Package sg.dex.crypto

Class Hash

java.lang.Object

sg.dex.crypto.Hash

public class Hash
extends Object

Utility class for hash functions

Author:

Mike

Field Summary

Fields

Modifier and Type	Field	Description
static byte[]	EMPTY_BYTES_SHA3

Constructor Summary

Constructors

Constructor	Description
Hash()

Method Summary

Modifier and Type	Method	Description
static byte[]	keccak256(byte[] data)	Compute the Keccak256 hash of a byte array
static byte[]	keccak256(byte[] data, int offset, int length)	Compute the Keccak256 hash of byte array segment
static byte[]	keccak256(String string)	Compute the Keccak256 hash of string, with UTF-8 encoding
static String	keccak256String(byte[] data)	Compute the Keccak256 hash of byte array
static String	keccak256String(String string)	Compute the Keccak256 hash of string, with UTF-8 encoding
static byte[]	sha3_256(byte[] data)	Compute the SHA3-256 hash of a byte array
static byte[]	sha3_256(byte[] data, int offset, int length)	Compute the SHA3-256 hash of byte array segment
static byte[]	sha3_256(String string)	Compute the SHA3-256 hash of string, with UTF-8 encoding
static String	sha3_256String(byte[] data)	Compute the sha3_256 hash of byte array
static String	sha3_256String(String string)	Compute the sha3_256 hash of string, with UTF-8 encoding

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_BYTES_SHA3

public static final byte[] EMPTY_BYTES_SHA3

Constructor Detail

Hash

public Hash()

Method Detail

keccak256

public static byte[] keccak256(byte[] data,
                               int offset,
                               int length)

Compute the Keccak256 hash of byte array segment

Parameters:

data - Input data

offset - Start offset in the array

length - Length of bytes to compute

Returns:

byte[]

sha3_256

public static byte[] sha3_256(byte[] data,
                              int offset,
                              int length)

Compute the SHA3-256 hash of byte array segment

Parameters:

data - Input data

offset - Start offset in the array

length - Length of bytes to compute

Returns:

byte[]

keccak256

public static byte[] keccak256(byte[] data)

Compute the Keccak256 hash of a byte array

Parameters:

data - Input data

Returns:

byte[]

sha3_256

public static byte[] sha3_256(byte[] data)

Compute the SHA3-256 hash of a byte array

Parameters:

data - Input data

Returns:

byte[]

keccak256

public static byte[] keccak256(String string)

Compute the Keccak256 hash of string, with UTF-8 encoding

Parameters:

string - Input string

Returns:

byte[]

sha3_256

public static byte[] sha3_256(String string)

Compute the SHA3-256 hash of string, with UTF-8 encoding

Parameters:

string - Input string

Returns:

byte[]

keccak256String

public static String keccak256String(String string)

Compute the Keccak256 hash of string, with UTF-8 encoding

Parameters:

string - Input string

Returns:

Keccak256 hash as a hex string

keccak256String

public static String keccak256String(byte[] data)

Compute the Keccak256 hash of byte array

Parameters:

data - Input data

Returns:

Keccak256 hash as a hex string

sha3_256String

public static String sha3_256String(byte[] data)

Compute the sha3_256 hash of byte array

Parameters:

data - Input data

Returns:

sha3_256 hash as a hex string

sha3_256String

public static String sha3_256String(String string)

Compute the sha3_256 hash of string, with UTF-8 encoding

Parameters:

string - Input string

Returns:

sha3_256 hash as a hex string