57 lines
2.1 KiB
C#
57 lines
2.1 KiB
C#
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using System.IO;
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using System.Text;
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using System.Security.Cryptography;
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using UnityEngine;
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namespace Comgreate
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{
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public class AESForFileKit
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{
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private static readonly byte[] Salt = Encoding.UTF8.GetBytes("Sgfsads");
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private const int Iterations = 1000;
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public static void EncryptFile(string inputPath, string outputPath, string password)
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{
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var passwordBytes = Encoding.UTF8.GetBytes(password);
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var inputStream = new FileStream(inputPath, FileMode.Open, FileAccess.Read);
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var outputStream = new FileStream(outputPath, FileMode.Create, FileAccess.Write);
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using var aes = new AesManaged();
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var key = new Rfc2898DeriveBytes(passwordBytes, Salt, Iterations);
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aes.Key = key.GetBytes(aes.KeySize / 8);
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aes.IV = key.GetBytes(aes.BlockSize / 8);
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using var cryptoStream = new CryptoStream(outputStream, aes.CreateEncryptor(), CryptoStreamMode.Write);
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inputStream.CopyTo(cryptoStream);
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cryptoStream.FlushFinalBlock();
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cryptoStream.Close();
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outputStream.Close();
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inputStream.Close();
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}
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public static byte[] DecryptToBytes(string inputPath, string password, out int dataSize)
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{
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var passwordBytes = Encoding.UTF8.GetBytes(password);
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var inputStream = new FileStream(inputPath, FileMode.Open, FileAccess.Read);
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var outputMemoryStream = new MemoryStream();
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using (var aes = new AesManaged())
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{
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var key = new Rfc2898DeriveBytes(passwordBytes, Salt, Iterations);
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aes.Key = key.GetBytes(aes.KeySize / 8);
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aes.IV = key.GetBytes(aes.BlockSize / 8);
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using (var cryptoStream = new CryptoStream(inputStream, aes.CreateDecryptor(), CryptoStreamMode.Read))
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{
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cryptoStream.CopyTo(outputMemoryStream);
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}
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}
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var outputBytes = outputMemoryStream.ToArray();
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dataSize = outputBytes.Length;
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return outputBytes;
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}
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}
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}
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