C#桌面应用程序在运行时引发加密异常
首先，让我承认我对C#非常陌生，特别是在使用密码学方面。 我开发了一个C#应用程序来管理我的登录和密码信息。我从Winform中读取信息并存储在XML中。XML是加密的 这个程序在我有代码的机器上运行得很好。在调试器中工作，在使用exe（visual studio的外部）时也可以工作 现在，当我将exe（整个bin目录）带到我的家用计算机（有C#express 2010）时，它在尝试读取/写入xml中的任何信息时崩溃。这是我在异常对话框中遇到的错误：C#桌面应用程序在运行时引发加密异常,c#,encryption,cryptography,C#,Encryption,Cryptography,首先，让我承认我对C#非常陌生，特别是在使用密码学方面。 我开发了一个C#应用程序来管理我的登录和密码信息。我从Winform中读取信息并存储在XML中。XML是加密的 这个程序在我有代码的机器上运行得很好。在调试器中工作，在使用exe（visual studio的外部）时也可以工作 现在，当我将exe（整个bin目录）带到我的家用计算机（有C#express 2010）时，它在尝试读取/写入xml中的任何信息时崩溃。这是我在异常对话框中遇到的错误： See the end of this me
See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.Security.Cryptography.CryptographicException: Bad Data.
at System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr)
at System.Security.Cryptography.Utils._DecryptKey(SafeKeyHandle hPubKey, Byte[] key, Int32 dwFlags)
at System.Security.Cryptography.RSACryptoServiceProvider.Decrypt(Byte[] rgb, Boolean fOAEP)
at System.Security.Cryptography.RSAPKCS1KeyExchangeDeformatter.DecryptKeyExchange(Byte[] rgbIn)
at System.Security.Cryptography.Xml.EncryptedXml.DecryptKey(Byte[] keyData, RSA rsa, Boolean useOAEP)
at System.Security.Cryptography.Xml.EncryptedXml.GetDecryptionKey(EncryptedData encryptedData, String symmetricAlgorithmUri)
at System.Security.Cryptography.Xml.EncryptedXml.DecryptDocument()
at MyCal.Calendar.Decrypt(String Doc, RSA Alg, String KeyName) in C:\Users\mpaudel\Desktop\MyCal\MyCal\Form1.cs:line 191
at MyCal.Calendar.btnSaveAdd_Click(Object sender, EventArgs e) in C:\Users\mpaudel\Desktop\MyCal\MyCal\Form1.cs:line 971
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5448 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/mscorlib.dll
----------------------------------------
MyCal
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Users/remoteuser/Desktop/Release/MyCal.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5446 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5453 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Windows.Forms.Calendar
Assembly Version: 1.0.4359.17528
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Users/remoteuser/Desktop/Release/System.Windows.Forms.Calendar.DLL
----------------------------------------
RicherTextBox
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Users/remoteuser/Desktop/Release/RicherTextBox.DLL
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
33fead0k
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5453 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
Microsoft.mshtml
Assembly Version: 7.0.3300.0
Win32 Version: 7.0.3300.0
CodeBase: file:///C:/Windows/assembly/GAC/Microsoft.mshtml/7.0.3300.0__b03f5f7f11d50a3a/Microsoft.mshtml.dll
----------------------------------------
System.Security
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Security/2.0.0.0__b03f5f7f11d50a3a/System.Security.dll
----------------------------------------
************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.
For example:
<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>
When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.
