private void PasswordEncryptionMethodCombo_Changed(object sender, EventArgs e)
{
switch (_passwordEncryptionMethodCombo.SelectedValue)
{
case EncryptionMethod.LogonCredentials:
_passwordEncryptionDataLabel.Text = "用户名:";
_passwordEncryptionDataButton.Text = CredentialsUI.GetLoggedInUser();
_passwordEncryptionDataButton.Tag = null;
_passwordEncryptionDataButton.Enabled = false;
_passwordEncryptionDataInfoLabel.Text = string.Empty;
break;
case EncryptionMethod.Certificate:
{
X509Certificate2 x509Certificate = _passwordEncryptionDataButton.Tag as X509Certificate2;
if (x509Certificate == null)
{
try
{
base.Enabled = false;
x509Certificate = Encryption.SelectCertificate();
}
finally
{
base.Enabled = true;
}
}
if (x509Certificate != null)
{
SetSelectedCertificate(x509Certificate);
}
else
{
_passwordEncryptionMethodCombo.SelectedValue = _passwordEncryptionMethodPrevious;
}
break;
}
default:
throw new NotImplementedException("Unexpected encryption method '{0}'".InvariantFormat(_passwordEncryptionMethodCombo.SelectedValue.ToString()));
}
_passwordEncryptionMethodPrevious = _passwordEncryptionMethodCombo.SelectedValue;
}
private unsafe static string DecryptStringUsingLocalUser(string encryptedString)
{
Crypto.DataBlob optionalEntropy = default(Crypto.DataBlob);
Crypto.CryptProtectPromptStruct promptStruct = default(Crypto.CryptProtectPromptStruct);
if (string.IsNullOrEmpty(encryptedString))
{
return(string.Empty);
}
optionalEntropy.Size = 0;
promptStruct.Size = 0;
byte[] array = Convert.FromBase64String(encryptedString);
Crypto.DataBlob dataIn = default(Crypto.DataBlob);
dataIn.Size = array.Length;
Crypto.DataBlob dataOut;
string result;
fixed(byte *value = array)
{
dataIn.Data = (IntPtr)(void *)value;
if (!Crypto.CryptUnprotectData(ref dataIn, null, ref optionalEntropy, (IntPtr)null, ref promptStruct, 0, out dataOut))
{
throw new Exception("使用{0}证书解密失败".InvariantFormat(CredentialsUI.GetLoggedInUser()));
}
char *ptr = (char *)(void *)dataOut.Data;
char[] array2 = new char[dataOut.Size / 2];
for (int i = 0; i < array2.Length; i++)
{
array2[i] = ptr[i];
}
result = new string(array2);
}
Crypto.LocalFree(dataOut.Data);
return(result);
}
static EncryptionSettings()
{
typeof(EncryptionSettings).GetSettingProperties(out _settingProperties);
_settingProperties["CredentialName"].Attribute.DefaultValue = CredentialsUI.GetLoggedInUser();
}
