product of a productReferring again to FIG. 2, FIG. 2 illustrates the multiplication of the Tofflerz matrix and the vector using the four blocks
) Is calculated.Since all the blocks shown in FIG. 2 are calculated by a method having a spatial complexity less than the second order, the process of FIG. 2, i.e., (200) of FIG.
FIG. 1 (300) shows two vectors calculated in (200) of FIG. 1
Wow ) ).The vectors calculated in (200) and (300)
Wow From the polynomial .1,
Next,
The complexity of the multiplier on the output.1 (100)
Lt; RTI ID = 0.0 > Wow ), The two matrices ( Wow ) Can be performed in hardware at no cost.FIG. 1 (200) shows the steps of performing the multiplication of the Toeplitz matrix-vector, and as described above,
, And the actual When it is in the form of (200) in FIG. 1, XOR gate, AND gate, Time delay is required.here
Is the time delay required when performing one XOR gate, Is the time delay required when performing one AND gate.1 (300) shows that the size
Calculating a sum of two vectors, With the XOR gate Time delay is required.1,
Thus,
The complexity of the parallel multiplier on When in shape, XOR gate, AND gate, Time delay.Fig. 4 is a cross-sectional view of the light-
In the form of ), A finite element FIG. 4 is a table showing the complexity of the parallel multipliers using the Dixon basis on the table.Figure 4
In the form of ), The binding Dickson ternary polynomial The finite element defined by And the complexity of the parallel multiplier according to the present embodiment as shown in FIG.As shown in FIG. 4, it can be seen that the parallel multiplier according to the present embodiment has a lower complexity than the conventional parallel multiplier.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, I will understand the point. Accordingly, the technical scope of the present invention should be defined by the following claims.
100: symmetric toplex matrix
And the triangle topolitz procession The formation process of200: The toplex matrices ( Wow ) And vectors ( Wow ) ≪ / RTI > , , )
300: two vectors ( Wow ) Calculating and outputting
400: vectors ( Wow ) To receive the two elements ( Wow ) Coordinate vector The process of converting to
Claims (4)
A vector output unit Element of Vector And the TOFLitz matrices < RTI ID = 0.0 > Wow Multiplication with ( , , And outputting the vectors as vectors;
The vector sum output section outputs the two calculated vectors ( Wow ) ); And
Vector conversion unit converts the vectors ( Wow ), And the two elements Wow Of the Coordinate vector (2 < n > ) of a finite field GF (2 < n > ).
The two elements ( Wow ) In order to compute,
Using the following equation (1), the product of the polynomials And then calculates a polynomial Is a polynomial Lt; RTI ID = 0.0 > ( 2n ) by using the Dixon basis.
(1)
Here, the expression (1) About Called Dixon polynomial Lt; / RTI >< RTI ID = 0.0 >
procession Wow The The size of the toplex matrices
ego,
procession silver The Hankel matrix of size
Vector to be.
The finite element Element of Vector And the TOFLitz matrices < RTI ID = 0.0 > Wow Multiplication with ( , , And outputting the vectors as vectors;
The calculated two vectors ( Wow ) And outputs the vector sum output; And
The vectors ( Wow ), And the two elements Wow Of the Coordinate vector ( 2n ) using the Dixon basis. The parallel multiplication apparatus according to claim 1,
The two elements ( Wow ) In order to calculate the product of the polynomials by using the following equation (1) And then calculates a polynomial Is a polynomial Lt; RTI ID = 0.0 > ( 2n ) on the finite field GF ( 2n ).
(1)
Here, the expression (1) About Called Dixon polynomial Lt; / RTI >< RTI ID = 0.0 >
procession Wow The The size of the toplex matrices
ego,
procession silver The Hankel matrix of size
Vector to be.
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PCT/KR2016/004372 WO2017014413A1 (en) | 2015-07-21 | 2016-04-26 | Parallel multiplication method and apparatus using dickson basis on finite field gf(2n) |
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KR20200023486A (en) * | 2017-07-24 | 2020-03-04 | 아이오와 스테이트 유니버시티 리서치 파운데이션, 인코퍼레이티드 | System and method for inverting chirp Z-transforms to O (n log n) time and O (n) memory |
KR20200022844A (en) * | 2018-08-24 | 2020-03-04 | 공주대학교 산학협력단 | A PARALLEL GF(2^m) MULTIPLIER AND MULTIPLICATION METHOD USING GAUSSIAN NORMAL BASIS |
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KR101418686B1 (en) | 2013-08-02 | 2014-07-10 | 공주대학교 산학협력단 | Subquadratic Space Complexity Parallel Multiplier and Method using type 4 Gaussian normal basis |
KR101533929B1 (en) | 2014-06-27 | 2015-07-09 | 공주대학교 산학협력단 | Subquadratic Space Complexity Parallel Multiplier for using shifted polynomial basis, method thereof, and recording medium using this |
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KR100670780B1 (en) * | 2004-10-29 | 2007-01-17 | 한국전자통신연구원 | Apparatus for hybrid multiplier in GF2^m and Method for multiplying |
KR100950581B1 (en) * | 2007-12-06 | 2010-04-01 | 고려대학교 산학협력단 | Bit-parallel multiplier and multiplying method for finite field using redundant representation |
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KR101418686B1 (en) | 2013-08-02 | 2014-07-10 | 공주대학교 산학협력단 | Subquadratic Space Complexity Parallel Multiplier and Method using type 4 Gaussian normal basis |
KR101533929B1 (en) | 2014-06-27 | 2015-07-09 | 공주대학교 산학협력단 | Subquadratic Space Complexity Parallel Multiplier for using shifted polynomial basis, method thereof, and recording medium using this |
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KR20200023486A (en) * | 2017-07-24 | 2020-03-04 | 아이오와 스테이트 유니버시티 리서치 파운데이션, 인코퍼레이티드 | System and method for inverting chirp Z-transforms to O (n log n) time and O (n) memory |
KR20200133283A (en) * | 2017-07-24 | 2020-11-26 | 아이오와 스테이트 유니버시티 리서치 파운데이션, 인코퍼레이티드 | SYSTEMS AND METHODS FOR INVERTING THE CHIRP Z-TRANSFORM IN O(n log n) TIME AND O(n) MEMORY |
KR102183973B1 (en) | 2017-07-24 | 2020-12-03 | 아이오와 스테이트 유니버시티 리서치 파운데이션, 인코퍼레이티드 | System and method for inverting chirp Z-transform into O(n log n) time and O(n) memory |
KR20200022844A (en) * | 2018-08-24 | 2020-03-04 | 공주대학교 산학협력단 | A PARALLEL GF(2^m) MULTIPLIER AND MULTIPLICATION METHOD USING GAUSSIAN NORMAL BASIS |
KR102372466B1 (en) * | 2018-08-24 | 2022-03-11 | 공주대학교 산학협력단 | A PARALLEL GF(2^m) MULTIPLIER AND MULTIPLICATION METHOD USING GAUSSIAN NORMAL BASIS |
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