SQL Server Standard 2005, SQL Mobile 2005 Data Encryption Issues
Jul 26, 2007
Hi,
I have a central database server that is runnning on SQL 2005 standard edition and Windows server 2003 standard as OS.
I realise that I can use SQL statements to encrypt and decrypt the data inside the standard SQL.
However, how do I read and write the data via an web application coded in C#.net and is also running on the same machine?
Another issue is, I need to replicate some of the data in this SQL standard over to a SQL mobile running on a mobile device running on Windows CE 5.0.
The mobile device also needs to read and write data to the encrypted data via a C#.net application.
Question is, with all these requirements to be met, can I use AES? I know that AES is not available on Windows XP and Windows Server 2000 and I cant find AES in the .net compact framework.
how do i go about ensuring security? how do I ensure that the symmetric key is the same both on the SQL standard and SQL mobile?
thank you.
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Jan 25, 2008
Hello,
I store data in an .mdf file (I use SQL server 2005), because this way it's easier to move the application from one machine to another.
I've faced a problem with the encryption of the database.
Is there a possibility/way to encrypt a database file so that, if someone else finds/copies the mdf, he/she won't be able to read it.
I thought about encrypting the string values of the tables itself and decode them inside the application and encide when Inserting, but why inventing somehing that might already exist.
Thank you.
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Oct 27, 2006
I read a couple of articles related to encryption topic in this forum and I feel that's really helpful I don't know if anyone has some knoeledge about the encryption issues in replication and clustering environment. I read some documents from Microsoft web site that explains how to move an encrypted database from its original server to another new server instance. That cause a lot manual works, if the database master key has been encrypted by the original service master key and you still want to enjoy the auto-open feature in the new environment. As we know the Microsoft SQL Server 2005 has a hierarchy encryption key structure and its top level service master key is really service oriented. For what kind of mechanism or set up, Microsoft makes their encrypted database working smoothly and automatically in a clustered and replicated infrastructure. Is that possible to sacrifice the security a bit by dump the service master key for database master key and make database more portable? I search the web site all the way, but couldn't find the related topic. Anybody has a good idea or experience to share?
Thanks,
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Apr 10, 2008
First of all I am planning to install sql 2005 standard and sql standard sp2
on vista ultimate professional using vs 2008 pro
I have some questions about installing sql 2005 what is the best way to install sql 2005 on
vista My article I got this from ms 403393 (upgrading sql standard 2005 to sql standard 2005sp2)
1 sql standard .(shortcut right click from cd/dvd not possible) I have heard command prompt start menu, click cmd
type run D: cd/dvd exe
From a wizard (sql sp2)
2. sql standard sp2
a. upgrade using a wizard
b. open a command prompt (not sure if right click is best option)
install dvd media example dqlserver2005sp2-kb921896-exe SKUUPGRADE=1(is run as administrator option on media)
do I type run or what do I type ?
c. go to system configuration page(where is this) you should see a single warnining you need to install
sp2, the edition should say success if it does not please reapply
d. on the registration page please enter your registeration number
e. on the comments to install please enter database services, reporting services
workstation components, books online and development tools( I wish to install
all components)
f. on the instance page click default instance(default install)
g. finish rest of wizard
h. apply sql sp2
I also have of seperate question of upgrading sql from vista using a Configuring local admin account
account (configuring administration from a wizard-will this notify
me by default) I do not want my administrative priviledges elevated.
I will be using default configurations for my installations.........
I often wish there would a nice picture examples of doing this
Please help
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Oct 6, 2006
Hi Everyone,
I have tried the Sync the data from sql server mobile (.SDF) to Sql server 2005 (.mdf).In push command, i am getting the error "Sql Server Everywhere encountered problems when opening the database".
string rdaOleDbConnectString = @"Provider=SQLOLEDB.1;User ID=sa;Initial Catalog=master;Data Source=PRASSANAPRASANNA;Password=master";
qlCeRemoteDataAccess rda = null;
try
{
rda = new SqlCeRemoteDataAccess();
rda.LocalConnectionString = "Data Source=D:/DATABASE/test.sdf";
rda.InternetUrl = http://localhost/Dataset/sqlcesa30.dll;
rda.Push("company", rdaOleDbConnectString, RdaBatchOption.BatchingOn);
MessageBox.Show("Completed");
}
catch (SqlCeException)
{
}
finally
{
rda.Dispose();
}
please guide me any one ours guys to solve this problem .
