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Trustworthy Code: Exchange Data More Securely with XML Signatures and Encryption

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

You can sign any kind of data using XML Signature, including part of an XML document, other XML documents, or other data of any format. However, in practice, XML signatures are most frequently used to sign other data represented in XML. In this article, the authors discuss the new standard and how you can benefit from it in your apps.

Mike Downen and Shawn Farkas

MSDN Magazine November 2004

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Toolbox: Data Snapshots, Subversion, Source Code Organization and More


If you want to save, organize, and annotate snapshots of your database data, find an easy way to install and configure Subversion, and automate the organization of your source code, then you'll want to read more about these latest tools.

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Under the Table: How Data Access Code Affects Database Performance


In this article, the author delves into some commonly used ways of writing data access code and looks at the effect they can have on performance.

Bob Beauchemin

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Smart Storage: Protect Your Data Via Managed Code And The Windows Vista Smart Card APIs


Smart cards are a compelling alternative to the reliance on passwords, which are the weakest link in authentication systems. Get the Windows smart card programming basics here.

Dan Griffin

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Toolbox: Protecting Code, Persisting Data, and More


This month obfuscating your code, persisting your data, and a good read on SQL Server 2005.

Scott Mitchell

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Know Thy Code: Simplify Data Layer Unit Testing using Enterprise Services


If you want to employ unit testing and test-driven development techniques in your database application development process, you'll have different factors to consider than you do when you're not involving a database. For example, you have to maintain a consistent state within the database and be able to roll back transactions when necessary. This article shows you how to get the best of unit testing for your database apps in a safe, usable manner.

Roy Osherove

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Security: Manipulate Privileges in Managed Code Reliably, Securely, and Efficiently


When the author was faced with implementing support for changing a security descriptor on an object, he noticed there was not support for that operation in .NET. So he devised two solutions to the problem: the first, simpler one, is tailored to the .NET Framework 1.1 and can be used today. The second solution incorporates several advanced features available only in the .NET Framework 2.0. Both are presented here.

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Data: More Load, Less Code with the Data Enhancements of ASP.NET 2.0


A data source control is a server control that wraps some basic functions of a data source - be it a SQL Server database, an XML document, an Excel worksheet, or a sitemap description. Through the services of a similar component, data-bound controls can fetch data as well as insert new records or update and delete existing ones. Data source controls enable a consistent model across a variety of data sources and dramatically reduce the amount of code needed to implement a two-way data-binding scenario. This article provides an introduction to data source controls and other related data binding features.

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Encrypt It: Keep Your Data Secure with the New Advanced Encryption Standard


The Advanced Encryption Standard (AES) is a National Institute of Standards and Technology specification for the encryption of electronic data. It is expected to become the accepted means of encrypting digital information, including financial, telecommunications, and government data. This article presents an overview of AES and explains the algorithms it uses. Included is a complete C# implementation and examples of encrypting .NET data. After reading this article you will be able to encrypt data using AES, test AES-based software, and use AES encryption in your systems.

James McCaffrey

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Exchange 2000 WSS: Web Storage System Improves Exchange Data Accessibility


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Collaboration Data Objects: Send Microsoft Exchange Appointment Reminders to Your Pager Using CDO


Besides your typical e-mail services, Microsoft Exchange also provides the service infrastructure you need to build extensible knowledge and workflow management systems. Understanding Collaboration Data Objects (CDO) is the key to accessing these Exchange services for your own programs. With CDO you can automate tedious tasks and integrate information such as e-mail, calendars, and contacts with almost any application. This article explains how CDO enables you to access Exchange services, then walks you through a sample application that reads calendar events from an Exchange server and sends pager reminders to your users.

Sean McCormick

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Trying to run a stored procedure from vb code with oracle data provider.



Here is my SP:

create or replace
 Open p_getuserssignon_recordset1 for
 SELECT Distinct(Userid), UserPassword, SecurityLevel, ActiveStatus
WHERE substr(UserId,1,2) <> vUid
Order By UserId;

I would like to run this SP from code and fill a gridview with the result. 

I am not sure how to go about this, as I have found several different examples, other than the one I  think I need.

I am using the oracle data provider and I have an input parameter (vUid, which will equal "zz").

First question. When filling a gridview with a result set from a stored procedure should the recordset OUT be defined as a REFCURSOR (like i did above)? 


