.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Cheap 256 Bit Encryption SSL Certificate

Posted By: RapidSSLonline     Posted Date: September 08, 2011    Points: 2   Category :Networking

Sorry, The Content you are looking for is no longer available.

View Complete Post

More Related Resource Links

View State Encryption


Hi All,

Why is it that I see the same hash value generated when I use different algorithms for viewstate encryption. I have added below lines to the web.config file

<pages viewstateEncryptionMode="Always"

Cryptography: Employ Strong Encryption in Your Apps with Our CryptoUtility Component


When storing sensitive data, you need to be able to identify threats, determine how these threats interact with each other, and how issues can combine to constitute a vulnerability that will leave your data exposed. With a good understanding of the various cryptographic algorithms, salt, hashes, ACLs, and other available techniques, you'll be in a better position to protect your critical data.

Michael Stuart and J Sawyer

MSDN Magazine November 2004

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


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

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

MSDN Magazine November 2003

.NET Remoting: Secure Your .NET Remoting Traffic by Writing an Asymmetric Encryption Channel Sink


As .NET Remoting gains popularity in the enterprise space, it must meet business demands for trustworthy computing. Remoting traffic can be secured when objects are hosted in IIS, but when they aren't hosted in IIS, custom security solutions can be developed to secure them. This article provides an in-depth look at writing channel sinks for .NET. It also details the flow of data through custom channel sinks and explains the kinds of manipulations that can be performed on that data.

Stephen Toub

MSDN Magazine June 2003

Symmetric Key Encryption on the Compact Framework

There are two main types of encryption algorithms available within the .NET Compact Framework - symmetric and asymmetric encryption. This blog entry will discuss how to utilise symmetric key encryption, but first we have to outline the difference between Symmetric and Asymmetric encryption (I will discuss asymmetric key encryption in a future blog entry).

Symmetric and Asymmetric Key Encryption
Symmetric encryption algorithms (also known as ciphers) process plain text with a secret encryption key to create encrypted data (called cipher text). The same secret key is used to decrypt the cipher text back to plain text.

Asymmetric encryption (also known as public-key encryption) is a cryptography technique that uses public and private key pairs to encrypt and decrypt data respectably. The private key is a closely guarded secret, while the public key can be freely distributed over untrusted networks. You do not worry who has your public key (you could print it on a 100foot tall banner if you so desired), but you must keep your private key secret.

URL Encryption in ASP.NET


Hi Friends

URL Encryption is important in project ...

i m using following artical for URl Encryption... It is working fine for Respons.redirect();

But not working for navigate url ....

how can this problem get resolved ...

please help me out...........


----------------------------------------------------------------------------------------------------------------------------------- Parees Solutions -----------------------------------------------------------------------------------------------------------------------------------

Certificate API question - Private Key.

I am trying to follow http://msdn.microsoft.com/en-us/library/system.security.cryptography.x509certificates.x509certificate2.aspx but I am finding that the Private Key property of the certificate is always null. I created the certificate with makecert -pe -n "CN=BuySeasonsThirdParty" -r -b 08/26/2010 -e 08/26/2011 -sky exchange Amazon.cer. Then installing it on the local user store using: X509Store store = new X509Store(storeName, StoreLocation.CurrentUser); and using the same API to get the certificate from the store. The certificate that I retrieve from the store is non-null it is just the PrivateKey is null. So I can encrypt using something like: ((RSACryptoServiceProvider)cert.PublicKey.Key).Encrypt(Encoding.Unicode.GetBytes(text), true)   But since the Private Key property is NULL I cannot decrypt. Any ideas? Kevin

Encryption/Decryption OAEP

I have some code: string newKey = AmazonFeedBrowser.Security.CryptoKeyContainer.GetKeyFromContainer("KeyContainer", true); RSACryptoServiceProvider trsa = new RSACryptoServiceProvider(); trsa.FromXmlString(newKey); string tu = Convert.ToBase64String(trsa.Encrypt(Encoding.UTF8.GetBytes("Administrator"), true)); Debug.WriteLine(tu); newKey = AmazonFeedBrowser.Security.CryptoKeyContainer.GetKeyFromContainer("KeyContainer", false); trsa = new RSACryptoServiceProvider(); trsa.FromXmlString(newKey); Debug.WriteLine(Encoding.UTF8.GetString(trsa.Decrypt(Convert.FromBase64String(tu), true))); I get a cryptographic exception indicating that the OAEP padding cannot be processed. The RSACryptoServiceProvider (trsa) is initialized with just the public key. It seems to work OK with the public and private key. Is there a way to use OAEP with just the public key? Error occurred while decoding OAEP padding. System.Security.Cryptography.CryptographicException was unhandled Message=Error occurred while decoding OAEP padding. Source=mscorlib StackTrace: at System.Security.Cryptography.RSACryptoServiceProvider.DecryptKey(SafeKeyHandle pKeyContext, Byte[] pbEncryptedKey, Int32 cbEncryptedKey, Boolean fOAEP, ObjectHandleOnStack ohRetDecryptedKey) at System.Security.Cryptography.RSACryptoServiceProvider.Decrypt(Byte[] rgb, Boolean fOAEP) .