Thanks
Prasanna.
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Aug 24, 2007
HI,
may i know the sql server 2005 standard cd is equal sql server 2005 standard volumn license cd ?
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Jan 5, 2007
There are any import/export utilities for SQL Server 2005 Mobile Edition database? Which edition of SQL Server 2005 can do this?
Or we must use publication/subscription to transfer data to the mobile database?
Thank you for your help!
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Feb 17, 2006
Hi,
After creating mobile database into sql server 2005 management studio, how to insert the records from sql server 2005 management studio into and mobile database from excel file?
Thank you
Prashant
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Mar 31, 2006
Hello,
We are in need of some help around the use of SQL Server 2005 Mobile Edition.
The problem comes in when we have to import a large list of equipment ID€™s into the database.
The way that things work today is that the database only runs on the handheld computer, so we are having to process a large amount of data on the handheld therefore taking a lot of time.
If there were a way to have a €œseed€? database on the server side (running on Windows Server 2003 or similar) and import all of this data on the server side it would be more efficient and require less time.
Once the data was imported on the server side we can simply transfer this seed database down to the handheld
Could you please throw some light on the above queries.
Thanks in advance.
Jeeves
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Aug 8, 2006
Dear ppl,
I am writing an application for a device (MDA Pro T-Mobile) having Windows Mobile 5.0 using
-MS .NET Compact Framework 2.0 SP-1
-SQL Mobile 2005.
-VS 2005 .NET
The application uses Merge Replication. The error occurs in the Synchronise() Method of the SqlCeReplication object.
"SQL Server Mobile encountered problems when opening the database."
repl.AddSubscription(AddOption.CreateDatabase);
repl.Synchronize();
I don't understand why I am having this error. It does create the database on AddSubscription() method but it is failing opening the database on Synchronise(). I have also tried uninstalling and then reinstalling all the SQL Mobile components in the following order.
-sqlce30.wce5.armv4i.cab
-sqlce30.repl.wce5.armv4i.cab
-sqlce30.dev.ENU.wce5.armv4i.cab
However, when i run this application on a device(Dell X50 AXIM) with Pocket PC 2003, it runs fine creating the database and sysnchronising it.
The target platform for the project is Windows Mobile 5.0 Pocket PC SDK.
Does any one have any clue what could be the problem ?
Regards
Nabeel
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Mar 23, 2006
Hello,
I am developping a non-managed C++ application for PocketPC using a SQL Server mobile database.
The application is compiled for PocketPC 2003 and uses SQL Server Mobile v2. I use Visual Studio 2005. But I need to compile the application for Windows Mobile 5.0 devices. So I installed the WM5 SDK and had the WM5 into my project configuration.
The "ssceoledb.h" which I include incluses the "transact.h" file. But my problem is that this file is only provided with the PocketPC 2003 SDK and not in the WM5 SDK.
So I cannot use the WM5 configuration project with SQL Server. I also tried with the last SQL Server Mobile 2005 (ie v3.0) and the "ssceoledb30.h" also includes "transact.h".
Did I miss something to install ?
Do you know how I can resolve the problem ?
By advance, thank you for any answer.
--
Gregoire
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Jan 24, 2007
Hi,
Is there any way to measure bandwith usage during merge replication between sql server 2005 and sql server mobile 2005 running on a cradled wm5 mobile device.
Attaching the windows performance monitor to the network connection established over usb would work although I was wondering if there was something specific for this case integrated into Sql server 2005 / sql server mobile 2005 / Sql server management studio / third party tools that i could use ?
thnx,
pdns.
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Jan 9, 2007
hi,
I have some SQL CE database .sdf file on my handheld, and I was trying to connect to that file via SQL Server 2005 Management Studio, and it does not work. I am wondering if there is any good tool that I can use on desktop to connect to sqlce .sdf database file on my handheld?
Thanks.
