private void encryptFile(Object key)
{
try
{
string filePath = txtFileToEncrypt.Text;
FileStream f = new FileStream(filePath, FileMode.Open);
// Encrypt file
fileCrypto fc = new fileCrypto();
Byte[] bytFile = new Byte[f.Length];
f.Read(bytFile, 0, bytFile.Length);
byte[] cipherBytes = fc.encrypt(bytFile, key.ToString(), 128);
// Create the encrypted file
FileStream outStream = File.Create(filePath + ".crypted");
outStream.Write(cipherBytes, 0, cipherBytes.Length);
outStream.Close();
f.Close();
MessageBox.Show("Done!", "File Encryption", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (Exception ex)
{
MessageBox.Show("An error occurred during the file encryption.", "Oups!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
private void decryptFile(Object key)
{
try
{
string filePath = txtFileToDecrypt.Text;
FileStream f = new FileStream(filePath, FileMode.Open);
// Encrypt file
fileCrypto fc = new fileCrypto();
Byte[] bytFile = new Byte[f.Length];
f.Read(bytFile, 0, bytFile.Length);
byte[] clearBytes = fc.decrypt(bytFile, key.ToString(), 128);
// Create the encrypted file
string newFilePath = filePath.Replace(".crypted", "");
string ext = Path.GetExtension(newFilePath);
FileStream outStream = File.Create(newFilePath.Replace(ext, ".decrypted" + ext));
outStream.Write(clearBytes, 0, clearBytes.Length);
outStream.Close();
f.Close();
MessageBox.Show("Done!", "File Decryption", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (Exception ex){
MessageBox.Show("An error occurred during the file decryption. Please, be sure to have the right key.", "Oups!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}