有关调用的详细信息，请参阅此消息的结尾
即时（JIT）调试，而不是此对话框。
**************例外文本**************
System.Security.Cryptography.Cryptography异常：错误数据。
在System.Security.Cryptography.CryptographyException.ThrowCryptogaphicException（Int32 hr）中
在System.Security.Cryptography.Utils.\u DecryptKey（SafeKeyHandle hPubKey，Byte[]key，Int32 dwFlags）
在System.Security.Cryptography.RSACryptoServiceProvider.Decrypt（字节[]rgb，布尔值fOAEP）
位于System.Security.Cryptography.RSAPKCS1KeyExchangeDeformatter.DecryptKeyExchange（字节[]rgbIn）
在System.Security.Cryptography.Xml.EncryptedXml.DecryptKey（字节[]keyData，RSA，布尔USEOEP）
位于System.Security.Cryptography.Xml.EncryptedXml.GetDecryptionKey（EncryptedData EncryptedData，String symmetricAlgorithmUri）
在System.Security.Cryptography.Xml.EncryptedXml.DecryptDocument（）中
在C:\Users\mpaudel\Desktop\MyCal\MyCal\Form1.cs中的MyCal.Calendar.Decrypt（String Doc、RSA Alg、String KeyName）中：第191行
在MyCal.Calendar.btnSaveAdd_中，单击C:\Users\mpaudel\Desktop\MyCal\MyCal\Form1.cs:第971行中的（对象发送者，事件参数e）
在System.Windows.Forms.Control.OnClick（EventArgs e）中
在System.Windows.Forms.Button.OnMouseUp（MouseEventArgs-mevent）上
在System.Windows.Forms.Control.WmMouseUp（Message&m、MouseButtons按钮、Int32单击）
位于System.Windows.Forms.Control.WndProc（Message&m）
位于System.Windows.Forms.ButtonBase.WndProc（Message&m）
在System.Windows.Forms.Button.WndProc（Message&m）中
在System.Windows.Forms.Control.ControlNativeWindow.WndProc（Message&m）中
在System.Windows.Forms.NativeWindow.Callback（IntPtr hWnd、Int32 msg、IntPtr wparam、IntPtr lparam）中
**************加载的程序集**************
mscorlib
程序集版本：2.0.0.0
Win32版本：2.0.50727.5448（Win7SP1GDR.050727-5400）
代码库：file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/mscorlib.dll
----------------------------------------
麦卡尔
程序集版本：1.0.0.0
Win32版本：1.0.0.0
代码库：file:///C:/Users/remoteuser/Desktop/Release/MyCal.exe
----------------------------------------
System.Windows.Forms
程序集版本：2.0.0.0
Win32版本：2.0.50727.5446（Win7SP1GDR.050727-5400）
代码库：file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
系统
程序集版本：2.0.0.0
Win32版本：2.0.50727.5453（Win7SP1GDR.050727-5400）
代码库：file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
系统图
程序集版本：2.0.0.0
Win32版本：2.0.50727.5420（Win7SP1.050727-5400）
代码库：file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Windows.Forms.Calendar
组件版本：1.0.4359.17528
Win32版本：1.0.0.0
代码库：file:///C:/Users/remoteuser/Desktop/Release/System.Windows.Forms.Calendar.DLL
----------------------------------------
RichertTextBox
程序集版本：1.0.0.0
Win32版本：1.0.0.0
代码库：file:///C:/Users/remoteuser/Desktop/Release/RicherTextBox.DLL
----------------------------------------
命名空间
程序集版本：2.0.0.0
Win32版本：2.0.50727.5420（Win7SP1.050727-5400）
代码库：file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
系统配置
程序集版本：2.0.0.0
Win32版本：2.0.50727.5420（Win7SP1.050727-5400）
代码库：file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
33fead0k
程序集版本：2.0.0.0
Win32版本：2.0.50727.5453（Win7SP1GDR.050727-5400）
代码库：file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
Microsoft.mshtml
装配版本：7.0.3300.0
Win32版本：7.0.3300.0
代码库：file:///C:/Windows/assembly/GAC/Microsoft.mshtml/7.0.3300.0__b03f5f7f11d50a3a/Microsoft.mshtml.dll
----------------------------------------
系统安全
程序集版本：2.0.0.0
Win32版本：2.0.50727.5420（Win7SP1.050727-5400）
代码库：file:///C:/Windows/assembly/GAC_MSIL/System.Security/2.0.0.0__b03f5f7f11d50a3a/System.Security.dll
----------------------------------------
**************JIT调试**************
要启用即时（JIT）调试，请为
应用程序或计算机（machine.config）必须具有
在system.windows.forms节中设置的值。
应用程序还必须通过调试进行编译
启用。
例如：
启用JIT调试时，任何未处理的异常
将发送到计算机上注册的JIT调试器
而不是由此对话框处理。
public partial class frmLogOn : Form
{
public frmLogOn()
{
InitializeComponent();
}
string LOGON_FILE_NAME = "logon.xml";//"logon.xml";
private void btnEnterLogon_Click(object sender, EventArgs e)
{