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Apr 10, 2008
I have written following code in my application
I just want to display all the data of a Single table into a Data Grid, I know that we can drag and drop the table on to a form and datagrid is generated, but here I want to retrive those values through my code, how should i do that
I am getting following errors while running the program
Error 1) Error No. 28037, MS SQL Server 2005 Evrywhere Edition
Error: A request to send data to the computer running IIS has failed. For more information see HRESULT
Error 2) Error No. 0, SQL Server 2005 Evrywhere Edition ADO.Net Data Provider
Error: The specified table does not exist [ JobLists ].
Can anybody please tell me, where I went wrong ??? In this code anywhere else????
Note: While adding a Data Source of SQL Server 2005 Mobile Edition, I have added that .sdf file into my project, thats why I have written the Data Source as : .DbFile.sdf
@"Data Source = .DbDotNetCF.sdf";
The code is as follows:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlServerCe;
namespace DeviceApplication1
{
public partial class Form1 : Form
{
string filename = @".DbDotNetCF.sdf";
private DataSet dsJobLists;
public Form1()
{
InitializeComponent();
}
private void DeleteDB()
{
if (System.IO.File.Exists(filename))
{
System.IO.File.Delete(filename);
}
}
private void Sync()
{
SqlCeReplication repl = new SqlCeReplication();
repl.InternetUrl = @"http://localhost/WebsiteDotNetCF/sqlcesa30.dll";
repl.Publisher = @"RAHU";
repl.PublisherDatabase = @"DotNetCF";
repl.PublisherSecurityMode = SecurityType.NTAuthentication;
repl.Publication = @"PubDotNetCF";
repl.Subscriber = @"SubDotNetCF";
repl.SubscriberConnectionString = @"Data Source='" + filename + "';Max Database Size=128;Default Lock Escalation =100;";
try
{
if (!System.IO.File.Exists(filename))
{
repl.AddSubscription(AddOption.CreateDatabase);
}
repl.Synchronize();
}
catch (SqlCeException ex)
{
DisplaySQLCEErrors(ex);
}
finally
{
repl.Dispose();
}
// Display Same Data In Another DataGrid : dataGrid1
SqlCeConnection cn = new SqlCeConnection(@"Data Source='" + filename + "'");
SqlCeDataAdapter daJobLists = new SqlCeDataAdapter("SELECT JobListsID, JobID, PersonID FROM JobLists", cn);
if (dsJobLists == null)
{
dsJobLists = new DataSet();
}
try
{
dsJobLists.Clear();
daJobLists.Fill(dsJobLists, "JobLists");
dataGrid1.DataSource = dsJobLists.Tables["JobLists"];
}
catch (SqlCeException ex)
{
DisplaySQLCEErrors(ex);
}
}
private void DisplaySQLCEErrors(SqlCeException ex)
{
for (int i = 0; i < ex.Errors.Count; i++)
{
MessageBox.Show("Index #" + i.ToString() + ""
+ ex.Errors.Source + ""
+ "Error: " + ex.Errors.Message,
"Error No. " + ex.Errors.NativeError.ToString());
}
}
private void Form1_Load(object sender, EventArgs e)
{
Sync();
DeleteDB();
if (DbDotNetCFDataSetUtil.DesignerUtil.IsRunTime())
{
// TODO: Delete this line of code to remove the default AutoFill for 'dbDotNetCFDataSet.JobLists'.
this.jobListsTableAdapter.Fill(this.dbDotNetCFDataSet.JobLists);
}
}
}
}
I have created a merge replication correctlly( I suppose, there were no errros)
Please help
Your help will be appriciated
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Aug 10, 2007
Hello Everyone,
I'm trying to connect to Desktop SQL Server 2000 from Windows mobile PC Emulator (VS 2005). I need a direct connection using connection string to SQL Server 2000 through local wireless network without IIS.
Bellow is the code that I use. After executing this code I get an error on line Conn.Open(). Error says SQL Server does not exist or access denied.
SQL is un and running, and I can log in using SA username from the desktop. Even if I chance IP for another SQL server in my connection string I still get the same error. There is no firewall of any kind running.
Dim connectionSTR As String = "Persist Security Info=False;Integrated Security=False;Server=192.168.0.202,1433;initial catalog=MyDB;user id=sa;password=;"
Dim Conn As SqlConnection
Conn = New SqlConnection(connectionSTR)
Conn.Open()
If Conn.State = ConnectionState.Open Then
MessageBox.Show("Open")
End If
About my environment: SQL Server 2000 is running on Desktop PC with Windows XP SP2. Application which I need to connect to SQL Server is in Visual Studio 2005. I execute the application in Windows Mobile PC Emulator and try to connect to SQL Server from emulator.
