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org.bouncycastle.pqc.crypto.ntru

pack-priv Class NTRUSampling

Class Inheritance

extends Object

java.lang.Object
org.bouncycastle.pqc.crypto.ntru.NTRUSampling

Imports

org.bouncycastle.pqc.math.ntru.HPSPolynomial, .HRSSPolynomial, .Polynomial, org.bouncycastle.pqc.math.ntru.parameters.NTRUHPSParameterSet, .NTRUHRSSParameterSet, .NTRUParameterSet, org.bouncycastle.util.Arrays

NTRU sampling.

See Also: NTRU specification section 1.10

Field Summary

Modifier and Type	Field and Description
private final NTRUParameterSet	params

Constructor Summary

Access	Constructor and Description
public	NTRUSampling(NTRUParameterSet an NTRU parameter set params) Constructor

Method Summary

Modifier and Type	Method and Description
private static int	mod3(int a)
public PolynomialPair	Returns: a pair of polynomial `f` and `g` sampleFg(byte[] random byte array uniformBytes)
public HPSPolynomial	Returns: a ternary polynomial with exactly q/16 − 1 coefficients equal to 1 and q/16 − 1 coefficient equal to −1 sampleFixedType(byte[] random byte array uniformBytes)
public Polynomial	Returns: a ternary polynomial sampleIid(byte[] random byte array uniformBytes)
public HRSSPolynomial	Returns: a ternary polynomial that satisfies the non-negative correlation property sampleIidPlus(byte[] random byte array uniformBytes)
public PolynomialPair	Returns: a pair of polynomial `r` and `m` sampleRm(byte[] random byte array uniformBytes)

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

Field Detail

params	back to summary
private final NTRUParameterSet params

Constructor Detail

NTRUSampling

back to summary

public NTRUSampling(NTRUParameterSet params)

Constructor

Parameters

params:NTRUParameterSet: an NTRU parameter set

Method Detail

mod3	back to summary
private static int mod3(int a)

sampleFg	back to summary
public PolynomialPair sampleFg(byte[] uniformBytes) Parameters uniformBytes:byte[] random byte array Returns:PolynomialPair a pair of polynomial `f` and `g` See Also NTRU specification section 1.10.1

sampleFixedType	back to summary
public HPSPolynomial sampleFixedType(byte[] uniformBytes) Parameters uniformBytes:byte[] random byte array Returns:HPSPolynomial a ternary polynomial with exactly q/16 − 1 coefficients equal to 1 and q/16 − 1 coefficient equal to −1 See Also NTRU specification section 1.10.5

sampleIid	back to summary
public Polynomial sampleIid(byte[] uniformBytes) Parameters uniformBytes:byte[] random byte array Returns:Polynomial a ternary polynomial See Also NTRU specification section 1.10.3

sampleIidPlus	back to summary
public HRSSPolynomial sampleIidPlus(byte[] uniformBytes) Parameters uniformBytes:byte[] random byte array Returns:HRSSPolynomial a ternary polynomial that satisfies the non-negative correlation property See Also NTRU specification section 1.10.4

sampleRm	back to summary
public PolynomialPair sampleRm(byte[] uniformBytes) Parameters uniformBytes:byte[] random byte array Returns:PolynomialPair a pair of polynomial `r` and `m` See Also NTRU specification section 1.10.2