Cript.cs

using System.IO;
using System.Security.Cryptography;
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
 
    public class Crypt
    {
 
        private const string AesIV = @"jCddaOybW3zEh0Kl";
        private const string AesKey = @"giVJrbHRlWBDIggF";
 
        public static string Encrypt(string text)
        {
 
            RijndaelManaged aes = new RijndaelManaged();
            aes.BlockSize = 128;
            aes.KeySize = 128;
            aes.Padding = PaddingMode.Zeros;
            aes.Mode = CipherMode.CBC;
            aes.Key = System.Text.Encoding.UTF8.GetBytes(AesKey);
            aes.IV = System.Text.Encoding.UTF8.GetBytes(AesIV);
 
            ICryptoTransform encrypt = aes.CreateEncryptor();
            MemoryStream memoryStream = new MemoryStream();
            CryptoStream cryptStream = new CryptoStream(memoryStream, encrypt, CryptoStreamMode.Write);
 
            byte[] text_bytes = System.Text.Encoding.UTF8.GetBytes(text);
 
            cryptStream.Write(text_bytes, 0, text_bytes.Length);
            cryptStream.FlushFinalBlock();
 
            byte[] encrypted = memoryStream.ToArray();
 
            return (System.Convert.ToBase64String(encrypted));
        }
 
        public static string Decrypt(string cryptText)
        {
        Debug.Log ("暗号化解除します。");
            RijndaelManaged aes = new RijndaelManaged();
            aes.BlockSize = 128;
            aes.KeySize = 128;
            aes.Padding = PaddingMode.Zeros;
            aes.Mode = CipherMode.CBC;
            aes.Key = System.Text.Encoding.UTF8.GetBytes(AesKey);
            aes.IV = System.Text.Encoding.UTF8.GetBytes(AesIV);
 
            ICryptoTransform decryptor = aes.CreateDecryptor();
 
            byte[] encrypted = System.Convert.FromBase64String(cryptText);
            byte[] planeText = new byte[encrypted.Length];
 
            MemoryStream memoryStream = new MemoryStream(encrypted);
            CryptoStream cryptStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read);
 
            cryptStream.Read(planeText, 0, planeText.Length);
 
            return (System.Text.Encoding.UTF8.GetString(planeText));
        }
    }