Bouncy Castle Cryptography Library 1.80 · org.bouncycastle.pqc.legacy.math.ntru.polynomial.LongPolynomial5

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.

Field Summary

Modifier and Type	Field and Description
private long[]	coeffs
private int	numCoeffs

Constructor Summary

Access	Constructor and Description
public	LongPolynomial5(IntegerPolynomial the original polynomial. Coefficients must be between 0 and 2047. p) Constructs a `LongPolynomial5` from a `IntegerPolynomial`.
private	LongPolynomial5(long[] coeffs, int numCoeffs)

Method Summary

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

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

coeffs	back to summary
private long[] coeffs

numCoeffs	back to summary
private int numCoeffs

Constructor Detail

LongPolynomial5 back to summary

LongPolynomial5	back to summary
public LongPolynomial5(IntegerPolynomial p) Constructs a `LongPolynomial5` from a `IntegerPolynomial`. The two polynomials are independent of each other. Parameters p:IntegerPolynomial the original polynomial. Coefficients must be between 0 and 2047.

public LongPolynomial5(IntegerPolynomial p)

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

Parameters

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

LongPolynomial5	back to summary
private LongPolynomial5(long[] coeffs, int numCoeffs)

Method Detail

mult	back to summary
public LongPolynomial5 mult(TernaryPolynomial poly2) Multiplies the polynomial with a `TernaryPolynomial`, taking the indices mod N and the values mod 2048.