sslstream client certificate validation error

Hi,I have taken server and client program from MSDN2 for sslstream. in that code client certifiacte authetication is made false  i want to enable that and do the code i have done some modification to the code but is giving error "RemoteCertificateNotAvailable" and i think that its not getting the client certificate at server side.So please can any one help me to do client server program using sslstream in which client certificate also needs to be validated.I am attaching my modified code of MSDN2Server sideusing System;using System.Collections;using System.Net;using System.Net.Sockets;using System.Net.Security;using System.Security.Authentication;using System.Text;using System.Security.Cryptography.X509Certificates;using System.IO;namespace Examples.System.Net{    public sealed class SslTcpServer     {        static X509Certificate serverCertificate = null;        // The certificate parameter specifies the name of the file         // containing the machine certificate.        // The following method is invoked by the RemoteCertificateValidationDelegate.        public static bool ValidateClientCertificate(              object sender,              X509Certificate certificate,              X509Chain chain,              SslPolicyErrors sslPolicyErrors)        {            SslPolicyErrors errors = sslPolicyErrors;            if (errors != SslPolicyErrors.None)            {

Certificate Signing Request Tool

Hi All, Currently there is a requirement in our application for creating a SSL Certificate Signing Request (CSR) message. Is it possible to develop one on .Net Framework 3.5 Some of the websites lilke Verisign do not mention any such procedure where they say that a custom tool is available apart from OpenSSL but they basically have provided a list all the webservers where their Digital Certificates are compatible and the instructions which say how the CSR's can be generated on these web servers.  I understand that the CSR contain the Web Server's public key, organization information and a unique match for server's private key. The certificates issued by the Certifying Authority  is used for Cient/Server authentication over TCP/IP. Look forward for some replies Thanks

SSL Using Server Created Certificate

We need to secure a SQL server using an SSL certificate and I understand there are a couple of ways of doing it.  One of which is having SQL Server generate a self-signed certificate which exposes the man-in-the-middle attack vulernability.  Thus we want to avoid this approach.  My question is, can we just allow the Windows Server 2003 we are running to be configured to be a Ceriifcate Authority and ust it create an SSL certificate.  Is that just a secure as getting an SSL certificate from a third party company such as Verisign?  If it is better to go with a third party company, how do you get a certificate from them when it is not going to be used for a website? Thanks NickNick's Programming Tips

Install SQL Server2005 Error:[Native Client]Encryption not supported on the client

Product: Microsoft SQL Server 2005 -- Error 29515. SQL Server Setup could not connect to the database service for server configuration. The error was: [Microsoft][SQL Native Client]Encryption not supported on the client. Refer to server error logs and setup logs for more information. For details on how to view setup logs, see "How to View Setup Log Files" in SQL Server Books Online.

SQL Server Compact 3.5 Encryption Questions

If I create a database (.sdf file) on a server and set it to be encrypted, should it be able to be opened on a device or other PC?  In other words, is there anything in the encryption that is machine specific?  Or is it really that the password is what lets me connect and the encryption prevents it from being read by some other tool like a hex file viewer as one post suggested. I've read through lots of posts and documentation and I'm just trying to understand how encryption works and if there are any limitations or considerations and haven't found a good source. Thanks

Coldfusion AES encryption

Hi all, I saw another post on the subject but it was for a different type of encryption. Anyway, we have some values that are stored in our database using the Coldfusion ecrypt() function. We are using AES and Hex. it looks like this: <cfset Variables.THE_VALUE_ENCRYPTED = Encrypt("#ARGUMENTS.THE_VALUE#","#Variables.ENCRYPT_KEY#","AES","Hex")> The key is 24 bit.  For the life of us, we can't find any way to decrypt this in .net. Can someone offer some guidance? IT would be greatly appreciated.

connect client certificate to an account in a membership database

Hello I have created a web service that authenticates with username and password, works fine.Basically this one, http://msdn.microsoft.com/en-us/library/ff649647.aspxNow I also want to connect to this web service using client certificates, works finehttp://msdn.microsoft.com/en-us/library/cc948997.aspx But I would like to when authenticated via client certificates, connect that certificate to a user in the membership database.So that I can use Roles.IsUserInRole(...) and such.I thought that, well if I implement a Custom certificate Validatorhttp://msdn.microsoft.com/en-us/library/ms733806.aspxthen I could check for example subject and map that against a created username in the membership database.But in the class X509CertificateValidatorpublic override void Validate(X509Certificate2 certificate)I don't have the same ability as when the user is authenticatedlike  void OnAuthenticateRequest(object source, EventArgs eventArgs)HttpApplication app = (HttpApplication)source;Basically how can I do this app.Context.User = new GenericPrincipal(new GenericIdentity(username, "Membership Provider"),roles);withinpublic override void Validate(X509Certificate2 certificate)and if that is not possible, can this be solved differently?Bottom line, how do I connect a client certificate to a user account in the membership database. Is there a MSDN article

RSACryptoServiceProvider + smart card with X509 certificate = Bad Key.

Hello! I'm trying the interop with Java. The task: create  SHA1withRSA signature of the document hash with .NET CLR. The singer key is an X509 certificate from external CA, and this signer certificate is on the smart card. 1. First solution: the .NET CLR SignedCms class passes the document hash to the Windows CryptoApi (and to the smart card), and the result is a PKCS#7 message with the signature. This solution works well with smart card, but the requirement is only the "SHA1withRSA" signature of document hash, the PKCS#7  message will be created at Java side. 2. Second attempt, create only "SHA1withRSA" signature:             // choosing certificate from smart card             X509Certificate2 card = GetCertificate();             // this fails when certificate is on the smart card:             RSACryptoServiceProvider rsa = (RSACryptoServiceProvider)card.PrivateKey;             // only the signed hash needed             byte[] signedHashValue1 = rsa.SignData(documentHash, new SHA1Managed()); The problem: the car
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend