org.bouncycastle.pqc.math.ntru
Class Polynomial

java.lang.Object
  org.bouncycastle.pqc.math.ntru.Polynomial

Direct Known Subclasses:

HPSPolynomial, HRSSPolynomial

public abstract class Polynomial

extends java.lang.Object

Polynomial for org.bouncycastle.pqc.crypto.ntru.

Field Summary

short[]	coeffs An array of coefficients
protected NTRUParameterSet	params

Constructor Summary

Polynomial(NTRUParameterSet params)

Method Summary

abstract void	lift(Polynomial a)
void	mod3PhiN()
void	modQPhiN()
void	r2Inv(Polynomial a)
void	rqInv(Polynomial a)
void	rqMul(Polynomial a, Polynomial b)
void	rqSumZeroFromBytes(byte[] a) Unpack a Rq0 polynomial
byte[]	rqSumZeroToBytes(int len) Pack a Rq0 polynomial as a byte array
void	rqToS3(Polynomial a)
void	s3FromBytes(byte[] msg) Unpack a S3 polynomial
void	s3Inv(Polynomial a)
void	s3Mul(Polynomial a, Polynomial b)
void	s3ToBytes(byte[] msg, int msgOff)
byte[]	s3ToBytes(int messageSize) Pack an S3 polynomial as a byte array
abstract void	sqFromBytes(byte[] a) Unpack a Sq polynomial
void	sqMul(Polynomial a, Polynomial b)
abstract byte[]	sqToBytes(int len) Pack Sq polynomial as a byte array
void	trinaryZqToZ3()
void	z3ToZq()

Methods inherited from class java.lang.Object

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

Field Detail

coeffs

public short[] coeffs

An array of coefficients

params

protected NTRUParameterSet params

Constructor Detail

Polynomial

public Polynomial(NTRUParameterSet params)

Method Detail

mod3PhiN

public void mod3PhiN()

modQPhiN

public void modQPhiN()

sqToBytes

public abstract byte[] sqToBytes(int len)

Pack Sq polynomial as a byte array

Parameters:

len - array length of packed polynomial

Returns:

See Also:

NTRU specification section 1.8.5

sqFromBytes

public abstract void sqFromBytes(byte[] a)

Unpack a Sq polynomial

Parameters:

a - byte array of packed polynomial

See Also:

NTRU specification section 1.8.6

rqSumZeroToBytes

public byte[] rqSumZeroToBytes(int len)

Pack a Rq0 polynomial as a byte array

Parameters:

len - array length of packed polynomial

Returns:

See Also:

NTRU specification section 1.8.3

rqSumZeroFromBytes

public void rqSumZeroFromBytes(byte[] a)

Unpack a Rq0 polynomial

Parameters:

a - byte array of packed polynomial

See Also:

NTRU specification section 1.8.4

s3ToBytes

public byte[] s3ToBytes(int messageSize)

Pack an S3 polynomial as a byte array

Parameters:

messageSize - array length of packed polynomial

Returns:

See Also:

NTRU specification section 1.8.7

s3ToBytes

public void s3ToBytes(byte[] msg,
                      int msgOff)

s3FromBytes

public void s3FromBytes(byte[] msg)

Unpack a S3 polynomial

Parameters:

msg - byte array of packed polynomial

See Also:

NTRU specification section 1.8.8

sqMul

public void sqMul(Polynomial a,
                  Polynomial b)

rqMul

public void rqMul(Polynomial a,
                  Polynomial b)

s3Mul

public void s3Mul(Polynomial a,
                  Polynomial b)

lift

public abstract void lift(Polynomial a)

Parameters:

a -

See Also:

NTRU specification section 1.9.3

rqToS3

public void rqToS3(Polynomial a)

r2Inv

public void r2Inv(Polynomial a)

rqInv

public void rqInv(Polynomial a)

s3Inv

public void s3Inv(Polynomial a)

z3ToZq

public void z3ToZq()

trinaryZqToZ3

public void trinaryZqToZ3()