Estoy tratando de cifrar y descifrar con las siguientes funciones, sin embargo, da como resultado un error de relleno incorrecto.

Si pongoPaddingMode aNone devuelve algunos caracteres alfabéticos y símbolos aleatorios en Log.

Posiblemente me falta algo al configurar la estructura correcta, que es la siguiente:

Cipher Rijndael (AES)Tamaño de bloque 128 bits (16 bytes)Clave de modo CBC (cadena de bloques de cifrado)Frase de contraseña hash MD5IV Igual que la llaveCarácter Base64 de codificación de datosCodificación UTF-8

¡Cualquier ayuda para solucionar este error y cualquier ayuda para garantizar que se cumpla la estructura anterior sería muy apreciada! Gracias

Error

CryptographicException: Bad PKCS7 padding. Invalid length 106.
Mono.Security.Cryptography.SymmetricTransform.ThrowBadPaddingException (PaddingMode padding, Int32 length, Int32 position) (at /Users/builduser/buildslave/monoAndRuntimeClassLibs/build/mcs/class/corlib/Mono.Security.Cryptography/SymmetricTransform.cs:363)
Mono.Security.Cryptography.SymmetricTransform.FinalDecrypt (System.Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount) (at /Users/builduser/buildslave/monoAndRuntimeClassLibs/build/mcs/class/corlib/Mono.Security.Cryptography/SymmetricTransform.cs:515)
Mono.Security.Cryptography.SymmetricTransform.TransformFinalBlock (System.Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount) (at /Users/builduser/buildslave/monoAndRuntimeClassLibs/build/mcs/class/corlib/Mono.Security.Cryptography/SymmetricTransform.cs:554)
System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock (System.Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount) (at /Users/builduser/buildslave/monoAndRuntimeClassLibs/build/mcs/class/corlib/System.Security.Cryptography/RijndaelManagedTransform.cs:94)
APIConnector.Decrypt (System.String toDecrypt) (at Assets/APIConnector.cs:85)

Mi código

using UnityEngine;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;
using System.Xml;
using System.IO;

public class APIConnector : MonoBehaviour {

    // Use this for initialization
    void Start () {

        Debug.Log ("Starting API connector");


    }

    // Update is called once per frame
    void Update () {



    }

    static string data;
    string firstName="";
    string password="";

    void OnGUI() {

        firstName = GUILayout.TextField (firstName, GUILayout.Width(300));
        password = GUILayout.TextField (password, GUILayout.Width(300));

        if (GUILayout.Button ("Submit"))
                        submit ();

    }

    //Our functions

    void submit(){

        Debug.Log ("Name is: " + firstName + " encrypted is: " + Encrypt(firstName));
        Debug.Log ("Name is: " + firstName + " decrypted is: " + Decrypt(firstName));

    }


            public static string Encrypt (string toEncrypt)
            {
        byte[] keyArray = UTF8Encoding.UTF8.GetBytes ("SecretPassphrase");
                // 256-AES key
        int numBytes = System.Text.Encoding.UTF8.GetBytes(toEncrypt).Length;
        Debug.Log ("Bytes: " + numBytes);
                byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes (toEncrypt);
                RijndaelManaged rDel = new RijndaelManaged ();
                rDel.Key = keyArray;
                rDel.BlockSize = 128;
                rDel.Mode = CipherMode.CBC;
                // http://msdn.microsoft.com/en-us/library/system.security.cryptography.ciphermode.aspx
                rDel.Padding = PaddingMode.PKCS7;
                // better lang support
                ICryptoTransform cTransform = rDel.CreateEncryptor ();
                byte[] resultArray = cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);
                return Convert.ToBase64String (resultArray, 0, resultArray.Length);
            }

            public static string Decrypt (string toDecrypt)
            {
        byte[] keyArray = UTF8Encoding.UTF8.GetBytes ("SecretPassphrase");
                // AES-256 key
        byte[] encryptedData = System.Convert.FromBase64String(toDecrypt);
                //byte[] toEncryptArray = Convert.FromBase64String (toDecrypt);
                RijndaelManaged rDel = new RijndaelManaged ();
                rDel.Key = keyArray;
                rDel.BlockSize = 128;
                rDel.Mode = CipherMode.CBC;
                rDel.IV = rDel.Key;
                // http://msdn.microsoft.com/en-us/library/system.security.cryptography.ciphermode.aspx
                rDel.Padding = PaddingMode.PKCS7;
                // better lang support
                ICryptoTransform cTransform = rDel.CreateDecryptor ();
        byte[] resultArray = cTransform.TransformFinalBlock (encryptedData, 0, encryptedData.Length);
                return UTF8Encoding.UTF8.GetString (resultArray);
            }


}