Do you have example code as to how to execute the SP and fill a gridview?  I keep trying different variations of code i've found on the internet without any success other than getting more confused.

(I am using VS 2005, VB).

Thank you.



DataGrid ValidationRule or IDataErrorInfo validation code called multiple times for each data change

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Solved: LDAP authentication: error code 49 - 80090308, comment: AcceptSecurityContext error, data 52

Hi, I have a problem conneting to another domain (far.away.domain). We have a two-way trust to this domain. Also I can access the DS using ADSI edit and our Administrator account (ourdomain.com). I tried several types of credentials (userid = "CN=Administrator,CN=Users,DC=ourdomain,DC=com", "Administrator @ ourdomain.com" (without blanks)...). Connecting to ourdomain.com is no problem, but to far.away.domain I can't connect, I always get the error 525 (user not found). What could be the problem? Have I to use an entry from the ForeignSecurityPrincipals CN of the far.away.domain? I also tried to connect using Softerra LDAPBrowser and a command line ldapsearch without succes and with not a better error message. But why is it not possible to use a trusted account, or is this a active directory feature and does not work with pure LDAP bindings? Best regards, Nils.

Adding source redirect code to end of a URL which used a dynamic data value

I'm trying to add some source redirect code to the end of a URL in a Data Form Web Part on a simple SharePoint aspx page. This is the basic url: /itservices/helpdesk/Lists/Service%20Requests/DispForm.aspx?ID={@ID} However I want to add a source redirect to the end of the URL so that it returns to a particular page rather than the list's default page. I have tried all of the following: /itservices/helpdesk/Lists/Service%20Requests/DispForm.aspx?ID={@ID}&source=/itservices/Pages/MyOverview.aspx That causes an error in the web part stating "This Web Part does not have a valid XSLT stylesheet: Error; A semi colon character was expected". I tried replacing the ampersand with the URL encoded character: /itservices/helpdesk/Lists/Service%20Requests/DispForm.aspx?ID={@ID}%26source=/itservices/Pages/MyOverview.aspx But when opening from this URL the form contains no data. What am I missing or can this not be done? Thanks.  

Data from text files, What's wrong with my code?

Hi all, I have uploaded some tab-delimited .txt files on my web site (actually run on my computer, ie localhost, for now), and now I try to retrieve the data from those files. I do this by calling a vb file containg the sub below. Everything works great, except that the sub won't recognise unicode characters. I can split the resulting string using vbnewline and vbtab, but already in the sub in question, the string doesn't understand the Swedish letters åäö, apostrophes and more. Any help would be greatly appreciated! /Pettrer       Shared Function getTextfile(ByVal FullPath As String, Optional ByRef ErrInfo As String = "") As String Dim strContents As String = "" Dim objReader As StreamReader Try objReader =New StreamReader(FullPath) 'UTF8Encoding? strContents = objReader.ReadToEnd() objReader.Close() ErrInfo = Ex.MessageCatch Ex As Exception End Try Return strContents End Function  

data contract code generation for large/complex schema (HR-XML/OAGIS) - is there an alternative?

Hello, and thank you for reading.I am implementing a Service based on a predefined specification (HR-XML 3.0). As such, I am starting with the schema, and working my way back to code. There are a number of large Schema documents (which import yet more Schema documents) related to my implementation, provided by this specification.I am able to generate code using xsd.exe, by supplying the "main" and "supporting" xsd files as arguments. But there are several issues, and I am wondering if this is the right approach.- there are litterally hundreds of classes - the code file is half a meg in size- duplicate classes (ex. Type, Type1 - which both represent the same type)- there are classes declared as inheriting from a base class, but that base class is not generated/definedI understand that there are limitations to the types of Schema supported by svcutil.exe/xsd.exe when targeting the DataContractSerializer and even XmlSerializer. My question is two-fold:1. Are code generation "issues" fairly common when dealing with larger, modular xsd files? Has anyone had success with generating data contracts from OAGIS or HR-XML schema?2. Given the above issues, are there better approaches to this task, avoiding generating code and working with concrete objects? Does it make better sence to read and compose a SOAP message directly, while sti

Exchange calender overlays getting tcp error code 10060:

while trying to overlay my exchange calendar into SharePoint 2010, I am getting this error message  https://<server>/ews/exchange.asmx. TCP error code 10060: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond <server ip>:443. Port 443 is open cause OWA is being served over it. Any ideas?        
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