public static bool GetSharedFilePermission(string fileName, string processName, string userName, string tagStr, ref string iv, ref string key, ref uint accessFlags, ref string lastError)
{
bool retVal = false;
try
{
lastError = string.Empty;
ServiceReference1.ServiceSoapClient client = GetServiceClient(ref lastError);
if (null == client)
{
return(false);
}
string ivStr = tagStr;
string serverAccount = GlobalConfig.AccountName;
int index = tagStr.IndexOf(";");
if (index > 0)
{
serverAccount = tagStr.Substring(0, index);
ivStr = tagStr.Substring(index + 1);
}
UserInfo userInfo = new UserInfo();
string keyStr = string.Empty;
userInfo.FileName = fileName;
userInfo.AccountName = serverAccount;
userInfo.ProcessName = processName;
userInfo.UserName = userName;
userInfo.UserPassword = password;
userInfo.CreationTime = DateTime.Now.ToFileTime();;
userInfo.EncryptionIV = ivStr;
string userInfoStr = DigitalRightControl.EncryptObjectToStr <UserInfo>(userInfo);
retVal = client.GetSharedFilePermission(userInfoStr, ref key, ref iv, ref accessFlags, ref lastError);
}
catch (Exception ex)
{
lastError = "Get file key failed with error:" + ex.Message;
retVal = false;
}
return(retVal);
}
public bool GetSharedFileList()
{
string lastError = string.Empty;
string encryptFileList = string.Empty;
Dictionary <string, DRPolicy> shareList = new Dictionary <string, DRPolicy>();
//bool retVal = WebFormServices.GetFileList(AccountForm.accountName, AccountForm.password, ref encryptFileList, ref lastError);
//if (!retVal)
//{
// MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
// MessageBox.Show(lastError, "GetFileList", MessageBoxButtons.OK, MessageBoxIcon.Error);
// return false;
//}
//else
{
if (encryptFileList.Length > 0)
{
List <string> decrypFileList = DigitalRightControl.DecryptStrToObject <List <string> >(encryptFileList);
foreach (string name in decrypFileList)
{
if (name.Length > 0)
{
//the extension of the file is the creation time.
string creationTimeStr = Path.GetExtension(name).Substring(1);
string fileName = Path.GetFileNameWithoutExtension(name);
DRPolicy drPolicy = new DRPolicy();
drPolicy.FileName = fileName;
drPolicy.CreationTime = long.Parse(creationTimeStr);
drPolicy.ExpireTime = 0;
shareList.Add(creationTimeStr, drPolicy);
}
}
}
sharedFileList = shareList;
InitListView();
}
return(true);
}
private bool AddNewFileDRInfoToServer(ref string iv, ref string key, ref long creationTime)
{
bool retVal = false;
string lastError = string.Empty;
try
{
iv = string.Empty;
key = string.Empty;
creationTime = 0;
if (AccountForm.accountName.Length == 0 || AccountForm.password.Length == 0)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Can't enable revoke access feature for guest user!", "Create share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(retVal);
}
selectedDRPolicy = GetDRSetting();
string encryptedDRPolicy = DigitalRightControl.EncryptObjectToStr <DRPolicy>(selectedDRPolicy);
//retVal = WebFormServices.AddNewFile(AccountForm.accountName, AccountForm.password, encryptedDRPolicy, ref creationTime, ref key, ref iv, ref lastError);
//if (!retVal)
//{
// MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
// MessageBox.Show("Create share encrypted file failed with error:" + lastError, "Process share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
// return retVal;
//}
//else
{
selectedDRPolicy.CreationTime = creationTime;
isNewFileAddedToServer = true;
}
}
catch (Exception ex)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Get encryption key info failed with error:" + ex.Message, "GetEncryptionKeyAndIVFromServer", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return(retVal);
}
private void button_EditSharedFile_Click(object sender, EventArgs e)
{
if (listView_SharedFiles.SelectedItems.Count != 1)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Please select a file.", "Edit", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
string creationTimeStr = (string)listView_SharedFiles.SelectedItems[0].Tag;
if (sharedFileList.ContainsKey(creationTimeStr))
{
DRPolicy drPolicy = sharedFileList[creationTimeStr];
if (drPolicy.ExpireTime == 0)
{
string fileName = drPolicy.FileName;
long creationTime = drPolicy.CreationTime;
string lastError = string.Empty;
string encryptedDRPolicy = string.Empty;
