private void UIActionSymEncrypt_Click(object sender, EventArgs e)
{
string fileContent = FileManager.ReadTextFile(pathToFile);
string fullPath = FileManager.RootPath + "tajni_kljuc.txt";
string[] aes = FileManager.ReadTextFile(fullPath).Split(' ');
byte[] key = Convert.FromBase64String(aes[0]);
byte[] iv = Convert.FromBase64String(aes[1]);
string encryptedContent = "";
Aes aesKey = AESKeyProvider.ProvideKey();
var encryptor = aesKey.CreateEncryptor(key, iv);
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
swEncrypt.Write(fileContent);
}
}
encryptedContent = Convert.ToBase64String(msEncrypt.ToArray());
}
FileManager.WriteTextToFile("simetricna-enkripcija.txt", encryptedContent);
MessageBox.Show(encryptedContent);
}
private void UIActionSymDecrypt_Click(object sender, EventArgs e)
{
string fullPath = FileManager.RootPath + "tajni_kljuc.txt";
string[] aes = FileManager.ReadTextFile(fullPath).Split(' ');
byte[] key = Convert.FromBase64String(aes[0]);
byte[] iv = Convert.FromBase64String(aes[1]);
string decryptedContent = "";
string encryptedContent = FileManager.ReadTextFile(FileManager.RootPath + "simetricna-enkripcija.txt");
Aes aesKey = AESKeyProvider.ProvideKey();
var decryptor = aesKey.CreateDecryptor(key, iv);
using (MemoryStream msDecrypt = new MemoryStream(Convert.FromBase64String(encryptedContent)))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader swDecrypt = new StreamReader(csDecrypt))
{
decryptedContent = swDecrypt.ReadToEnd();
}
}
}
FileManager.WriteTextToFile("simetricna-dekripcija.txt", decryptedContent);
MessageBox.Show(decryptedContent);
}
private void UIActionCreateKeyFiles_Click(object sender, EventArgs e)
{
RSAKeyGenerator rsaGenerator = new RSAKeyGenerator(RSAKeyProvider.ProvideKey());
AESKeyGenerator aesGenerator = new AESKeyGenerator(AESKeyProvider.ProvideKey());
rsaGenerator.GenerateKeys();
aesGenerator.GenerateKeys();
FileManager.WriteTextToFile("javni_kljuc.txt", rsaGenerator.PublicKey);
FileManager.WriteTextToFile("privatni_kljuc.txt", rsaGenerator.PrivateKey);
FileManager.WriteTextToFile("tajni_kljuc.txt", aesGenerator.SecretKey);
UIActionOpenEncryptionDialog.Enabled = true;
}