当我在ASP.Net核心中用AES解密时，我丢失了一些数据

Question

我的两个函数：

public static void encrypt(IFormFile uploadFile)
{
    ICryptoTransform transform = _crypt_provider.CreateEncryptor();

    //Extraer los datos del csv en un string
    string text;
    using (var reader = new StreamReader(uploadFile.OpenReadStream()))//, Encoding.UTF8
    {
        // lectura del contenido del archivo
        text = reader.ReadToEnd();
    }

    byte[] encrypted_bytes = transform.TransformFinalBlock(Encoding.UTF8.GetBytes(text) , 0, text.Length);

    string textoEncrypted = Convert.ToBase64String(encrypted_bytes);
    //string textoEncrypted = Encoding.UTF8.GetString(encrypted_bytes);

    Debug.WriteLine($"El texto ingresado = {text} \nEl texto encriptado = {textoEncrypted}");
    File.WriteAllText(uploadFile.FileName, textoEncrypted);
}

public static string decrypt(IFormFile uploadFile)
{
    string text;
    using (var reader = new StreamReader(uploadFile.OpenReadStream()))//, Encoding.GetEncoding("iso-8859-1")
    {
        // lectura del contenido del archivo
        text = reader.ReadToEnd();
    }

    ICryptoTransform transform = _crypt_provider.CreateDecryptor();

    byte[] encrypted_bytes = Convert.FromBase64String(text);
    //byte[] encrypted_bytes = Encoding.UTF8.GetBytes(text);
    byte[] dencrypted_bytes = transform.TransformFinalBlock(encrypted_bytes, 0, encrypted_bytes.Length);
    string textoDesencriptado = Encoding.UTF8.GetString(dencrypted_bytes);
    //File.WriteAllText(uploadFile.FileName, textoDesencriptado);
    Debug.WriteLine($"El texto ingresado = {text} \nEl texto desencriptado = {textoDesencriptado}");
    return textoDesencriptado;
}

这是我的.csv输入：

50001,José,,Peréz,Gonzáles,1998-07-06
50002,Miguel,,Hermandez,Hermandez,1998-07-06
50003,Raúl,,Ramirez,Gutierrez,1998-07-06
50004,Laura2,Araceli,Ordoñez,Alcazar,1998-07-06
50005,Yazmin2,,Herrera,García,1998-07-06
50007,Prb2, Prb,Prb3,Herreras,1998-07-06

和输出：

50001,José,,Peréz,Gonzáles,1998-07-06
50002,Miguel,,Hermandez,Hermandez,1998-07-06
50003,Raúl,,Ramirez,Gutierrez,1998-07-06
50004,Laura2,Araceli,Ordoñez,Alcazar,1998-07-06
50005,Yazmin2,,Herrera,García,1998-07-06
50007,Prb2, Prb,Prb3,Herreras,1998

失踪-07-06在50007.

我使用UTF-8是因为我需要加密特殊字符。

Answer 1

一般来说，如果解密失败，你就什么也看不见。因此，错误必须在读取/加密。将文本上的这一行更改为加密--不是给出text.Length，而是给出数组长度。

byte[] toEncryptArray = ASCIIEncoding.BigEndianUnicode.GetBytes(toEncrypt);


byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);