org.bitcoin.x6763.crypto.digest
Class Hash256

java.lang.Object
  org.bitcoin.x6763.crypto.digest.Hash256

public class Hash256
extends java.lang.Object

The Hash256 class provides methods for hashing data with SHA-256 twice.

There are two ways this class can be used. The first way is to use the static hash method, which will internally instantiate the SHA256 on each call:

 byte[] data = new String("abc").getBytes();
 byte[] hash = Hash256.hash(data);
 
 

The second way is to instantiate a Hash256 object and use the hashBytes instance method. The Hash256 object will then reuse the same SHA256 instance for each call to hashBytes:

 Hash256 hash256 = new Hash160();
 
 byte[] data1 = new String("def").getBytes();
 byte[] hash1 = hash256.hashBytes(data1);
 
 byte[] data2 = new String("ghi").getBytes();
 byte[] hash2 = hash256.hashBytes(data2);
 
 

Author:

x6763

Constructor Summary

Hash256()
Creates a Hash256 digest instance.

Method Summary

static byte[]	hash(byte[] data) Hashes an array of bytes with the SHA-256 algorithm twice.
byte[]	hashBytes(byte[] data) Hashes an array of bytes with the SHA-256 algorithm twice.

Methods inherited from class java.lang.Object

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

Constructor Detail

Hash256

public Hash256()

Creates a Hash256 digest instance.

Method Detail

hash

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

Hashes an array of bytes with the SHA-256 algorithm twice.

Parameters:

data - the array of bytes to hash

Returns:

the array of bytes for the resulting hash value

hashBytes

public byte[] hashBytes(byte[] data)

Hashes an array of bytes with the SHA-256 algorithm twice.

Parameters:

data - the array of bytes to hash

Returns:

the array of bytes for the resulting hash value