org.bitcoin.x6763.crypto.ecdsa
Class PrivateKey

java.lang.Object
  org.bitcoin.x6763.crypto.ecdsa.PrivateKey

All Implemented Interfaces:

java.io.Serializable, java.security.Key, java.security.PrivateKey, ECKey, ECPrivateKey, Secp256k1

public class PrivateKey
extends java.lang.Object
implements Secp256k1, ECPrivateKey

An elliptic curve private key, generated for the secp256k1 elliptic curve.

Author:

x6763

See Also:

Serialized Form

Field Summary

static long

serialVersionUID

Fields inherited from interface org.bitcoin.x6763.crypto.ecdsa.Secp256k1

a, algorithm, b, bigX, bigY, curve, G, h, n, p, parameters, x, y

Constructor Summary

PrivateKey(java.math.BigInteger S)
Creates a private key object from it's BigInteger form

PrivateKey(byte[] sBytes)
Creates a private key object from a 256-bit byte array

Method Summary

java.lang.String	getAlgorithm() Returns the algorithm name, "ECDSA".
byte[]	getEncoded() Returns the serialized private key.
java.lang.String	getFormat()
ECDomainParameters	getParams() Returns the elliptic curve domain parameters for the secp256k1 curve.
PublicKey	getPublic() Derive a public key from this private key
java.math.BigInteger	getS() Returns the 256-bit private key number
byte[]	serialize() Serializes the private key into an array of 32 bytes.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

PrivateKey

public PrivateKey(java.math.BigInteger S)

Creates a private key object from it's BigInteger form

Parameters:

S - the private key in BigInteger form

PrivateKey

public PrivateKey(byte[] sBytes)

Creates a private key object from a 256-bit byte array

Parameters:

sBytes - the array of bytes representing the private key

Method Detail

getPublic

public PublicKey getPublic()

Derive a public key from this private key

Returns:

a public key derived from this private key

getParams

public ECDomainParameters getParams()

Returns the elliptic curve domain parameters for the secp256k1 curve.

Specified by:

getParams in interface ECKey

Returns:

the secp256k1 elliptic curve domain parameters

getAlgorithm

public java.lang.String getAlgorithm()

Returns the algorithm name, "ECDSA".

Specified by:

getAlgorithm in interface java.security.Key

Returns:

the algorithm name, "EDCSA"

getEncoded

public byte[] getEncoded()

Returns the serialized private key. Same as serialize().

Specified by:

getEncoded in interface java.security.Key

Returns:

an array of 32 bytes

See Also:

serialize()

getFormat

public java.lang.String getFormat()

Specified by:

getFormat in interface java.security.Key

Returns:

null

getS

public java.math.BigInteger getS()

Returns the 256-bit private key number

Specified by:

getS in interface ECPrivateKey

Returns:

the BigInteger value of the private key

serialize

public byte[] serialize()

Serializes the private key into an array of 32 bytes. This format is not compatible with the DER-encoded private keys in wallets generated by the official Bitcoin software as of Bitcoin version 0.3.19.

Returns:

an array of 32 bytes