Your advice and help is very appreciated
Thank you
Ika
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Feb 26, 2008
I'm attempting to use RDA to synchronize a pocket pc emulator with SQL Server 2005 database by following tutorial http://msdn2.microsoft.com/en-us/library/aa454892.aspx, which uses AdvWorksMobile database that comes with SQL Server 2005.
When get to testing of "To test application features " ( step 4 of the merge replication setup lab ), I am receiving SQLCe Exception errors.
ORIGINALLY, I was able to deploy an application and view the local database on the emulator, but once I clicked "InitSinc" button, I received an error.
"Failure to connect to SQL Server with provided connection information. SQL Server does not" exist, access is denied because the SQL user is not a valid user on the SQL Server, or the password is incorrect.
Found this error listed in Server Agent Errors log http://technet.microsoft.com/en-us/library/ms172357.aspx, but it wasn't very helpful since it doesn't provide any suggestions on fixing the problems.
I am brand new to SQL CE Server , mobile programming and .NET framework in general so please bare with me
All the connections / security settings, etc that were set up were taken from a tutorial so I am not sure what SQLCeServer is complaining about. Reading up on the error on the web didn't help, it all pointed to making sure that the snapshot folder had correct permissions set up. I verified that MACHINENAMEUISR_MACHINENAME guest user had Read rights to the database so I don't think that piece is the problem. Otherwise ,Merge publication has been setup in Microsoft SQL Server Management Studio by following the tutorial.
I am trying to run this sync on my home pc so there should be no issues with any user permissions
I have IIS installed
I did NOT have SQL Server Agent running in management studio at this time
I am trying to run this tutorial on an XP machine, which is my regular home PC so I dont think there are any special networking settings to consider
I am able to hit http://localhost/AdvWorksMobile/sqlcesa30.dll from my pc OK, but when I try to hit it from a cradled emulator ( after replacing "localhost" with "MACHINE_NAME" ), Internet Explorer on the emulator gives me a "Cannot Connect With Current Settings" error message. This part wasn't part of tutorial but decided so not sure if I am supposed to be able to hit it from my emulator..so I am not sure if the fact that I can't hit it is related to the problem.
AFTER STARTING SQL SERVER AGENTin Microsoft SQL Server Management Studio, I killed the application, and after relaunching it, it hits "The Specified table does not exist [Vendor]" error. This time it doesn't even launch first - that is I dont even get to pressing "InitSinc" button. Debugger is showing that this error is hit on the following line in AdvWorksMobile.AddWorksDataSetTableAdapters
int returnValue = this.Adapter.Fill(dataTable);
I am not sure why the errors changed on me after starting SQL Server Agent.
What can I do to fix this connection problem?
Thank you so much for your help!
Irina
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Feb 25, 2008
I am trying to upgrade SQL Server Express 2005 Report Server to SQL 2005 Standard and it fails with the following error:
SQL Server Setup did not have the administrator permissions required to copy a file: C:Program FilesMicrosoft SQL ServerMSSQL.8Reporting ServicesReportServer
ssrvpolicy.config. To continue, verify that the file exists, and either grant administrator permissions to the account currently running Setup or log in with an administrator account. Then run SQL Server Setup again.
After I click OK on the message, this whole path where the upgrade is bieng installed dissapears C:Program FilesMicrosoft SQL ServerMSSQL.8Reporting Services. The error is a bit missleading because the file that it is trying to copy rssrvpolicy.config does appear in that upgrade folder so I am not sure why it would try to copy a file that has already been copied.
I was able to upgrade the Database Engine instance fine but can't upgrade Reporting Services due to that error. I have verified that the account that ran the setup had the administrator permissions. Your prompt reply to my question would be greatly appreciatted.
