de.flexiprovider.ec.keys
Class ECPrivateKey

java.lang.Object
  |
  +--de.flexiprovider.api.keys.PrivateKey
        |
        +--de.flexiprovider.ec.keys.ECPrivateKey

All Implemented Interfaces:

java.security.Key, Key, java.security.PrivateKey, java.io.Serializable

public class ECPrivateKey

extends PrivateKey

The interface to an EC private key. The private key is an integer s in the range [1, r - 1], where r is a prime and part of the DomainParameters (see CurveParams).

Author:

Birgit Henhapl, Michele Boivin

See Also:

ECPublicKey, Serialized Form

Fields inherited from interface java.security.Key

serialVersionUID

Fields inherited from interface java.security.PrivateKey

serialVersionUID

Constructor Summary

protected	ECPrivateKey(ECPrivateKeySpec keySpec) Construct an ECPrivateKey out of the given key specification.
protected	ECPrivateKey(FlexiBigInt s, CurveParams params) Generate a new ECPrivateKey with the specified parameters.

Method Summary

boolean	equals(java.lang.Object obj) Compare this private key with another object.
java.lang.String	getAlgorithm()
protected codec.asn1.ASN1Type	getAlgParams()
protected byte[]	getKeyData()
protected codec.asn1.ASN1ObjectIdentifier	getOID()
CurveParams	getParams() Returns the corresponding ecdomain parameters.
FlexiBigInt	getS()
int	hashCode()
java.lang.String	toString() This method returns this private key s with its corresponding ECParameterSpec as String.

Methods inherited from class de.flexiprovider.api.keys.PrivateKey

getEncoded, getFormat

Methods inherited from class java.lang.Object

, clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ECPrivateKey

protected ECPrivateKey(FlexiBigInt s,
                       CurveParams params)

Generate a new ECPrivateKey with the specified parameters.

Parameters:

s - the FlexiBigInt that represents the private key

params - the parameters

ECPrivateKey

protected ECPrivateKey(ECPrivateKeySpec keySpec)

Construct an ECPrivateKey out of the given key specification.

Parameters:

keySpec - the key specification

Method Detail

getS

public FlexiBigInt getS()

Returns:

the private key s

getAlgorithm

public java.lang.String getAlgorithm()

Returns:

the name of the algorithm

toString

public java.lang.String toString()

This method returns this private key s with its corresponding ECParameterSpec as String. The format is:
s = ...
q = ...
a = ...
b = ...
G = (x_G, y_G)
r = ...
k = ...

Overrides:

toString in class java.lang.Object

Returns:

the private key and its corresponding ecparameters as String

See Also:

CurveParams

getParams

public CurveParams getParams()

Returns the corresponding ecdomain parameters.

Returns:

the corresponding ecdomain parameters.

equals

public boolean equals(java.lang.Object obj)

Compare this private key with another object.

Overrides:

equals in class java.lang.Object

Parameters:

obj - another object

Returns:

the result of the comparison

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

getOID

protected codec.asn1.ASN1ObjectIdentifier getOID()

Overrides:

getOID in class PrivateKey

Returns:

the OID to encode in the SubjectPublicKeyInfo structure

getAlgParams

protected codec.asn1.ASN1Type getAlgParams()

Overrides:

getAlgParams in class PrivateKey

Returns:

the algorithm parameters to encode in the SubjectPublicKeyInfo structure

getKeyData

protected byte[] getKeyData()

Overrides:

getKeyData in class PrivateKey

Returns:

the keyData to encode in the SubjectPublicKeyInfo structure