Package org.bouncycastle.pqc.legacy.math.ntru.polynomial

Class LongPolynomial5

java.lang.Object

org.bouncycastle.pqc.legacy.math.ntru.polynomial.LongPolynomial5

public class LongPolynomial5
extends Object

A polynomial class that combines five coefficients into one long value for faster multiplication by a ternary polynomial.
Coefficients can be between 0 and 2047 and are stored in bits 0..11, 12..23, ..., 48..59 of a long number.

Constructor Summary

Constructors

Constructor	Description
LongPolynomial5(IntegerPolynomial p)	Constructs a LongPolynomial5 from a IntegerPolynomial.

Method Summary

Modifier and Type	Method	Description
LongPolynomial5	mult(TernaryPolynomial poly2)	Multiplies the polynomial with a TernaryPolynomial, taking the indices mod N and the values mod 2048.
IntegerPolynomial	toIntegerPolynomial()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

LongPolynomial5

public LongPolynomial5(IntegerPolynomial p)

Constructs a LongPolynomial5 from a IntegerPolynomial. The two polynomials are independent of each other.

Parameters:

p - the original polynomial. Coefficients must be between 0 and 2047.

Method Details

mult

public LongPolynomial5 mult(TernaryPolynomial poly2)

Multiplies the polynomial with a TernaryPolynomial, taking the indices mod N and the values mod 2048.

toIntegerPolynomial

public IntegerPolynomial toIntegerPolynomial()