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Jul 9, 2006
Hi everyone,I am trying to connect to SQL Server 2005 Express with Advanced Services from Visual Studio 2005 Standard Edition. I have SQL Server 2005 Standard Edition but it took up so much space and resources on my computer that I didn't want to put it back on there. So I put the SQL Express on there and while the Management Studio application connects just fine, VS 2005 will not. Oddly enough, VS 2005 connected just fine to SQL 2005 Standard. I have enabled shared memory, named pipes and TCP/IP. I have set up SQL Express to accept remote connections on named pipes and TCP/IP. And I have tried running SQL Express as the Local System Account, as a Local Service and as a Network Service. Nothing. I have tried feeding the Server Name is the Data Connections dialog in Visual Studio my SQL Express instance as (local)/SQLEXPRESS, localhost/SQLEXPRESS, and {computername}/SQLEXPRESS where {computername} is the name of my local computer which SQL Express is (allegedly) running on. And I cannot get the list of databases on that server.There is probably something very simple that I have left out. Can anyone see what it is?Thanks!
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Jul 23, 2007
I have a SQL Server 2005 evaluation that has already been installed and setup on a server. I believe it originally had a 180 day eval. There have been numerous databases and users added as well as maintenance plan created...
The eval was put on the machine as an interim solution while waiting for paper work and order processiing things to happen. All the paperwork and ordering... have been completed and I now have the real SQL Server 2005 Standard Edition license key ....
I am very new to SQL Server and need to determine ...
1. Can I update the eval copy to become permanently licensed?
2. Would I want to upgrade the eval to permanent? Will I lose any capabilities by keeping the current eval setup?
If it is reasonable to keep the eval setup
3. How do I go about entering the license key to make it permanent?
If it is necessary to install the new Standard Edition...
4. How do I install it while maintaining the already defined databases, data, users, maintenance plan...
Thanks in advance for any and all help.
Chris
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Mar 24, 2007
Hello,If I backup and restore an express database to sql server 2005 standard, will there still be limitations in regards to the database size, cpu...etc.? Thanks,Jon
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Sep 30, 2007
I need to install SQL Server 2005 Standard Edition on a new Windows Server 2003 machine that has SQL Server 2005 Express Edition installed by a backup application (Backup Exec). Will I need to uninstall the express edition in order to install the standard edition? Can the two coexist as separate instances or will the standard edition installation simply upgrade the express installation?
Thanks
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Sep 16, 2007
Hi:
When I try and connecto to SQL CE I always get an invalid operation exception. I"m afraid that I did not follow the proper install for Orcas Beta 2. I can't remember if I was supposed to uninstall SQL Mobile 2005 first or not.
All I know is when I try and use my SQL CE I can't connecto to a DB / sdf file ?
Any help would be appreciated I"m just starting to use SQL CE.
thanks
mark
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Oct 7, 2015
I have created two user defined functions for encryption and decryption using passphrase mechanism. When I call encryption function, each time I am getting the different values for the same input. While I searching a particular value, it takes long time to retrieve due to calling decryption function for each row.
best way to encrypt and decrypt using user defined functions.Below is the query which is taking long time.
SELECT ID FROM table WITH (NOLOCK)
                    WHERE dbo.DecodeFunction(column) = 'value'
When I try to use symetric or asymetric encryption, I am not able to put "OPEN SYMETRIC KEY" code in a function. So, I am using PassPhrase mechanism.
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Mar 21, 2007
I have SQL Express 2005 with Advanced Services on a development box that I also want to have installed side-by-side with SQL Server 2005 Standard Edition so I can develop apps using either edition based on the features I need (or don't need). From what I understand from sifting through other posts is that side-by-side installs of these two editions is supported and I should setup a named instance for each edition (SQLEXPRESS for the express edition and MSSQLSERVER for the standard edition). Is this setup accurate or is there another/better way?
Also, does anybody know if side-by-side installations of Reporting Services is also supported? If I install SQL Server 2005 Standard Edition with Reporting Services, will there be two different report servers running in IIS? Since there are different features in Reporting Services between the two editions, I'm not sure how side-by-side installations will effect one another.
Thanks in advance for any help,
Tony
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Apr 3, 2006
hi,
I have developed an application in c#.net 2.0 for Pocket PC. And even i developed a webservice to communicate between sql server 2005 and sql mobile 2005. Webservice returns the data in a dataset format from sql server 2005, but while inserting the data row by row from dataset, it is taking a huge amount of time. I would like to know, is there any way where i can copy the bulk data from dataset into the sql mobile 2005 using c#.And how this can be achieved.
