HashUtil (hutool 5.8.32 API)

java.lang.Object
- cn.hutool.core.util.HashUtil

```
public class HashUtil
extends Object
```
Hash算法大全
推荐使用FNV1算法

Author:

Goodzzp, Looly

Constructor Summary

Constructors
Constructor and Description

HashUtil()

Constructors
Constructor and Description
`HashUtil()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static int`	`additiveHash(String key, int prime)` 加法hash
`static int`	`apHash(String str)` AP算法
`static int`	`bernstein(String key)` Bernstein's hash
`static int`	`bkdrHash(String str)` BKDR算法
`static long[]`	`cityHash128(byte[] data)` CityHash算法128-bit实现
`static long[]`	`cityHash128(byte[] data, Number128 seed)` CityHash算法128-bit实现
`static int`	`cityHash32(byte[] data)` CityHash算法32-bit实现
`static long`	`cityHash64(byte[] data)` CityHash算法64-bit实现
`static long`	`cityHash64(byte[] data, long seed)` CityHash算法64-bit实现，种子1使用默认的CityHash#k2
`static long`	`cityHash64(byte[] data, long seed0, long seed1)` CityHash算法64-bit实现，种子1使用默认的CityHash#k2
`static int`	`dekHash(String str)` DEK算法
`static int`	`djbHash(String str)` DJB算法
`static int`	`elfHash(String str)` ELF算法
`static int`	`fnvHash(byte[] data)` 改进的32位FNV算法1
`static int`	`fnvHash(String data)` 改进的32位FNV算法1
`static long`	`hfHash(String data)` HF Hash算法
`static long`	`hfIpHash(String data)` HFIP Hash算法
`static int`	`identityHashCode(Object obj)` 根据对象的内存地址生成相应的Hash值
`static int`	`intHash(int key)` Thomas Wang的算法，整数hash
`static int`	`javaDefaultHash(String str)` JAVA自己带的算法
`static int`	`jsHash(String str)` JS算法
`static long[]`	`metroHash128(byte[] data)` MetroHash 算法128-bit实现
`static long[]`	`metroHash128(byte[] data, long seed)` MetroHash 算法128-bit实现
`static long`	`metroHash64(byte[] data)` MetroHash 算法64-bit实现
`static long`	`metroHash64(byte[] data, long seed)` MetroHash 算法64-bit实现
`static long`	`mixHash(String str)` 混合hash算法，输出64位的值
`static long[]`	`murmur128(byte[] data)` MurmurHash算法128-bit实现
`static int`	`murmur32(byte[] data)` MurmurHash算法32-bit实现
`static long`	`murmur64(byte[] data)` MurmurHash算法64-bit实现
`static int`	`oneByOneHash(String key)` 一次一个hash
`static int`	`pjwHash(String str)` PJW算法
`static int`	`rotatingHash(String key, int prime)` 旋转hash
`static int`	`rsHash(String str)` RS算法hash
`static int`	`sdbmHash(String str)` SDBM算法
`static long`	`tianlHash(String str)` TianL Hash算法
`static int`	`universal(char[] key, int mask, int[] tab)` Universal Hashing
`static int`	`zobrist(char[] key, int mask, int[][] tab)` Zobrist Hashing

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - HashUtil
```
public HashUtil()
```
- Method Detail
  - additiveHash
```
public static int additiveHash(String key,
                               int prime)
```
    加法hash
    
    Parameters:
    
    key - 字符串
    
    prime - 一个质数
    
    Returns:
    
    hash结果
  - rotatingHash
```
public static int rotatingHash(String key,
                               int prime)
```
    旋转hash
    
    Parameters:
    
    key - 输入字符串
    
    prime - 质数
    
    Returns:
    
    hash值
  - oneByOneHash
```
public static int oneByOneHash(String key)
```
    一次一个hash
    
    Parameters:
    
    key - 输入字符串
    
    Returns:
    
    输出hash值
  - bernstein
```
public static int bernstein(String key)
```
    Bernstein's hash
    
    Parameters:
    
    key - 输入字节数组
    
    Returns:
    
    结果hash
  - universal
```
public static int universal(char[] key,
                            int mask,
                            int[] tab)
```
    Universal Hashing
    
    Parameters:
    
    key - 字节数组
    
    mask - 掩码
    
    tab - tab
    
    Returns:
    
    hash值
  - zobrist
```
public static int zobrist(char[] key,
                          int mask,
                          int[][] tab)
```
    Zobrist Hashing
    
    Parameters:
    
    key - 字节数组
    
    mask - 掩码
    
    tab - tab
    
    Returns:
    
    hash值
  - fnvHash
```
public static int fnvHash(byte[] data)
```
    改进的32位FNV算法1
    
    Parameters:
    
    data - 数组
    
    Returns:
    
    hash结果
  - fnvHash
```
public static int fnvHash(String data)
```
    改进的32位FNV算法1
    
    Parameters:
    
    data - 字符串
    
    Returns:
    
    hash结果
  - intHash
```
public static int intHash(int key)
```
    Thomas Wang的算法，整数hash
    
