利用Rijndael算法解密时"base-64字符数组的无效长度" 怎么解决

Question

利用Rijndael算法加密后再进行解密的话就会报错 错误信息为："base-64字符数组的无效长度" 大家谁能告诉我怎么解决哦？

Answer 1

确定 Key 与 IV 都对得上不；确定解密的数据无误不？

Answer 2

把 Key， IV， 明文贴上来看看？ 应该没有问题的， 我也经常使用 RijndaelManager 加密只有一位的数据

Answer 3

您好，昨晚突然断网了，您看看 谢谢咯static Rijndael()
    {
        mobjCryptoService = new RijndaelManaged();
        Key = "Guz(%&hj7x89H$yuBI0456FtmaT5&fvHUFCy76*h%(HilJ$lhj!y6&(*jkP87jH7";
    }
    public static byte[] GetLegalKey()
    {
        string sTemp = Key;
        mobjCryptoService.GenerateKey();
        byte[] bytTemp = mobjCryptoService.Key;
        int KeyLength = bytTemp.Length;
        if (sTemp.Length > KeyLength)
            sTemp = sTemp.Substring(0, KeyLength);
        else if (sTemp.Length < KeyLength)
            sTemp = sTemp.PadRight(KeyLength, ' ');
        return ASCIIEncoding.ASCII.GetBytes(sTemp);
    }
    /// <summary>
    /// 获得初始向量IV
    /// </summary>
    /// <returns>初试向量IV</returns>
    public static byte[] GetLegalIV()
    {
        string sTemp = "E4ghj*Ghg7!rNIfb&95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7&!hg4ui%$hjk";
        mobjCryptoService.GenerateIV();
        byte[] bytTemp = mobjCryptoService.IV;
        int IVLength = bytTemp.Length;
        if (sTemp.Length > IVLength)
            sTemp = sTemp.Substring(0, IVLength);
        else if (sTemp.Length < IVLength)
            sTemp = sTemp.PadRight(IVLength, ' ');
        return ASCIIEncoding.ASCII.GetBytes(sTemp);
    }

Answer 4

用你的代码试了试， 没有问题啊....
        private static string Key = "Guz(%&hj7x89H$yuBI0456FtmaT5&fvHUFCy76*h%(HilJ$lhj!y6&(*jkP87jH7";
        private static RijndaelManaged mobjCryptoService = new RijndaelManaged();        public static byte[] GetLegalKey()
        {
            string sTemp = Key;
            mobjCryptoService.GenerateKey();
            byte[] bytTemp = mobjCryptoService.Key;
            int KeyLength = bytTemp.Length;
            if (sTemp.Length > KeyLength)
                sTemp = sTemp.Substring(0, KeyLength);
            else if (sTemp.Length < KeyLength)
                sTemp = sTemp.PadRight(KeyLength, ' ');
            return ASCIIEncoding.ASCII.GetBytes(sTemp);
        }
        /// <summary> 
        /// 获得初始向量IV 
        /// </summary> 
        /// <returns>初试向量IV </returns> 
        public static byte[] GetLegalIV()
        {
            string sTemp = "E4ghj*Ghg7!rNIfb&95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7&!hg4ui%$hjk";
            mobjCryptoService.GenerateIV();
            byte[] bytTemp = mobjCryptoService.IV;
            int IVLength = bytTemp.Length;
            if (sTemp.Length > IVLength)
                sTemp = sTemp.Substring(0, IVLength);
            else if (sTemp.Length < IVLength)
                sTemp = sTemp.PadRight(IVLength, ' ');
            return ASCIIEncoding.ASCII.GetBytes(sTemp);
        }        static void Main(string[] args)
        {
            // 随机的测试数据
            byte[] testBuff = new byte[1];
            Random r = new Random();
            r.NextBytes(testBuff);            // 加密
            RijndaelManaged encryptor = new RijndaelManaged();
            ICryptoTransform encryptForm = encryptor.CreateEncryptor(GetLegalKey(), GetLegalIV());            MemoryStream msE = new MemoryStream();
            CryptoStream csE = new CryptoStream(msE, encryptForm, CryptoStreamMode.Write);            csE.Write(testBuff, 0, testBuff.Length);
            csE.FlushFinalBlock();            // 密文
            byte[] encryptedBuff = msE.ToArray();            // 解密
            RijndaelManaged decryptor = new RijndaelManaged();
            ICryptoTransform decryptFrom = decryptor.CreateDecryptor(GetLegalKey(), GetLegalIV());            Byte[] decryptedBuff = new Byte[encryptedBuff.Length];            MemoryStream msD = new MemoryStream();
            msD.Write(encryptedBuff, 0, encryptedBuff.Length);
            msD.Seek(0, SeekOrigin.Begin);
            CryptoStream ds = new CryptoStream(msD, decryptFrom, CryptoStreamMode.Read);            ds.Read(decryptedBuff, 0, decryptedBuff.Length);            Console.WriteLine(string.Format("testBuff: {0}; decryptedBuff: {1}",
                BitConverter.ToString(testBuff), BitConverter.ToString(decryptedBuff)));            Console.Read();
        }

Answer 5

Rijndael算法也会出现这种问题吗？我现在用的就是这个，不过用des算法的时候出现的问题现在就不出现了！