public void RemoveEntry(KeyEntry entry)
{
if (_privateKeys.Contains(entry))
{
_privateKeys.Remove(entry);
Save();
RaisePrivateKeyUpdatedEvent();
return;
}
if (_publicKeys.Contains(entry))
{
_publicKeys.Remove(entry);
Save();
RaisePublicKeyUpdatedEvent();
return;
}
}
private void btnEncryptText_Click(object sender, EventArgs e)
{
if (txtEncryptPlain.Text.Length == 0)
{
return;
}
try {
KeyEntry publicKeyEntry = cbPublicKeys2.SelectedItem as KeyEntry;
if (publicKeyEntry == null)
{
throw new Exception("暗号化に利用する公開鍵を選択してください");
}
ECDomainNames domain;
byte[] publicKey = ParsePublicKey(publicKeyEntry.Key, out domain);
string encryptType = null;
SymmetricAlgorithm algo = null;
switch (cbEncryptCrypto.SelectedIndex)
{
case 0:
encryptType = "ecies+xor";
algo = null;
break;
case 1:
case 2:
encryptType = "ecies+camellia";
algo = new CamelliaManaged();
algo.BlockSize = 128;
if (cbEncryptCrypto.SelectedIndex == 1)
{
encryptType += "128";
algo.KeySize = 128;
}
else
{
encryptType += "256";
algo.KeySize = 256;
}
break;
case 3:
case 4:
encryptType = "ecies+rijndael";
algo = new openCrypto.RijndaelManaged();
algo.BlockSize = 128;
if (cbEncryptCrypto.SelectedIndex == 3)
{
encryptType += "128";
algo.KeySize = 128;
}
else
{
encryptType += "256";
algo.KeySize = 256;
}
break;
default:
throw new CryptographicException("Unknown");
}
if (algo != null)
{
algo.Mode = CipherMode.CBC;
algo.Padding = PaddingMode.PKCS7;
}
ECIES ecies = new ECIES(domain, algo);
ecies.Parameters.PublicKey = publicKey;
string encrypted = Convert.ToBase64String(ecies.Encrypt(Encoding.UTF8.GetBytes(txtEncryptPlain.Text)));
txtEncryptCipher.Text = encryptType + "=" + encrypted;
} catch (Exception ex) {
MessageBox.Show(ex.Message);
}
}
