Package com.syntifi.crypto.key

Class Secp256k1PrivateKey

java.lang.Object

com.syntifi.crypto.key.AbstractPrivateKey

com.syntifi.crypto.key.Secp256k1PrivateKey

public class Secp256k1PrivateKey
extends AbstractPrivateKey

secp256k1 implementation of AbstractPrivateKey

Since:

0.1.0

Constructor Summary

Constructors

Constructor	Description
Secp256k1PrivateKey()
Secp256k1PrivateKey(byte[] privateKey)

Method Summary

Modifier and Type	Method	Description
protected boolean	canEqual(java.lang.Object other)
AbstractPublicKey	derivePublicKey()	Returns a Secp256k1PublicKey object in a compressed format adding the prefix 02/03 to identify the positive or negative Y followed by the X value in the elliptic curve
static Secp256k1PrivateKey	deriveRandomKey()
boolean	equals(java.lang.Object o)
org.web3j.crypto.ECKeyPair	getKeyPair()
int	hashCode()
void	loadPrivateKey(byte[] privateKey)	Loads a private key from a byte array
void	readPrivateKey(java.io.Reader reader)	Reads the private key from a stream
void	setKeyPair(org.web3j.crypto.ECKeyPair keyPair)
byte[]	sign(byte[] message)	When encoded in DER, this becomes the following sequence of bytes:
void	writePrivateKey(java.io.Writer writer)	Writes the private key to a file

Methods inherited from class com.syntifi.crypto.key.AbstractPrivateKey

getKey, readPrivateKey, setKey, toString, writePrivateKey

Methods inherited from class java.lang.Object

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

Constructor Detail

Secp256k1PrivateKey

public Secp256k1PrivateKey(byte[] privateKey)
                    throws java.io.IOException

Throws:

java.io.IOException

Secp256k1PrivateKey

public Secp256k1PrivateKey()

Method Detail

loadPrivateKey

public void loadPrivateKey(byte[] privateKey)
                    throws java.io.IOException

Description copied from class: AbstractPrivateKey

Loads a private key from a byte array

Specified by:

loadPrivateKey in class AbstractPrivateKey

Parameters:

privateKey - the private key bytes

Throws:

java.io.IOException

readPrivateKey

public void readPrivateKey(java.io.Reader reader)
                    throws java.io.IOException

Description copied from class: AbstractPrivateKey

Reads the private key from a stream

Specified by:

readPrivateKey in class AbstractPrivateKey

Parameters:

reader - the source of the private key

Throws:

java.io.IOException - thrown if an error occurs reading the file

writePrivateKey

public void writePrivateKey(java.io.Writer writer)
                     throws java.io.IOException

Description copied from class: AbstractPrivateKey

Writes the private key to a file

Specified by:

writePrivateKey in class AbstractPrivateKey

Parameters:

writer - the target writer

Throws:

java.io.IOException - thrown if an error occurs writing the file

sign

public byte[] sign(byte[] message)

When encoded in DER, this becomes the following sequence of bytes:

0x30 b1 0x02 b2 (vr) 0x02 b3 (vs)

where:

b1 is a single byte value, equal to the length, in bytes, of the remaining list of bytes (from the first 0x02 to the end of the encoding); b2 is a single byte value, equal to the length, in bytes, of (vr); b3 is a single byte value, equal to the length, in bytes, of (vs); (vr) is the signed big-endian encoding of the value "r

", of minimal length; (vs) is the signed big-endian encoding of the value "s ", of minimal length.

Specified by:

sign in class AbstractPrivateKey

Parameters:

message - message to sign

Returns:

signed message

derivePublicKey

public AbstractPublicKey derivePublicKey()

Returns a Secp256k1PublicKey object in a compressed format adding the prefix 02/03 to identify the positive or negative Y followed by the X value in the elliptic curve

Specified by:

derivePublicKey in class AbstractPrivateKey

Returns:

the derived AbstractPublicKey

deriveRandomKey

public static Secp256k1PrivateKey deriveRandomKey()

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class AbstractPrivateKey

canEqual

protected boolean canEqual(java.lang.Object other)

Overrides:

canEqual in class AbstractPrivateKey

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractPrivateKey

getKeyPair

public org.web3j.crypto.ECKeyPair getKeyPair()

setKeyPair

public void setKeyPair(org.web3j.crypto.ECKeyPair keyPair)