public IActionResult Cifrarllaves([FromRoute] string nombre, [FromForm] IFormFile file, [FromForm] IFormFile filellave)
{
using var fileRead = file.OpenReadStream();
using var fileReadllave = filellave.OpenReadStream();
try
{
RSA prueba = new RSA();
using var fileWrite = new FileStream(nombre + ".txt", FileMode.OpenOrCreate);
var writer = new BinaryWriter(fileWrite);
StreamReader leer = new StreamReader(fileReadllave);
int n = Convert.ToInt32(leer.ReadLine());
int eod = Convert.ToInt32(leer.ReadLine());
if (filellave.FileName.Contains("public.key"))
{
using var reader = new BinaryReader(fileRead);
var buffer = new byte[2000];
List <byte[]> bytelist = new List <byte[]>();
int size = 0;
while (fileRead.Position < fileRead.Length)
{
buffer = reader.ReadBytes(2000);
foreach (var value in buffer)
{
//writer.Write(prueba.Manualbytetoint(prueba.CipherAndDecipher(value, eod, n)));
byte[] valor = prueba.CipherAndDecipher((int)value, eod, n);
bytelist.Add(valor);
if (valor.Length > size)
{
size = valor.Length;
}
}
}
writer.Write(size);
foreach (var number in bytelist)
{
int correccion = size - number.Length;
writer.Write(number);
while (correccion != 0)
{
writer.Write(BigInteger.Zero.ToByteArray());
correccion--;
}
}
}
if (filellave.FileName.Contains("private.key"))
{
using var reader = new BinaryReader(fileRead);
int size = BitConverter.ToInt32(reader.ReadBytes(4));
var buffer = new byte[1000 * size];
while (fileRead.Position < fileRead.Length)
{
byte[] number = reader.ReadBytes(size);
int deciphered = prueba.Manualbytetoint(number);
byte[] final = prueba.CipherAndDecipher(deciphered, eod, n);
writer.Write(final);
}
}
writer.Close();
leer.Close();
fileWrite.Close();
var files = System.IO.File.OpenRead(nombre + ".txt");
return(new FileStreamResult(files, "application/txt")
{
FileDownloadName = nombre + ".txt"
});
}
catch (Exception ex)
{
return(BadRequest(ex.Message));
}
}