Top Description Inners Fields Constructors Methods
org.bouncycastle.pqc.legacy.crypto.ntru

public Class NTRUSigningPrivateKeyParameters

extends AsymmetricKeyParameter
Class Inheritance
Imports
java.io.ByteArrayInputStream, .ByteArrayOutputStream, .IOException, .InputStream, .OutputStream, java.util.ArrayList, .List, org.bouncycastle.crypto.params.AsymmetricKeyParameter, org.bouncycastle.pqc.legacy.math.ntru.polynomial.DenseTernaryPolynomial, .IntegerPolynomial, .Polynomial, .ProductFormPolynomial, .SparseTernaryPolynomial

A NtruSign private key comprises one or more NTRUSigningPrivateKeyParameters.Basis of three polynomials each, except the zeroth basis for which h is undefined.

Nested and Inner Type Summary

Modifier and TypeClass and Description
public static class

Field Summary

Modifier and TypeField and Description
private List<NTRUSigningPrivateKeyParameters.Basis>
private NTRUSigningPublicKeyParameters

Constructor Summary

AccessConstructor and Description
public
NTRUSigningPrivateKeyParameters(byte[]
an encoded private key
b
,
NTRUSigningKeyGenerationParameters
the NtruSign parameters to use
params
)

Constructs a new private key from a byte array

public
NTRUSigningPrivateKeyParameters(InputStream
an input stream
is
,
NTRUSigningKeyGenerationParameters
the NtruSign parameters to use
params
)

Constructs a new private key from an input stream

public

Method Summary

Modifier and TypeMethod and Description
private void
add(NTRUSigningPrivateKeyParameters.Basis
a NtruSign basis
b
)

Adds a basis to the key.

public boolean
equals(Object
the reference object with which to compare.
obj
)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.
public NTRUSigningPrivateKeyParameters.Basis

Returns:

the basis at index i
getBasis
(int
the index
i
)

Returns the i-th basis

public byte[]

Returns:

the encoded key
getEncoded
()

Converts the key to a byte array

public NTRUSigningPublicKeyParameters
public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for the object.
public void
writeTo(OutputStream
an output stream
os
)

Writes the key to an output stream

Inherited from org.bouncycastle.crypto.params.AsymmetricKeyParameter:
isPrivate

Field Detail

basesback to summary
private List<NTRUSigningPrivateKeyParameters.Basis> bases
publicKeyback to summary
private NTRUSigningPublicKeyParameters publicKey

Constructor Detail

NTRUSigningPrivateKeyParametersback to summary
public NTRUSigningPrivateKeyParameters(byte[] b, NTRUSigningKeyGenerationParameters params) throws IOException

Constructs a new private key from a byte array

Parameters
b:byte[]

an encoded private key

params:NTRUSigningKeyGenerationParameters

the NtruSign parameters to use

NTRUSigningPrivateKeyParametersback to summary
public NTRUSigningPrivateKeyParameters(InputStream is, NTRUSigningKeyGenerationParameters params) throws IOException

Constructs a new private key from an input stream

Parameters
is:InputStream

an input stream

params:NTRUSigningKeyGenerationParameters

the NtruSign parameters to use

NTRUSigningPrivateKeyParametersback to summary
public NTRUSigningPrivateKeyParameters(List<NTRUSigningPrivateKeyParameters.Basis> bases, NTRUSigningPublicKeyParameters publicKey)

Method Detail

addback to summary
private void add(NTRUSigningPrivateKeyParameters.Basis b)

Adds a basis to the key.

Parameters
b:NTRUSigningPrivateKeyParameters.Basis

a NtruSign basis

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
obj:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
getBasisback to summary
public NTRUSigningPrivateKeyParameters.Basis getBasis(int i)

Returns the i-th basis

Parameters
i:int

the index

Returns:NTRUSigningPrivateKeyParameters.Basis

the basis at index i

getEncodedback to summary
public byte[] getEncoded() throws IOException

Converts the key to a byte array

Returns:byte[]

the encoded key

getPublicKeyback to summary
public NTRUSigningPublicKeyParameters getPublicKey()
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object.

Annotations
@Override
writeToback to summary
public void writeTo(OutputStream os) throws IOException

Writes the key to an output stream

Parameters
os:OutputStream

an output stream

org.bouncycastle.pqc.legacy.crypto.ntru back to summary

public Class NTRUSigningPrivateKeyParameters.Basis

extends Object
Class Inheritance
  • java.lang.Object
  • org.bouncycastle.pqc.legacy.crypto.ntru.NTRUSigningPrivateKeyParameters.Basis
Known Direct Subclasses
org.bouncycastle.pqc.legacy.crypto.ntru.NTRUSigningKeyPairGenerator.FGBasis

A NtruSign basis. Contains three polynomials f, f', h.

Field Summary

Modifier and TypeField and Description
public Polynomial
f

public Polynomial
public IntegerPolynomial
h

pack-priv NTRUSigningKeyGenerationParameters

Constructor Summary

AccessConstructor and Description
protected
Basis(Polynomial f, Polynomial fPrime, IntegerPolynomial h, NTRUSigningKeyGenerationParameters
NtruSign parameters
params
)

Constructs a new basis from polynomials f, f', h.

pack-priv
Basis(InputStream
an input stream
is
,
NTRUSigningKeyGenerationParameters
NtruSign parameters
params
,
boolean
whether to read the polynomial h (true) or only f and f' (false)
include_h
)

Reads a basis from an input stream and constructs a new basis.

Method Summary

Modifier and TypeMethod and Description
pack-priv void
encode(OutputStream
an output stream
os
,
boolean
whether to write the polynomial h (true) or only f and f' (false)
include_h
)

Writes the basis to an output stream

public boolean
equals(Object
the reference object with which to compare.
obj
)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.
private byte[]
public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for the object.
Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

fback to summary
public Polynomial f
fPrimeback to summary
public Polynomial fPrime
hback to summary
public IntegerPolynomial h
paramsback to summary
pack-priv NTRUSigningKeyGenerationParameters params

Constructor Detail

Basisback to summary
protected Basis(Polynomial f, Polynomial fPrime, IntegerPolynomial h, NTRUSigningKeyGenerationParameters params)

Constructs a new basis from polynomials f, f', h.

Parameters
params:NTRUSigningKeyGenerationParameters

NtruSign parameters

Basisback to summary
pack-priv Basis(InputStream is, NTRUSigningKeyGenerationParameters params, boolean include_h) throws IOException

Reads a basis from an input stream and constructs a new basis.

Parameters
is:InputStream

an input stream

params:NTRUSigningKeyGenerationParameters

NtruSign parameters

include_h:boolean

whether to read the polynomial h (true) or only f and f' (false)

Method Detail

encodeback to summary
pack-priv void encode(OutputStream os, boolean include_h) throws IOException

Writes the basis to an output stream

Parameters
os:OutputStream

an output stream

include_h:boolean

whether to write the polynomial h (true) or only f and f' (false)

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
obj:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
getEncodedback to summary
private byte[] getEncoded(Polynomial p)
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object.

Annotations
@Override