org.bouncycastle.pqc.math.ntru.polynomial

Interface Polynomial

All Known Subinterfaces:

TernaryPolynomial

All Known Implementing Classes:

DenseTernaryPolynomial, IntegerPolynomial, ProductFormPolynomial, SparseTernaryPolynomial

public interface Polynomial

Method Summary

Modifier and Type	Method and Description
BigIntPolynomial	mult(BigIntPolynomial poly2) Multiplies the polynomial by a BigIntPolynomial, taking the indices mod N.
IntegerPolynomial	mult(IntegerPolynomial poly2) Multiplies the polynomial by an IntegerPolynomial, taking the indices mod N.
IntegerPolynomial	mult(IntegerPolynomial poly2, int modulus) Multiplies the polynomial by an IntegerPolynomial, taking the coefficient values mod modulus and the indices mod N.
IntegerPolynomial	toIntegerPolynomial() Returns a polynomial that is equal to this polynomial (in the sense that mult(IntegerPolynomial, int) returns equal IntegerPolynomials).

Method Detail

mult

IntegerPolynomial mult(IntegerPolynomial poly2)

Multiplies the polynomial by an IntegerPolynomial, taking the indices mod N.

Parameters:

poly2 - a polynomial

Returns:

the product of the two polynomials

mult

IntegerPolynomial mult(IntegerPolynomial poly2,
                       int modulus)

Multiplies the polynomial by an IntegerPolynomial, taking the coefficient values mod modulus and the indices mod N.

Parameters:

poly2 - a polynomial

modulus - a modulus to apply

Returns:

the product of the two polynomials

toIntegerPolynomial

IntegerPolynomial toIntegerPolynomial()

Returns a polynomial that is equal to this polynomial (in the sense that mult(IntegerPolynomial, int) returns equal IntegerPolynomials). The new polynomial is guaranteed to be independent of the original.

Returns:

a new IntegerPolynomial.

mult

BigIntPolynomial mult(BigIntPolynomial poly2)

Multiplies the polynomial by a BigIntPolynomial, taking the indices mod N. Does not change this polynomial but returns the result as a new polynomial.
Both polynomials must have the same number of coefficients.

Parameters:

poly2 - the polynomial to multiply by

Returns:

a new polynomial