//bool retVal = WebFormServices.GetFileDRInfo(AccountForm.accountName, AccountForm.password, fileName, creationTime, ref encryptedDRPolicy, ref lastError);
//if (!retVal)
//{
// MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
// MessageBox.Show("Get digital right information for file " + fileName + " failed with error:" + lastError, "GetFileDRInfo", MessageBoxButtons.OK, MessageBoxIcon.Error);
// return;
//}
drPolicy = DigitalRightControl.DecryptStrToObject <DRPolicy>(encryptedDRPolicy);
drPolicy.CreationTime = creationTime;
sharedFileList[creationTimeStr] = drPolicy;
}
ShareFileForm shareFileForm = new ShareFileForm(drPolicy);
shareFileForm.ShowDialog();
}
}
private bool GetAccessPermissionFromServer(FilterAPI.MessageSendData messageSend,
DRPolicyData drPolicyData,
string userName,
string processName,
string userPassword,
ref CacheUserAccessInfo cacheUserAccessInfo)
{
Boolean retVal = true;
string fileName = messageSend.FileName;
string lastError = string.Empty;
try
{
UserInfo userInfo = new UserInfo();
string keyStr = string.Empty;
string ivStr = string.Empty;
userInfo.FileName = Path.GetFileName(messageSend.FileName) + DigitalRightControl.SECURE_SHARE_FILE_EXTENSION;
userInfo.AccountName = drPolicyData.AccountName;
userInfo.ProcessName = processName;
userInfo.UserName = userName;
userInfo.UserPassword = userPassword;
userInfo.CreationTime = drPolicyData.CreationTime;
byte[] computerId = new byte[52];
uint computerIdLength = (uint)computerId.Length;
IntPtr computerIdPtr = Marshal.UnsafeAddrOfPinnedArrayElement(computerId, 0);
retVal = FilterAPI.GetUniqueComputerId(computerIdPtr, ref computerIdLength);
if (!retVal)
{
string message = "Get computerId failed,return error:" + FilterAPI.GetLastErrorMessage();
EventManager.WriteMessage(366, "GetAccessPermissionFromServer", EventLevel.Error, message);
return(retVal);
}
Array.Resize(ref computerId, (int)computerIdLength);
userInfo.ComputerId = UnicodeEncoding.Unicode.GetString(computerId);
string userInfoStr = DigitalRightControl.EncryptObjectToStr <UserInfo>(userInfo);
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
//retVal = WebFormServices.GetFileKey(userInfoStr, ref keyStr, ref ivStr, ref lastError);
stopWatch.Stop();
if (!retVal)
{
string message = "Get file " + messageSend.FileName + " permission from server return error:" + lastError;
EventManager.WriteMessage(293, "GetAccessPermissionFromServer", EventLevel.Error, message);
return(retVal);
}
else
{
string message = "Get file " + messageSend.FileName + " permission frome server return succeed, spent " + stopWatch.ElapsedMilliseconds + " milliseconds.";
EventManager.WriteMessage(208, "GetAccessPermissionFromServer", EventLevel.Verbose, message);
}
cacheUserAccessInfo.key = keyStr;
cacheUserAccessInfo.iv = ivStr;
}
catch (Exception ex)
{
EventManager.WriteMessage(286, "GetAccessPermissionFromServer", EventLevel.Error, "Get file " + messageSend.FileName + "permission failed with exception:" + ex.Message);
retVal = false;
}
return(retVal);
}
Boolean FilterCallback(IntPtr sendDataPtr, IntPtr replyDataPtr)
{
Boolean ret = true;
try
{
FilterAPI.MessageSendData messageSend = (FilterAPI.MessageSendData)Marshal.PtrToStructure(sendDataPtr, typeof(FilterAPI.MessageSendData));
if (FilterAPI.MESSAGE_SEND_VERIFICATION_NUMBER != messageSend.VerificationNumber)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Received message corrupted.Please check if the MessageSendData structure is correct.");
EventManager.WriteMessage(139, "FilterCallback", EventLevel.Error, "Received message corrupted.Please check if the MessageSendData structure is correct.");
return(false);
}
EventManager.WriteMessage(149, "FilterCallback", EventLevel.Verbose, "Received message Id#" + messageSend.MessageId + " type:" + messageSend.MessageType
+ " CreateOptions:" + messageSend.CreateOptions.ToString("X") + " infoClass:" + messageSend.InfoClass + " fileName:" + messageSend.FileName);
filterMessage.AddMessage(messageSend);
FileProtectorUnitTest.FileIOEventHandler(messageSend);
if (replyDataPtr.ToInt64() != 0)
{
FilterAPI.MessageReplyData messageReply = (FilterAPI.MessageReplyData)Marshal.PtrToStructure(replyDataPtr, typeof(FilterAPI.MessageReplyData));
//if (messageSend.MessageType == (uint)FilterAPI.FilterCommand.FILTER_SEND_PROCESS_TERMINATION_INFO)
//{
// //the process termination callback, you can get the notification if you register the callback setting of the process filter.
