public ActionResult Edit(EncriptarModel encriptarModel)
{
ExercicioCrpito.Models.EncriptarModel encriptar = db.encriptars.Find(encriptarModel.id);
encriptarModel.Texto = encriptar.Texto;
db.Entry(encriptar).State = EntityState.Detached;
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.BlockSize = 128;
aes.KeySize = 256;
aes.IV = Encoding.UTF8.GetBytes(AesIV256BD);
aes.Key = Encoding.UTF8.GetBytes(AesKey256BD);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
byte[] src = Encoding.Unicode.GetBytes(encriptarModel.Texto);
using (ICryptoTransform encrypt = aes.CreateEncryptor())
{
byte[] dest = encrypt.TransformFinalBlock(src, 0, src.Length);
//Converte byte array para string de base 64
encriptarModel.Texto = Convert.ToBase64String(dest);
}
db.Entry(encriptarModel).State = EntityState.Modified;
db.SaveChanges();
return(RedirectToAction("Index"));
}
public ActionResult Create(EncriptarModel encriptarModel)
{
if (ModelState.IsValid)
{
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.BlockSize = 128;
aes.KeySize = 256;
aes.IV = Encoding.UTF8.GetBytes(AesIV256BD);
aes.Key = Encoding.UTF8.GetBytes(AesKey256BD);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
byte[] src = Encoding.Unicode.GetBytes(encriptarModel.Texto);
using (ICryptoTransform encrypt = aes.CreateEncryptor())
{
byte[] dest = encrypt.TransformFinalBlock(src, 0, src.Length);
//Converte byte array para string de base 64
encriptarModel.Texto = Convert.ToBase64String(dest);
}
db.encriptars.Add(encriptarModel);
db.SaveChanges();
return(RedirectToAction(nameof(Index)));
}
return(View(encriptarModel));
}
public ActionResult Edit(int?id)
{
if (id == null)
{
return(new HttpStatusCodeResult(System.Net.HttpStatusCode.BadRequest));
}
EncriptarModel encriptarModel = db.encriptar.Find(id);
if (encriptarModel == null)
{
return(HttpNotFound());
}
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.BlockSize = 128;
aes.KeySize = 256;
aes.IV = Encoding.UTF8.GetBytes(AesIV256BD);
aes.Key = Encoding.UTF8.GetBytes(AesKey256BD);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
//Converter string para um byte array 64bits
byte[] src = Convert.FromBase64String(encriptarModel.Mensagem);
//Decripitar
using (ICryptoTransform decrypt = aes.CreateDecryptor())
{
byte[] dest = decrypt.TransformFinalBlock(src, 0, src.Length);
encriptarModel.Mensagem = Encoding.Unicode.GetString(dest);
}
return(View(encriptarModel));
}
