com.github.iotexproject.antenna.crypto

Class Hash

java.lang.Object

com.github.iotexproject.antenna.crypto.Hash

public class Hash
extends Object

hash utils.

Author:

Yang XuePing

Constructor Summary

Constructors

Constructor and Description
Hash()

Method Summary

Modifier and Type	Method and Description
static byte[]	hmacSha512(byte[] key, byte[] input)
static byte[]	sha256(byte[] input) Generates SHA-256 digest for the given input.
static byte[]	sha256hash160(byte[] input)
static byte[]	sha3(byte[] input) Keccak-256 hash function.
static byte[]	sha3(byte[] input, int offset, int length) Keccak-256 hash function.
static String	sha3(String hexInput) Keccak-256 hash function.
static String	sha3String(String utf8String) Keccak-256 hash function that operates on a UTF-8 encoded String.

Methods inherited from class java.lang.Object

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

Constructor Detail

Hash

public Hash()

Method Detail

sha3

public static String sha3(String hexInput)

Keccak-256 hash function.

Parameters:

hexInput - hex encoded input data with optional 0x prefix

Returns:

hash value as hex encoded string

sha3

public static byte[] sha3(byte[] input,
                          int offset,
                          int length)

Keccak-256 hash function.

Parameters:

input - binary encoded input data

offset - of start of data

length - of data

Returns:

hash value

sha3

public static byte[] sha3(byte[] input)

Keccak-256 hash function.

Parameters:

input - binary encoded input data

Returns:

hash value

sha3String

public static String sha3String(String utf8String)

Keccak-256 hash function that operates on a UTF-8 encoded String.

Parameters:

utf8String - UTF-8 encoded string

Returns:

hash value as hex encoded string

sha256

public static byte[] sha256(byte[] input)

Generates SHA-256 digest for the given input.

Parameters:

input - The input to digest

Returns:

The hash value for the given input

Throws:

RuntimeException - If we couldn't find any SHA-256 provider

hmacSha512

public static byte[] hmacSha512(byte[] key,
                                byte[] input)

sha256hash160

public static byte[] sha256hash160(byte[] input)