//}
if (messageSend.MessageType == (uint)FilterAPI.FilterCommand.FILTER_SEND_PROCESS_CREATION_INFO)
{
//this is new process creation, you can block it here by returning the STATUS_ACCESS_DENIED, below is the process information
FilterAPI.PROCESS_INFO processInfo = (FilterAPI.PROCESS_INFO)Marshal.PtrToStructure(sendDataPtr, typeof(FilterAPI.PROCESS_INFO));
messageReply.ReturnStatus = processInfo.Status;
Marshal.StructureToPtr(messageReply, replyDataPtr, true);
}
else if (messageSend.MessageType == (uint)FilterAPI.FilterCommand.FILTER_REQUEST_ENCRYPTION_IV_AND_KEY)
{
//this is encryption filter rule with boolean config "REQUEST_ENCRYPT_KEY_AND_IV_FROM_SERVICE" enabled.
//the filter driver request the IV and key to open or create the encrypted file.
//if you want to deny the file open or creation, you set the value as below:
//messageReply.ReturnStatus = (uint)FilterAPI.NTSTATUS.STATUS_ACCESS_DENIED;
//messageReply.FilterStatus = (uint)FilterAPI.FilterStatus.FILTER_COMPLETE_PRE_OPERATION;
EventManager.WriteMessage(200, "filtercallback", EventLevel.Verbose, messageSend.FileName + " FILTER_REQUEST_ENCRYPTION_IV_AND_KEY");
//Here we return the test iv and key to the filter driver, you need to replace with you own iv and key in your code.
AESDataBuffer aesData = new AESDataBuffer();
aesData.AccessFlags = FilterAPI.ALLOW_MAX_RIGHT_ACCESS;
aesData.IV = FilterAPI.DEFAULT_IV_TAG;
aesData.IVLength = (uint)aesData.IV.Length;
aesData.EncryptionKey = Utils.GetKeyByPassPhrase(DigitalRightControl.PassPhrase);
aesData.EncryptionKeyLength = (uint)aesData.EncryptionKey.Length;
byte[] aesDataArray = DigitalRightControl.ConvertAESDataToByteArray(aesData);
messageReply.DataBufferLength = (uint)aesDataArray.Length;
Array.Copy(aesDataArray, messageReply.DataBuffer, aesDataArray.Length);
messageReply.ReturnStatus = (uint)FilterAPI.NTSTATUS.STATUS_SUCCESS;
}
else if (messageSend.MessageType == (uint)FilterAPI.FilterCommand.FILTER_REQUEST_ENCRYPTION_IV_AND_KEY_AND_TAGDATA)
{
//this is encryption filter rule with boolean config "REQUEST_ENCRYPT_KEY_IV_AND_TAGDATA_FROM_SERVICE" enabled.
//the filter driver request the IV and key to open or create the encrypted file.
//if you want to deny the file open or creation, you set the value as below:
//messageReply.ReturnStatus = (uint)FilterAPI.NTSTATUS.STATUS_ACCESS_DENIED;
//messageReply.FilterStatus = (uint)FilterAPI.FilterStatus.FILTER_COMPLETE_PRE_OPERATION;
if (messageSend.DataBufferLength > 0)
{
//this is the tag data which attached to the encrypted file .
string tagDataStr = Encoding.Unicode.GetString(messageSend.DataBuffer);
EventManager.WriteMessage(235, "filtercallback", EventLevel.Verbose, "EncryptedFile:" + messageSend.FileName + ",tagData:" + tagDataStr);
}
//Here we return the test iv ,key and tag data to the filter driver, you need to replace with you own iv and key in your code.