Thank you
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Oct 17, 2007
Hello,
There has been a sudden loss of data in some (not all) of the tables in my database. I am using SQL Sever 2005 Standard with a simple recovery model for a single database. I can't find any specific hints in the logs to explain the loss, and this did not occur during a backup or scheduled maintenance routine. It seems the data just vanished at a specific point this morning, and I am not able to find out why. Do any of you have a suggestion that would help explain the loss of data in specific tables and not others in a given database without the known use of ROLLBACK or DELETE? Or do any of you know a way that I can look back in the server to identify what may have happened? Any help would be appreciated.
Thanks,
Billy
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Jun 11, 2008
I am having a problem with some code I have in a DLL that is running in SQL Server 2005. I am trying to get some RSA encryption and decryption. The encrypt code runs in SAFE mode without a problem. The decrypt code gets and error:
Msg 6522, Level 16, State 1, Line 1
A .NET Framework error occurred during execution of user-defined routine or aggregate "March_CryptoDecrypt":
System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.KeyContainerPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
System.Security.SecurityException:
at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet)
at System.Security.CodeAccessPermission.Demand()
at System.Security.Cryptography.RSACryptoServiceProvider.ImportParameters(RSAParameters parameters)
at System.Security.Cryptography.RSA.FromXmlString(String xmlString)
at Crypto.DoCrypto.Decrypt(String P_text, String P_privateKey)
at SQLServerCrypto.Decrypt(SqlString P_text, SqlString P_privateKey)
Here is the decrypt code:
static public string Decrypt(string P_text, string P_privateKey)
{
string retStr;
string encryptedBlock = "";
string localTextStr = P_text;
int numberOfBlocks;
RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider();
rsaProvider.FromXmlString(P_privateKey);
Queue<string> encryptedBlocks = new Queue<string>();
while (localTextStr.Length != 0)
{
if (rsaProvider.KeySize == 1024)
{
encryptedBlock = localTextStr.Substring(0, localTextStr.IndexOf("=") + 1);
encryptedBlocks.Enqueue(encryptedBlock);
localTextStr = localTextStr.Remove(0, encryptedBlock.Length);
}
else
{
encryptedBlock = localTextStr.Substring(0, localTextStr.IndexOf("==") + 2);
encryptedBlocks.Enqueue(encryptedBlock);
localTextStr = localTextStr.Remove(0, encryptedBlock.Length);
}
}
encryptedBlocks.TrimExcess();
numberOfBlocks = encryptedBlocks.Count;
retStr = "";
for (int cnt = 1; cnt <= numberOfBlocks; cnt++)
{
encryptedBlock = encryptedBlocks.Dequeue();
retStr +=
ASCIIEncoding.ASCII.GetString(rsaProvider.Decrypt(
Convert.FromBase64String(encryptedBlock), false));
}
return (retStr);
}
Here is the encrypt code that works:
static public string Encrypt(string P_text, string P_publicKey)
{
string retStr;
RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider();
rsaProvider.FromXmlString(P_publicKey);
int numberOfBlocks = (P_text.Length / 32) + 1;
char[] charArray = P_text.ToCharArray();
byte[][] byteBlockArray = new byte[numberOfBlocks][];
int incrementer = 0;
for (int cnt = 1; cnt <= numberOfBlocks; cnt++)
{
if (cnt == numberOfBlocks)
{
byteBlockArray[cnt - 1] =
ASCIIEncoding.ASCII.GetBytes(charArray, incrementer, charArray.Length - incrementer);
}
else
{
byteBlockArray[cnt - 1] =
ASCIIEncoding.ASCII.GetBytes(charArray, incrementer, 32);
incrementer += 32;
}
}
retStr = "";
for (int cnt = 0; cnt < byteBlockArray.Length; cnt++)
{
retStr += System.Convert.ToBase64String(
rsaProvider.Encrypt(byteBlockArray[cnt], false));
}
return (retStr);
}
I do not see why the encrypt can run is safe mode and the decrypt can not. Does anyone have any ideas?
Thank You,
David Demland
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Jun 20, 2006
Hi All,Does any body know how to use encryption in sql server 2005.Is itpossible to encrypt a particular column in a table.thanks
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Aug 28, 2007
If I understand all the posts/documentation correctly am I correct in saying that sql server will not send a symmetric key outside of database.