    Parameters:
    
    key - 整数
    
    Returns:
    
    hash值
  - rsHash
```
public static int rsHash(String str)
```
    RS算法hash
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - jsHash
```
public static int jsHash(String str)
```
    JS算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - pjwHash
```
public static int pjwHash(String str)
```
    PJW算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - elfHash
```
public static int elfHash(String str)
```
    ELF算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - bkdrHash
```
public static int bkdrHash(String str)
```
    BKDR算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - sdbmHash
```
public static int sdbmHash(String str)
```
    SDBM算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - djbHash
```
public static int djbHash(String str)
```
    DJB算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - dekHash
```
public static int dekHash(String str)
```
    DEK算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - apHash
```
public static int apHash(String str)
```
    AP算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - tianlHash
```
public static long tianlHash(String str)
```
    TianL Hash算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    Hash值
  - javaDefaultHash
```
public static int javaDefaultHash(String str)
```
    JAVA自己带的算法
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - mixHash
```
public static long mixHash(String str)
```
    混合hash算法，输出64位的值
    
    Parameters:
    
    str - 字符串
    
    Returns:
    
    hash值
  - identityHashCode
```
public static int identityHashCode(Object obj)
```
    根据对象的内存地址生成相应的Hash值
    
    Parameters:
    
    obj - 对象
    
    Returns:
    
    hash值
    
    Since:
    
    4.2.2
  - murmur32
```
public static int murmur32(byte[] data)
```
    MurmurHash算法32-bit实现
    
    Parameters:
    
    data - 数据
    
    Returns:
    
    hash值
    
    Since:
    
    4.3.3
  - murmur64
```
public static long murmur64(byte[] data)
```
    MurmurHash算法64-bit实现
    
    Parameters:
    
    data - 数据
    
    Returns:
    
    hash值
    
    Since:
    
    4.3.3
  - murmur128
```
public static long[] murmur128(byte[] data)
```
    MurmurHash算法128-bit实现
    
    Parameters:
    
    data - 数据
    
    Returns:
    
    hash值
    
    Since:
    
    4.3.3
  - cityHash32
```
public static int cityHash32(byte[] data)
```
    CityHash算法32-bit实现
    
    Parameters:
    
    data - 数据
    
    Returns:
    
    hash值
    
    Since:
    
    5.2.5
  - cityHash64
```
public static long cityHash64(byte[] data,
                              long seed)
```
    CityHash算法64-bit实现，种子1使用默认的CityHash#k2
    
    Parameters:
    
    data - 数据
    
    seed - 种子2
    
    Returns:
    
    hash值
    
    Since:
    
    5.2.5
  - cityHash64
```
public static long cityHash64(byte[] data,
                              long seed0,
                              long seed1)
```
    CityHash算法64-bit实现，种子1使用默认的CityHash#k2
    
    Parameters:
    
    data - 数据
    
    seed0 - 种子1
    
    seed1 - 种子2
    
    Returns:
    
    hash值
    
    Since:
    
    5.2.5
  - cityHash64
```
public static long cityHash64(byte[] data)
```
    CityHash算法64-bit实现
    
    Parameters:
    
    data - 数据
    
    Returns:
    
    hash值
    
    Since:
    
    5.2.5
  - cityHash128
```
public static long[] cityHash128(byte[] data)
```
    CityHash算法128-bit实现
    
    Parameters:
    
    data - 数据
    
    Returns:
    
    hash值
    
    Since:
    
    5.2.5
  - cityHash128
```
public static long[] cityHash128(byte[] data,
                                 Number128 seed)
```
    CityHash算法128-bit实现
    
    Parameters:
    
    data - 数据
    
    seed - 种子
    
    Returns:
    
    hash值，long[0]：低位，long[1]：高位
    
    Since:
    
    5.2.5
  - metroHash64
```
public static long metroHash64(byte[] data,
                               long seed)
```
    MetroHash 算法64-bit实现
    
    Parameters:
    
    data - 数据
    
    seed - 种子
    
    Returns:
    
    hash值
  - metroHash64
```
public static long metroHash64(byte[] data)
```
    MetroHash 算法64-bit实现
    
    Parameters:
    
    data - 数据
    
    Returns:
    
    hash值
  - metroHash128
```
public static long[] metroHash128(byte[] data,
                                  long seed)
```
    MetroHash 算法128-bit实现
    
    Parameters:
    
    data - 数据
    
    seed - 种子
    
    Returns:
    
    hash值，long[0]：低位，long[1]：高位
  - metroHash128
```
public static long[] metroHash128(byte[] data)
```
    MetroHash 算法128-bit实现
    
    Parameters:
    
    data - 数据
    
    Returns:
    
    hash值，long[0]：低位，long[1]：高位
  - hfHash
```
public static long hfHash(String data)
```
    HF Hash算法
    
    Parameters:
    
    data - 字符串
    
    Returns:
    
    hash结果
    
    Since:
    
    5.8.0
  - hfIpHash
```
public static long hfIpHash(String data)
```
    HFIP Hash算法
    
    Parameters:
    
    data - 字符串
    
    Returns:
    
    hash结果
    
    Since:
    
    5.8.0

Class HashUtil

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

HashUtil

Method Detail

additiveHash

rotatingHash

oneByOneHash

bernstein

universal

zobrist

fnvHash

fnvHash

intHash

rsHash

jsHash

pjwHash

elfHash

bkdrHash

sdbmHash

djbHash

dekHash

apHash

tianlHash

javaDefaultHash

mixHash

identityHashCode

murmur32

murmur64

murmur128

cityHash32

cityHash64

cityHash64

cityHash64

cityHash128

cityHash128

metroHash64

metroHash64

metroHash128

metroHash128

hfHash

hfIpHash