AESDataBuffer aesData = new AESDataBuffer();
aesData.AccessFlags = FilterAPI.ALLOW_MAX_RIGHT_ACCESS;
aesData.IV = FilterAPI.DEFAULT_IV_TAG;
aesData.IVLength = (uint)aesData.IV.Length;
aesData.EncryptionKey = Utils.GetKeyByPassPhrase(DigitalRightControl.PassPhrase);
aesData.EncryptionKeyLength = (uint)aesData.EncryptionKey.Length;
aesData.TagData = Encoding.Unicode.GetBytes("TagData:" + messageSend.FileName);
aesData.TagDataLength = (uint)aesData.TagData.Length;
byte[] aesDataArray = DigitalRightControl.ConvertAESDataToByteArray(aesData);
messageReply.DataBufferLength = (uint)aesDataArray.Length;
Array.Copy(aesDataArray, messageReply.DataBuffer, aesDataArray.Length);
messageReply.ReturnStatus = (uint)FilterAPI.NTSTATUS.STATUS_SUCCESS;
}
else
{
//this is for control filter driver when the pre-IO was registered.
//here you can control the IO behaviour and modify the data.
if (!FileProtectorUnitTest.UnitTestCallbackHandler(messageSend) || !FilterService.AuthorizeFileAccess(messageSend, ref messageReply))
{
//to comple the PRE_IO
messageReply.ReturnStatus = (uint)FilterAPI.NTSTATUS.STATUS_ACCESS_DENIED;
messageReply.FilterStatus = (uint)FilterAPI.FilterStatus.FILTER_COMPLETE_PRE_OPERATION;
EventManager.WriteMessage(160, "FilterCallback", EventLevel.Error, "Return error for I/O request:" + ((FilterAPI.MessageType)messageSend.MessageType).ToString() +
",fileName:" + messageSend.FileName);
}
else
{
messageReply.MessageId = messageSend.MessageId;
messageReply.MessageType = messageSend.MessageType;
messageReply.ReturnStatus = (uint)FilterAPI.NTSTATUS.STATUS_SUCCESS;
}
}
Marshal.StructureToPtr(messageReply, replyDataPtr, true);
}
return(ret);
}
catch (Exception ex)
{
EventManager.WriteMessage(134, "FilterCallback", EventLevel.Error, "filter callback exception." + ex.Message);
return(false);
}
}
private bool CreateOrModifyShareEncryptFile()
{
string lastError = string.Empty;
string authorizedProcessNames = textBox_authorizedProcessNames.Text.Trim();
string unauthorizedProcessNames = textBox_UnauthorizedProcessNames.Text.Trim();
string authorizedUserNames = textBox_AuthorizedUserNames.Text.Trim();
string unauthorizedUserNames = textBox_UnauthorizedUserNames.Text.Trim();
string fileName = textBox_FileName.Text.Trim();
string targetFileName = textBox_TargetName.Text;
try
{
if (fileName.Length == 0)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("The file name can't be empty.", "Create share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
DateTime expireDateTime = dateTimePicker_ExpireDate.Value.Date + dateTimePicker_ExpireTime.Value.TimeOfDay;
if (expireDateTime <= DateTime.Now)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("The expire time can't be less than current time.", "Create share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
if (selectedDRPolicy != null)
{
DRPolicy drPolicy = GetDRSetting();
string encryptedDRPolicy = DigitalRightControl.EncryptObjectToStr <DRPolicy>(drPolicy);
if (WebAPIServices.ModifySharedFileDRInfo(encryptedDRPolicy, ref lastError))
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Modify shared file " + textBox_FileName.Text + " policy succeeded.", "Modify shared file", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(true);
}
else
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Modify shared file " + textBox_FileName.Text + " policy failed with error:" + lastError, "Modify shared file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}
//here we generate the random unique IV and key, you can use your own key and iv
byte[] encryptionIV = Utils.GetRandomIV();
byte[] encryptionKey = Utils.GetRandomKey();
string keyStr = string.Empty;
string ivStr = string.Empty;
if (GlobalConfig.StoreSharedFileMetaDataInServer)
{
long creationTime = DateTime.Now.ToFileTime();
//send the encrypted file digital right information to the server and get back the iv and key.
