70 lines
2.4 KiB
C#
70 lines
2.4 KiB
C#
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Security.Cryptography;
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using System.Text;
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using UnityEngine;
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namespace SDK.Utils
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{
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public static class EncryptionUtils
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{
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private static string GetKey(string packageName)
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{
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var keyBytes = Encoding.UTF8.GetBytes(packageName);
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byte[] keyHash;
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using (var md5 = MD5.Create())
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{
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keyHash = md5.ComputeHash(keyBytes);
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}
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return BitConverter.ToString(keyHash).Replace("-", "").ToUpper();
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}
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// Aes 加密
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public static string AesEncrypt(string packageName, string content)
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{
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string key = GetKey(packageName);
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var contentBytes = Encoding.UTF8.GetBytes(content);
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var keyBytes = Encoding.UTF8.GetBytes(key);
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byte[] keyHash;
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using (var md5 = MD5.Create())
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{
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keyHash = md5.ComputeHash(keyBytes);
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}
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using var aesAlg = Aes.Create();
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aesAlg.Key = keyHash;
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aesAlg.Mode = CipherMode.ECB;
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aesAlg.Padding = PaddingMode.PKCS7;
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var encryptor = aesAlg.CreateEncryptor();
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var encryptedBytes = encryptor.TransformFinalBlock(contentBytes, 0, contentBytes.Length);
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return BitConverter.ToString(encryptedBytes).Replace("-", "").ToLower();
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}
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// Aes 解密
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public static string AesDecrypt(string packageName, string encrypted)
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{
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string key = GetKey(packageName);
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var keyBytes = Encoding.UTF8.GetBytes(key);
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var encryptedBytes = new byte[encrypted.Length / 2];
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for (var i = 0; i < encryptedBytes.Length; i++)
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{
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encryptedBytes[i] = Convert.ToByte(encrypted.Substring(i * 2, 2), 16);
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}
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// 使用传统的MD5创建方式
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byte[] keyHash;
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using (var md5 = MD5.Create())
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{
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keyHash = md5.ComputeHash(keyBytes);
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}
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using var aesAlg = Aes.Create();
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aesAlg.Key = keyHash;
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aesAlg.Mode = CipherMode.ECB;
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aesAlg.Padding = PaddingMode.PKCS7;
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var decryptor = aesAlg.CreateDecryptor();
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var decryptedBytes = decryptor.TransformFinalBlock(encryptedBytes, 0, encryptedBytes.Length);
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return Encoding.UTF8.GetString(decryptedBytes);
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}
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}
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}
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