generated from mingliqiye/lib-tem
minglipro
7526b2e787
- 从 Java 文件中删除了旧的 DateTime 类 - 新增 Kotlin 版本的 DateTime 类，具有以下改进： - 添加了时间格式化枚举类 Formatter - 新增时间位移类 DateTimeOffset - 重构了 parse 和 format 方法，支持新的 Formatter 枚举 - 优化了文件时间转换方法，使用纳秒精度 - 删除了旧的 DateTimeJsonConverter 类
108 lines
3.2 KiB
Kotlin
108 lines
3.2 KiB
Kotlin
/*
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* Copyright 2025 mingliqiye
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* ProjectName mingli-utils
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* ModuleName mingli-utils.main
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* CurrentFile HashUtils.kt
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* LastUpdate 2025-09-15 09:38:04
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* UpdateUser MingLiPro
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*/
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@file:JvmName("HashUtils")
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package com.mingliqiye.utils.hash
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import org.bouncycastle.jce.provider.BouncyCastleProvider
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import org.mindrot.jbcrypt.BCrypt
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import java.io.File
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import java.io.FileInputStream
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import java.io.IOException
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import java.security.MessageDigest
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import java.security.NoSuchAlgorithmException
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import java.security.Security
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private val _addProvider = run {
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Security.addProvider(BouncyCastleProvider())
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}
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/**
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* 计算指定文件的哈希值。
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*
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* @param file 要计算哈希值的文件对象
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* @param algorithm 使用的哈希算法名称（如 SHA-256、MD5 等）
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* @return 文件的十六进制格式哈希值字符串
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* @throws IOException 当文件不存在或读取过程中发生 I/O 错误时抛出
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* @throws NoSuchAlgorithmException 当指定的哈希算法不可用时抛出
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*/
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@Throws(IOException::class, NoSuchAlgorithmException::class)
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fun calculateFileHash(file: File, algorithm: String): String {
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// 检查文件是否存在
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if (!file.exists()) {
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throw IOException("File not found: " + file.absolutePath)
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}
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val digest = MessageDigest.getInstance(algorithm)
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FileInputStream(file).use { fis ->
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val buffer = ByteArray(8192)
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var bytesRead: Int
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// 分块读取文件内容并更新摘要
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while (fis.read(buffer).also { bytesRead = it } != -1) {
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digest.update(buffer, 0, bytesRead)
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}
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}
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return bytesToHex(digest.digest())
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}
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/**
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* 将字节数组转换为十六进制字符串表示。
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*
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* @param bytes 输入的字节数组
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* @return 对应的十六进制字符串
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*/
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private fun bytesToHex(bytes: ByteArray): String {
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val hexString = StringBuilder(2 * bytes.size)
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for (b in bytes) {
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val hex = Integer.toHexString(0xff and b.toInt())
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if (hex.length == 1) {
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hexString.append('0')
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}
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hexString.append(hex)
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}
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return hexString.toString()
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}
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/**
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* 使用 BCrypt 算法对字符串进行加密。
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*
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* @param string 需要加密的明文字符串
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* @return 加密后的 BCrypt 哈希字符串
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*/
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fun bcrypt(string: String): String {
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return BCrypt.hashpw(string, BCrypt.gensalt())
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}
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/**
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* 验证给定字符串与 BCrypt 哈希是否匹配。
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*
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* @param string 明文字符串
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* @param bcrypted 已经使用 BCrypt 加密的哈希字符串
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* @return 如果匹配返回 true，否则返回 false
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*/
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fun checkBcrypt(string: String, bcrypted: String): Boolean {
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return BCrypt.checkpw(string, bcrypted)
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}
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