if (!AddNewFileDRInfoToServer(ref ivStr, ref keyStr, ref creationTime))
{
return(false);
}
if (ivStr.Length > 0 && keyStr.Length > 0)
{
encryptionIV = Utils.ConvertHexStrToByteArray(ivStr);
encryptionKey = Utils.ConvertHexStrToByteArray(keyStr);
}
}
//for this example, we add the encryptIV and account name as the tag data to the encrypted file
//you can add your own custom tag data to the encyrpted file, so when someone open the encrypted file, you will get the tag data.
string tagStr = GlobalConfig.AccountName + ";" + ivStr;
byte[] tagData = UnicodeEncoding.Unicode.GetBytes(tagStr);
bool retVal = false;
if (fileName.Equals(targetFileName, StringComparison.CurrentCulture))
{
retVal = FilterAPI.AESEncryptFileWithTag(fileName, (uint)encryptionKey.Length, encryptionKey, (uint)encryptionIV.Length, encryptionIV, (uint)tagData.Length, tagData);
}
else
{
retVal = FilterAPI.AESEncryptFileToFileWithTag(fileName, targetFileName, (uint)encryptionKey.Length, encryptionKey, (uint)encryptionIV.Length, encryptionIV, (uint)tagData.Length, tagData);
}
if (!retVal)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Create encrypted file " + targetFileName + " failed with error:" + FilterAPI.GetLastErrorMessage(), "Create share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
if (GlobalConfig.StoreSharedFileMetaDataInServer)
{
WebAPIServices.DeleteShareFile(ivStr, ref lastError);
}
if (!fileName.Equals(targetFileName, StringComparison.CurrentCulture))
{
File.Delete(targetFileName);
}
return(false);
}
else
{
//set this flag to the encrypted file, require to get permission from user mode when the file open
if (!FilterAPI.SetHeaderFlags(targetFileName, (uint)AESFlags.Flags_Request_IV_And_Key_From_User, FilterAPI.ALLOW_MAX_RIGHT_ACCESS))
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("SetHeaderFlags for file " + targetFileName + " failed with error:" + FilterAPI.GetLastErrorMessage(), "SetHeaderFlags", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
if (!GlobalConfig.StoreSharedFileMetaDataInServer)
{
//add the permission meta data to a file and store it in the server, it will be used when the file open.
if (!DRServer.AddDRInfoToFile(targetFileName, authorizedProcessNames, unauthorizedProcessNames, authorizedUserNames, unauthorizedUserNames
, expireDateTime, encryptionIV, encryptionKey, FilterAPI.ALLOW_MAX_RIGHT_ACCESS.ToString()))
{
return(false);
}
}
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
string message = "Create encrypted file " + targetFileName + " succeeded, you can distribute this encrypted file to your client.\r\n\r\nDownload this file to the share file drop folder in the client,";
message += " then start the filter service there, now you can open the encrypted file if the process in client has the permission.";
MessageBox.Show(message, "Share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
return(true);
}
catch (Exception ex)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Create share file failed with error " + ex.Message, "Create share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}
static public bool GetFileAccessPermission(ref FilterAPI.MessageSendData messageSend, ref FilterAPI.MessageReplyData messageReply)
{
Boolean retVal = true;
string fileName = messageSend.FileName;
string lastError = string.Empty;
string processName = string.Empty;
string userName = string.Empty;
string encryptKey = string.Empty;
try
{
FilterAPI.DecodeProcessName(messageSend.ProcessId, out processName);
FilterAPI.DecodeUserName(messageSend.Sid, out userName);
//by default the tag data format is "accountName;ivStr"
int tagDataLength = (int)messageSend.DataBufferLength;
byte[] tagData = messageSend.DataBuffer;
Array.Resize(ref tagData, tagDataLength);
string tagStr = UnicodeEncoding.Unicode.GetString(tagData);
int index = tagStr.IndexOf(";");
byte[] iv = tagData;
if (index > 0)
{
string serverAccount = tagStr.Substring(0, index);
string ivStr = tagStr.Substring(index + 1);
