Hash (nanoeth 0.0.1 API)

java.lang.Object

com.norswap.nanoeth.data.Hash

All Implemented Interfaces:: RLPLayoutable

Direct Known Subclasses:: MerkleRoot

@Wrapper
public class Hash
extends Object
implements RLPLayoutable

Represents a 256-bit (32 bytes) Keccak hash.

See Also:: Hashing

Field Summary

Fields
Modifier and Type	Field	Description
`byte[]`	`bytes`	The bytes making up the hash.
`static Hash`	`EMPTY_SEQ_HASH`	Hash of the empty RLP sequence.
`static Hash`	`ZERO`	A hash composed of only zero bytes.

Constructor Summary

Constructors

Constructor Description

Hash(byte[] bytes)

Hash(String hexString)
Creates a hash from a hex string (e.g.

Method Summary

Modifier and Type	Method	Description
`boolean`	`equals(Object o)`
`int`	`hashCode()`
`static Hash`	`parse(RLP rlp)`
`RLP`	`rlpLayout()`	Returns the RLP layout for the object.
`String`	`toFullHexString()`	The hex-string representation of this hash, including leading 0 if any, as per `ByteUtils.toFullHexString(byte[])`.
`String`	`toString()`

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.norswap.nanoeth.rlp.RLPLayoutable

rlpEncode, rlpHexString

Field Details
- ZERO
  
  public static final Hash ZERO
  
  A hash composed of only zero bytes.
- EMPTY_SEQ_HASH
  
  public static final Hash EMPTY_SEQ_HASH
  
  Hash of the empty RLP sequence.
  Can notably be compared against the uncle hash of a block header to see if the block has any uncles.
- bytes
  
  public final byte[] bytes
  
  The bytes making up the hash.
Constructor Details
- Hash
  
  public Hash(@Retained byte[] bytes)
- Hash
  
  public Hash(String hexString)
  
  Creates a hash from a hex string (e.g. 0x123).
  If the post-0x part of the hex string is not 64 characters long, the hash will be padded with zeroes at the start so that it is 32 bytes long.
Method Details
- parse
  
  public static Hash parse(RLP rlp) throws RLPParsingException
  
  Throws:
  
  RLPParsingException
- toFullHexString
  
  public String toFullHexString()
  
  The hex-string representation of this hash, including leading 0 if any, as per ByteUtils.toFullHexString(byte[]).
- rlpLayout
  
  public RLP rlpLayout()
  
  Description copied from interface: RLPLayoutable
  
  Returns the RLP layout for the object.
  
  Specified by:
  
  rlpLayout in interface RLPLayoutable
- equals
  
  public boolean equals(Object o)
  
  Overrides:
  
  equals in class Object
- hashCode
  
  public int hashCode()
  
  Overrides:
  
  hashCode in class Object
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object