Class Adler32HashFunction

java.lang.Object

cloud.opencode.base.hash.function.AbstractHashFunction

cloud.opencode.base.hash.function.Adler32HashFunction

All Implemented Interfaces:

HashFunction

public final class Adler32HashFunction
extends AbstractHashFunction

Adler-32 hash function implementation Adler-32 哈希函数实现

Wraps Adler32 to provide a 32-bit checksum hash function. Adler-32 is faster than CRC32 but slightly less reliable for error detection.

封装 Adler32，提供32位校验和哈希函数。 Adler-32 比 CRC32 更快，但在错误检测方面稍微不太可靠。

Features | 主要功能:

• 32-bit checksum output - 32位校验和输出
• Fast computation - 快速计算
• Streaming hash via Hasher - 通过Hasher的流式哈希

Usage Examples | 使用示例:

HashCode hash = Adler32HashFunction.adler32().hashBytes(data);
int checksum = hash.asInt();

// Streaming via Hasher
Hasher hasher = Adler32HashFunction.adler32().newHasher();
hasher.putUtf8("Hello").putInt(42);
HashCode streamHash = hasher.hash();

Security | 安全性:

• Thread-safe: Yes - 线程安全: 是
• Not for cryptographic use - 不用于加密用途

Performance | 性能特性:

• Time complexity: O(n) where n = input size - O(n), n为输入大小
• Space complexity: O(1) - O(1)

Since:

JDK 25, opencode-base-hash V1.0.3

Author:

Leon Soo www.LeonSoo.com

See Also:

• OpenCode.cloud

Nested Class Summary

Nested classes/interfaces inherited from class AbstractHashFunction

AbstractHashFunction.AbstractHasher, AbstractHashFunction.BufferedHasher

Field Summary

Fields inherited from class AbstractHashFunction

bits, name

Method Summary

Modifier and Type	Method	Description
static Adler32HashFunction	adler32()	Creates an Adler-32 hash function 创建 Adler-32 哈希函数
HashCode	hashBytes(byte[] input, int offset, int length)	Computes hash of a byte array portion 计算字节数组部分的哈希
Hasher	newHasher()	Creates a new Hasher instance for streaming hash computation 创建新的Hasher实例用于流式哈希计算

Methods inherited from class AbstractHashFunction

bits, hashBytes, hashInt, hashLong, hashObject, name, newHasher, toString

Methods inherited from class Object

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

Methods inherited from interface HashFunction

hashFile, hashInputStream, hashString, hashUtf8

Method Details

adler32

public static Adler32HashFunction adler32()

Creates an Adler-32 hash function 创建 Adler-32 哈希函数

Returns:

Adler-32 hash function | Adler-32 哈希函数

newHasher

public Hasher newHasher()

Description copied from interface: HashFunction

Creates a new Hasher instance for streaming hash computation 创建新的Hasher实例用于流式哈希计算

Returns:

a new Hasher (stateful, not thread-safe) | 新的Hasher（有状态，非线程安全）

hashBytes

public HashCode hashBytes(byte[] input,
 int offset,
 int length)

Description copied from interface: HashFunction

Computes hash of a byte array portion 计算字节数组部分的哈希

Parameters:

input - input bytes | 输入字节

offset - starting offset | 起始偏移

length - number of bytes to hash | 要哈希的字节数

Returns:

hash code | 哈希码