iv = Utils.ConvertHexStrToByteArray(ivStr);
}
uint accessFlag = 0;
retVal = IsFileAccessAuthorized(fileName,
userName,
processName,
tagStr,
ref encryptKey,
ref accessFlag,
ref lastError);
if (retVal && !string.IsNullOrEmpty(encryptKey))
{
byte[] keyArray = Utils.ConvertHexStrToByteArray(encryptKey);
//write the iv and key to the reply data buffer with format FilterAPI.AESDataBuffer
AESDataBuffer aesData = new AESDataBuffer();
if (messageSend.MessageType == (uint)FilterAPI.FilterCommand.FILTER_REQUEST_ENCRYPTION_IV_AND_KEY_AND_ACCESSFLAG)
{
aesData.AccessFlags = FilterAPI.ALLOW_MAX_RIGHT_ACCESS;
}
else
{
aesData.AccessFlags = FilterAPI.ALLOW_MAX_RIGHT_ACCESS;
}
aesData.IV = iv;
aesData.IVLength = (uint)iv.Length;
aesData.EncryptionKey = keyArray;
aesData.EncryptionKeyLength = (uint)keyArray.Length;
byte[] aesDataArray = DigitalRightControl.ConvertAESDataToByteArray(aesData);
messageReply.DataBufferLength = (uint)aesDataArray.Length;
Array.Copy(aesDataArray, messageReply.DataBuffer, aesDataArray.Length);
messageReply.ReturnStatus = (uint)FilterAPI.NTSTATUS.STATUS_SUCCESS;
}
}
catch (Exception ex)
{
lastError = "GetFileAccessPermission exception." + ex.Message;
EventManager.WriteMessage(340, "GetFileAccessPermission", EventLevel.Error, lastError);
retVal = false;
}
if (!retVal)
{
byte[] errorBuffer = UnicodeEncoding.Unicode.GetBytes(lastError);
Array.Copy(errorBuffer, messageSend.DataBuffer, errorBuffer.Length);
messageSend.DataBufferLength = (uint)errorBuffer.Length;
}
return(retVal);
}
private bool CreateShareEncryptFile()
{
string lastError = string.Empty;
string key = string.Empty;
string iv = string.Empty;
long creationTime = DateTime.Now.ToFileTime();
try
{
if (textBox_FileName.Text.Trim().Length == 0)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("The file name can't be empty.", "Create share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
DateTime expireDateTime = dateTimePicker_ExpireDate.Value.Date + dateTimePicker_ExpireTime.Value.TimeOfDay;
if (expireDateTime <= DateTime.Now)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("The expire time can't be less than current time.", "Create share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
DRPolicyData policyData = GetDRPolicyData();
if (((uint)policyData.AESFlags & (uint)AESFlags.Flags_Enabled_Revoke_Access_Control) == (uint)AESFlags.Flags_Enabled_Revoke_Access_Control)
{
if (!AddNewFileDRInfoToServer(ref iv, ref key, ref creationTime))
{
return(false);
}
policyData.CreationTime = creationTime;
}
byte[] encryptIV = null;
byte[] encryptKey = null;
if (iv.Length > 0 && key.Length > 0)
{
encryptIV = Utils.ConvertHexStrToByteArray(iv);
encryptKey = Utils.ConvertHexStrToByteArray(key);
}
else
{
encryptIV = Utils.GetRandomIV();
encryptKey = Utils.GetRandomKey();
policyData.IV = encryptIV;
policyData.IVLength = (uint)encryptIV.Length;
policyData.EncryptionKey = encryptKey;
policyData.EncryptionKeyLength = (uint)encryptKey.Length;
}
if (!DigitalRightControl.EncryptFileWithEmbeddedDRPolicy(textBox_FileName.Text, textBox_OutputFilePath.Text, encryptIV, encryptKey, policyData, out lastError))
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Create share encrypted file " + textBox_FileName.Text + " failed with error:" + lastError, "Process share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
else
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Create encrypted file " + textBox_OutputFilePath.Text + " succeeded.", "Process share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Information);
selectedDRPolicy.CreationTime = creationTime;
selectedDRPolicy.FileName = Path.GetFileName(textBox_OutputFilePath.Text);
isNewFileAddedToServer = true;
return(true);
}
}
catch (Exception ex)
{
MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
MessageBox.Show("Create share file failed with error " + ex.Message, "Create share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}