public async Task <ActionResult> Cipher(IFormFile file, IFormFile key, string name)
{
try
{
string basePath = _env.ContentRootPath;
string TempFile = basePath + @"\Temp\temp.txt";
string TempFile2 = basePath + @"\Temp\temp_key.txt";
RSAkey Key = new RSAkey();
byte[] FileBytes;
if (key.FileName.Substring(key.FileName.Length - 3, 3) != "key")
{
return(StatusCode(500));
}
using (FileStream fs = System.IO.File.Create(TempFile2))
{
await key.CopyToAsync(fs);
}
using (StreamReader reader = new StreamReader(TempFile2))
{
string base_string = reader.ReadToEnd();
string[] Key_Attributes = base_string.Split("|");
Key.modulus = BigInteger.Parse(Key_Attributes[0]);
Key.power = BigInteger.Parse(Key_Attributes[1]);
}
using (FileStream fs = System.IO.File.Create(TempFile))
{
await file.CopyToAsync(fs);
}
RSA Cipher = new RSA();
if (file.FileName.Substring(file.FileName.Length - 3, 3) == "rsa")
{
if (Cipher.Decipher(TempFile, out FileBytes, Key) == false)
{
return(StatusCode(500));
}
return(File(FileBytes, "text/plain", name + ".txt"));
}
else
{
if (Cipher.Cipher(TempFile, out FileBytes, Key) == false)
{
return(StatusCode(500));
}
return(File(FileBytes, "text/plain", name + ".rsa"));
}
}
catch (Exception)
{
return(StatusCode(500));
}
}