For Eg can I use ADO.Net to get the key from database into a C# application to do encryption/decryption in the C# application outside of database. I want the C# application to be able to encrypt/decrypt data using .Net cryptography api's but use sql server as key store in addition to encryption/decryption.
thanks for the help
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Jun 15, 2006
I am migrating a pocket PC application from VS 2003 to VS 2005 and a few weeks ago I hit the following problem when replicating
A SQL Mobile DLL could not be loaded. Reinstall SQL Mobile. [ DLL Name=sqlceca30.dll]
Scanning forums for help I saw that other people had had this problem and one
http://www.eggheadcafe.com/aspnet_answers/NETFrameworkCompactFramework/Feb2006/post25814466.asp
suggested that this problem could be circumvented by getting the replication object early and then continuously using the same object for subsequent replications.
I did this and it works a lot better now but ever so often I get another error which is
Native Error 28559 SQL Mobile encountered problems when opening the database
My only option at this point is to stop and start the application which cures the problem.
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Sep 28, 2006
I'm seeking suggestions on how to go about encrypting a database connection string in the compact framework. It's something that I thought would be relatively straight forward as I've accomplished it without much difficulty in the full framework, but I'm stuggling to find a solution.
I've been trying to implement a solution using public/private key asymmetric encryption using the RSA provider. I've essentially been trying to encrypt the connection string once on my development machine so that I can include both the encrypted connection string value and public key in either code or an external file. I'd then keep the private key out of harms reach. The problem I've encountered in doing this is that that RSA provider seemingly only allows new "in session" keys to be generated and I can't figure out a way of importing a public key from a file or other similar means.
I found the following code which is meant to allow a key to be retrieved from a signed assembly or an SNK file, which I've converted to VB but haven't been able to get working:
http://www.topxml.com/-NET-XML-System-XML/re-2963_Get-RSA-Public-key-from-Assembly-or-SNK-File.aspx
After the code seems to successfully prepare the CspParameters from an SNK files, I get an unspecified error when executing ImportParameters on the RSA provider.
I'd imagine this to be a common requirement, but haven't been able to find much information specific to the compact framework on the web. Any guidance would be much appreciated.
Thanks,
Steve
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Aug 13, 2007
Hello,
I have been unable to create a replication from an SQL Server 2005 standard edition database to remote SQL Server 2005 Express Edition. The remote express edition is on a Virtual Private Server we are leasing from a hosting company. The name of the remote DB is similar to vs572.si-vs572.com. I can connect to this with SQL server authentication through Management Studio and also with SSIS. But, I have been unable to create a push subscription (I have tried a test push subscription with the same publication to a local SQL Express server here in our office and this works fine).
Here is the error message: SQL Server Replication requires the actual server name to make a connection to the server. Connections through server alias, IP address, or any other alternate name are not supported. Specify the actual server name, 'VS572SQLEXPRESS'.
The hosting company had originally installed a shared SQL server which would not support replication. They then installed SQL Express edition and I was hoping this would allow us to run a replication.
I tried to connect to VS572SQLEXPRESS with out any luck. I check the remote connections, made sure replication was installed, etc., but no luck.
Any help would be greatly appreciated!
Thank you,
Albert
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Sep 12, 2007
I have a windows forms application that runs on my PC that populates a SQL Server Compact 2005 database and then transfers that .sdf file to my mobile device. The communication between the mobile device and PC is done using the Desktop RAPI class from OpenNetCF (http://www.opennetcf.com/FreeSoftware/DesktopCommunication/tabid/90/Default.aspx)
Anyway, I was previously using SQL Server Mobile 2005 and my populated .sdf was around 1.7 MB and I could transfer it to my mobile device in a minute. Once I switched to SQL Server Compact 2005, the transfer process began taking 3 minutes with a 1.5 MB .sdf file. The SSCE also got bloated more easily so I added in the Compact operation each time after I fully populate the SDF to keep the file size at 1.5 MB, but even then it still takes 3 minutes.
I've done a few tests where I simply switch between the two database versions and that simple switch of the version changes the transfer time. I am dumbfounded trying to figure out what the cause might be. Since it is just a file transfer, why would the version even matter unless somehow SSCE is really not compacting and lying about its actual size.
Has anyone run into anything similar to this or may have any ideas what might be going on?
Thanks.
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