org.bouncycastle.pqc.math.ntru.parameters

Class NTRUParameterSet

java.lang.Object

org.bouncycastle.pqc.math.ntru.parameters.NTRUParameterSet

Direct Known Subclasses:

NTRUHPSParameterSet, NTRUHRSSParameterSet

public abstract class NTRUParameterSet
extends java.lang.Object

Abstract class for all NTRU parameter sets.

See Also:

NTRUHPSParameterSet, NTRUHRSSParameterSet, NTRU specification document

Constructor Summary

Constructors

Constructor and Description
NTRUParameterSet(int n, int logQ, int seedBytes, int prfKeyBytes, int sharedKeyBytes)

Method Summary

Modifier and Type	Method and Description
abstract Polynomial	createPolynomial() Creates a polynomial based on this parameter set.
int	logQ() logq
int	n() n
int	ntruCiphertextBytes() The number of bytes in a ciphertext for the KEM.
int	ntruPublicKeyBytes() The number of bytes in a public key for the KEM.
int	ntruSecretKeyBytes() The number of bytes in a private key for the KEM.
int	owcpaBytes() The number of bytes in a ciphertext for the DPKE.
int	owcpaMsgBytes() The number of bytes in a plaintext for the DPKE.
int	owcpaPublicKeyBytes() The number of bytes in a public key for the DPKE.
int	owcpaSecretKeyBytes() The number of bytes in a private key for the DPKE.
int	packDegree()
int	packTrinaryBytes()
int	prfKeyBytes() The number of bytes used to key the implicit rejection mechanism.
int	q() q
abstract int	sampleFgBytes()
int	sampleFixedTypeBytes()
int	sampleIidBytes()
abstract int	sampleRmBytes()
int	seedBytes() The number of random bytes consumed by keygen.
int	sharedKeyBytes()

Methods inherited from class java.lang.Object

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

Constructor Detail

NTRUParameterSet

public NTRUParameterSet(int n,
                        int logQ,
                        int seedBytes,
                        int prfKeyBytes,
                        int sharedKeyBytes)

Method Detail

createPolynomial

public abstract Polynomial createPolynomial()

Creates a polynomial based on this parameter set.

Returns:

an instance of Polynomial

n

public int n()

n

Returns:

n is a prime and both 2 and 3 are of order n − 1 in (Z/n)×

logQ

public int logQ()

logq

Returns:

log2(q)

q

public int q()

q

Returns:

q is a power of two

seedBytes

public int seedBytes()

The number of random bytes consumed by keygen.

Returns:

key_seed_bits/8

prfKeyBytes

public int prfKeyBytes()

The number of bytes used to key the implicit rejection mechanism.

Returns:

prf_key_bits/8

sharedKeyBytes

public int sharedKeyBytes()

Returns:

kem_shared_key_bits/8

sampleIidBytes

public int sampleIidBytes()

Returns:

sample_iid_bits/8

sampleFixedTypeBytes

public int sampleFixedTypeBytes()

Returns:

sample_xed_type_bits

sampleFgBytes

public abstract int sampleFgBytes()

Returns:

sample_key_bits/8

sampleRmBytes

public abstract int sampleRmBytes()

Returns:

sample_plaintext_bits/8

packDegree

public int packDegree()

packTrinaryBytes

public int packTrinaryBytes()

Returns:

packed_s3_bytes

owcpaMsgBytes

public int owcpaMsgBytes()

The number of bytes in a plaintext for the DPKE.

Returns:

dpke_plaintext_bytes

owcpaPublicKeyBytes

public int owcpaPublicKeyBytes()

The number of bytes in a public key for the DPKE.

Returns:

dpke_public_key_bytes

owcpaSecretKeyBytes

public int owcpaSecretKeyBytes()

The number of bytes in a private key for the DPKE.

Returns:

dpke_private_key_bytes

owcpaBytes

public int owcpaBytes()

The number of bytes in a ciphertext for the DPKE.

Returns:

dpke_ciphertext_bytes

ntruPublicKeyBytes

public int ntruPublicKeyBytes()

The number of bytes in a public key for the KEM.

Returns:

kem_public_key_bytes

ntruSecretKeyBytes

public int ntruSecretKeyBytes()

The number of bytes in a private key for the KEM.

Returns:

kem_private_key_bytes

ntruCiphertextBytes

public int ntruCiphertextBytes()

The number of bytes in a ciphertext for the KEM.

Returns:

kem_ciphertext_bytes