com.arxanfintech.common.util

类 HashUtil

java.lang.Object

com.arxanfintech.common.util.HashUtil

public class HashUtil
extends java.lang.Object

字段概要

字段

限定符和类型	字段和说明
static byte[]	EMPTY_DATA_HASH
static byte[]	EMPTY_LIST_HASH
static byte[]	EMPTY_TRIE_HASH

构造器概要

构造器

构造器和说明
HashUtil()

方法概要

限定符和类型	方法和说明
static byte[]	calcNewAddr(byte[] addr, byte[] nonce) The way to calculate new address
static byte[]	doubleDigest(byte[] input)
static byte[]	doubleDigest(byte[] input, int offset, int length) Calculates the SHA-256 hash of the given byte range, and then hashes the resulting hash again.
static byte[]	randomHash()
static byte[]	randomPeerId()
static byte[]	ripemd160(byte[] data)
static byte[]	sha256(byte[] input)
static byte[]	sha3(byte[] input)
static byte[]	sha3(byte[] input1, byte[] input2)
static byte[]	sha3(byte[] input, int start, int length) hashing chunk of the data
static byte[]	sha3omit12(byte[] input) Calculates RIGTMOST160(SHA3(input)).
static byte[]	sha512(byte[] input)
static java.lang.String	shortHash(byte[] hash)

从类继承的方法 java.lang.Object

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

字段详细资料

EMPTY_DATA_HASH

public static final byte[] EMPTY_DATA_HASH

EMPTY_LIST_HASH

public static final byte[] EMPTY_LIST_HASH

EMPTY_TRIE_HASH

public static final byte[] EMPTY_TRIE_HASH

构造器详细资料

HashUtil

public HashUtil()

方法详细资料

sha256

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

参数:

input - - data for hashing

返回:

- sha256 hash of the data

sha3

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

sha3

public static byte[] sha3(byte[] input1,
                          byte[] input2)

sha3

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

hashing chunk of the data

参数:

input - - data for hash

start - - start of hashing chunk

length - - length of hashing chunk

返回:

- keccak hash of the chunk

sha512

public static byte[] sha512(byte[] input)

ripemd160

public static byte[] ripemd160(byte[] data)

参数:

data - - message to hash

返回:

- reipmd160 hash of the message

sha3omit12

public static byte[] sha3omit12(byte[] input)

Calculates RIGTMOST160(SHA3(input)). This is used in address calculations. *

参数:

input - - data

返回:

- 20 right bytes of the hash keccak of the data

calcNewAddr

public static byte[] calcNewAddr(byte[] addr,
                                 byte[] nonce)

The way to calculate new address

参数:

addr - - creating addres

nonce - - nonce of creating address

返回:

new address

doubleDigest

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

参数:

input - -

返回:

-

另请参阅:

doubleDigest(byte[], int, int)

doubleDigest

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

Calculates the SHA-256 hash of the given byte range, and then hashes the resulting hash again. This is standard procedure in Bitcoin. The resulting hash is in big endian form.

参数:

input - -

offset - -

length - -

返回:

-

randomPeerId

public static byte[] randomPeerId()

返回:

generates random peer id for the HelloMessage

randomHash

public static byte[] randomHash()

返回:

- generate random 32 byte hash

shortHash

public static java.lang.String shortHash(byte[] hash)