CspParameters cspParams = new CspParameters();
cspParams.KeyContainerName = "XML_ENC_RSA_KEY";
RSACryptoServiceProvider rsaKey = new RSACryptoServiceProvider(cspParams);
Decrypt(LOGON_FILE_NAME, rsaKey, "rsaKey");
//Read Password from the xml file
XmlDocument xmlDoc = new XmlDocument();
if (File.Exists(LOGON_FILE_NAME))
{
XmlTextReader rdrXml = new XmlTextReader(LOGON_FILE_NAME);
string existingpswd;
do
{
switch (rdrXml.NodeType)
{
case XmlNodeType.Text:
existingpswd = rdrXml.Value;
if (this.txtpswdLogon.Text == existingpswd)
{
this.DialogResult = DialogResult.OK;
}
else
{
MessageBox.Show("Password did not match", "Validate Entry", MessageBoxButtons.OK);
rdrXml.Close();
Encrypt(LOGON_FILE_NAME, "Pswrds", "EncryptedElement1", rsaKey, "rsaKey");
return;
}
break;
}
} while (rdrXml.Read());
rdrXml.Close();
Encrypt(LOGON_FILE_NAME, "Pswrds", "EncryptedElement1", rsaKey, "rsaKey");
}
}
private void chkChangepswdLogon_CheckedChanged(object sender, EventArgs e)
{
if (this.chkChangepswdLogon.Checked == true)
{
this.Height = 180;
this.txtNewPswdLogon.Visible = true;
this.txtOldPswdLogon.Visible = true;
this.btnChangeLogOn.Visible = true;
this.txtOldPswdLogon.Focus();
}
else if (this.chkChangepswdLogon.Checked == false)
{
this.Height = 105;
this.txtNewPswdLogon.Visible = false;
this.txtOldPswdLogon.Visible = false;
this.btnChangeLogOn.Visible = false;
}
}
private void frmLogOn_Load(object sender, EventArgs e)
{
}
private void btnChangeLogOn_Click(object sender, EventArgs e)
{
CspParameters cspParams = new CspParameters();
cspParams.KeyContainerName = "XML_ENC_RSA_KEY";
RSACryptoServiceProvider rsaKey = new RSACryptoServiceProvider(cspParams);
Decrypt(LOGON_FILE_NAME, rsaKey, "rsaKey");
XmlTextReader reader = new XmlTextReader(LOGON_FILE_NAME);
XmlDocument doc = new XmlDocument();
doc.Load(reader);
reader.Close();
XmlNode oldRecord;
XmlElement root = doc.DocumentElement;
try
{
oldRecord = root.SelectSingleNode("/Pswrds/pswd[password='" + this.txtOldPswdLogon.Text + "']");
if (oldRecord == null)
{
MessageBox.Show("Wrong existing password, not authorized to change");
this.txtNewPswdLogon.Text = "";
this.txtOldPswdLogon.Text = "";
this.txtpswdLogon.Text = "";
return;
Encrypt(LOGON_FILE_NAME, "Pswrds", "EncryptedElement1", rsaKey, "rsaKey");
}
}
catch
{
MessageBox.Show("Wrong existing password, not authorized to change");
return;
Encrypt(LOGON_FILE_NAME, "Pswrds", "EncryptedElement1", rsaKey, "rsaKey");
}
string aa = oldRecord.Value;
XmlElement newRecord = doc.CreateElement("pswd");
newRecord.InnerXml = "<password>" + this.txtNewPswdLogon.Text + "</password>" ;
root.ReplaceChild(newRecord, oldRecord);
//save the output to a file
doc.Save(LOGON_FILE_NAME);
MessageBox.Show("Password successfully changed.");
this.txtNewPswdLogon.Text = "";
this.txtOldPswdLogon.Text = "";
this.txtpswdLogon.Text = "";
this.chkChangepswdLogon.Checked = false;
Encrypt(LOGON_FILE_NAME, "Pswrds", "EncryptedElement1", rsaKey, "rsaKey");
}
public static void Encrypt(string Doc, string ElementToEncrypt, string EncryptionElementID, RSA Alg, string KeyName)
{
// Create an XmlDocument object.
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.PreserveWhitespace = true;
xmlDoc.Load(Doc);
// Check the arguments.
if (Doc == null)
throw new ArgumentNullException("Doc");
if (ElementToEncrypt == null)
throw new ArgumentNullException("ElementToEncrypt");
if (EncryptionElementID == null)
throw new ArgumentNullException("EncryptionElementID");
if (Alg == null)
throw new ArgumentNullException("Alg");
if (KeyName == null)
throw new ArgumentNullException("KeyName");
////////////////////////////////////////////////
// Find the specified element in the XmlDocument
// object and create a new XmlElemnt object.
