Package org.web3j.crypto

Class Keys

java.lang.Object

org.web3j.crypto.Keys

public class Keys
extends Object

Crypto key utilities.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ADDRESS_LENGTH_IN_HEX
static final int	ADDRESS_SIZE
static final int	PRIVATE_KEY_LENGTH_IN_HEX

Method Summary

Modifier and Type	Method	Description
static ECKeyPair	createEcKeyPair()
static ECKeyPair	createEcKeyPair(SecureRandom random)
static ECKeyPair	deserialize(byte[] input)
static byte[]	getAddress(byte[] publicKey)
static String	getAddress(String publicKey)
static String	getAddress(BigInteger publicKey)
static String	getAddress(ECKeyPair ecKeyPair)
static byte[]	serialize(ECKeyPair ecKeyPair)
static String	toChecksumAddress(String address)	Checksum address encoding as per EIP-55.

Methods inherited from class java.lang.Object

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

Field Details

ADDRESS_SIZE

public static final int ADDRESS_SIZE

See Also:

• Constant Field Values

ADDRESS_LENGTH_IN_HEX

public static final int ADDRESS_LENGTH_IN_HEX

See Also:

• Constant Field Values

PRIVATE_KEY_LENGTH_IN_HEX

public static final int PRIVATE_KEY_LENGTH_IN_HEX

See Also:

• Constant Field Values

Method Details

createEcKeyPair

public static ECKeyPair createEcKeyPair()
                                 throws InvalidAlgorithmParameterException,
NoSuchAlgorithmException,
NoSuchProviderException

Throws:

InvalidAlgorithmParameterException

NoSuchAlgorithmException

NoSuchProviderException

createEcKeyPair

public static ECKeyPair createEcKeyPair(SecureRandom random)
                                 throws InvalidAlgorithmParameterException,
NoSuchAlgorithmException,
NoSuchProviderException

Throws:

InvalidAlgorithmParameterException

NoSuchAlgorithmException

NoSuchProviderException

getAddress

public static String getAddress(ECKeyPair ecKeyPair)

getAddress

public static String getAddress(BigInteger publicKey)

getAddress

public static String getAddress(String publicKey)

getAddress

public static byte[] getAddress(byte[] publicKey)

toChecksumAddress

public static String toChecksumAddress(String address)

Checksum address encoding as per EIP-55.

Parameters:

address - a valid hex encoded address

Returns:

hex encoded checksum address

serialize

public static byte[] serialize(ECKeyPair ecKeyPair)

deserialize

public static ECKeyPair deserialize(byte[] input)