////////////////////////////////////////////////
XmlElement elementToEncrypt = xmlDoc.GetElementsByTagName(ElementToEncrypt)[0] as XmlElement;
// Throw an XmlException if the element was not found.
if (elementToEncrypt == null)
{
throw new XmlException("The specified element was not found");
}
RijndaelManaged sessionKey = null;
try
{
//////////////////////////////////////////////////
// Create a new instance of the EncryptedXml class
// and use it to encrypt the XmlElement with the
// a new random symmetric key.
//////////////////////////////////////////////////
// Create a 256 bit Rijndael key.
sessionKey = new RijndaelManaged();
sessionKey.KeySize = 256;
EncryptedXml eXml = new EncryptedXml();
byte[] encryptedElement = eXml.EncryptData(elementToEncrypt, sessionKey, false);
////////////////////////////////////////////////
// Construct an EncryptedData object and populate
// it with the desired encryption information.
////////////////////////////////////////////////
EncryptedData edElement = new EncryptedData();
edElement.Type = EncryptedXml.XmlEncElementUrl;
edElement.Id = EncryptionElementID;
// Create an EncryptionMethod element so that the
// receiver knows which algorithm to use for decryption.
edElement.EncryptionMethod = new EncryptionMethod(EncryptedXml.XmlEncAES256Url);
// Encrypt the session key and add it to an EncryptedKey element.
EncryptedKey ek = new EncryptedKey();
byte[] encryptedKey = EncryptedXml.EncryptKey(sessionKey.Key, Alg, false);
ek.CipherData = new CipherData(encryptedKey);
ek.EncryptionMethod = new EncryptionMethod(EncryptedXml.XmlEncRSA15Url);
// Create a new DataReference element
// for the KeyInfo element. This optional
// element specifies which EncryptedData
// uses this key. An XML document can have
// multiple EncryptedData elements that use
// different keys.
DataReference dRef = new DataReference();
// Specify the EncryptedData URI.
dRef.Uri = "#" + EncryptionElementID;
// Add the DataReference to the EncryptedKey.
ek.AddReference(dRef);
// Add the encrypted key to the
// EncryptedData object.
edElement.KeyInfo.AddClause(new KeyInfoEncryptedKey(ek));
// Set the KeyInfo element to specify the
// name of the RSA key.
// Create a new KeyInfoName element.
KeyInfoName kin = new KeyInfoName();
// Specify a name for the key.
kin.Value = KeyName;
// Add the KeyInfoName element to the
// EncryptedKey object.
ek.KeyInfo.AddClause(kin);
// Add the encrypted element data to the
// EncryptedData object.
edElement.CipherData.CipherValue = encryptedElement;
////////////////////////////////////////////////////
// Replace the element from the original XmlDocument
// object with the EncryptedData element.
////////////////////////////////////////////////////
EncryptedXml.ReplaceElement(elementToEncrypt, edElement, false);
xmlDoc.Save(Doc);
}
catch (Exception e)
{
// re-throw the exception.
throw e;
}
finally
{
if (sessionKey != null)
{
sessionKey.Clear();
}
}
}
public static void Decrypt(string Doc, RSA Alg, string KeyName)
{
// Create an XmlDocument object.
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.PreserveWhitespace = true;
xmlDoc.Load(Doc);
// Check the arguments.
if (Doc == null)
throw new ArgumentNullException("Doc");
if (Alg == null)
throw new ArgumentNullException("Alg");
if (KeyName == null)
throw new ArgumentNullException("KeyName");
// Create a new EncryptedXml object.
EncryptedXml exml = new EncryptedXml(xmlDoc);
// Add a key-name mapping.
// This method can only decrypt documents
// that present the specified key name.
exml.AddKeyNameMapping(KeyName, Alg);
// Decrypt the element.
exml.DecryptDocument();
xmlDoc.Save(Doc);
}
}
公共部分类frmLogOn:Form
{
公共frmLo
catch (Exception e)
{
// re-throw the exception.
throw e;
}
if (Doc == null)
throw new ArgumentNullException("Doc");