Application data microsoft cardspace

Edit the App. In the left pane, add a new binding configuration to the Bindings folder. Select the wsFederationHttpBinding binding type. You can also use claims-based security with the wsHttpBinding binding, but that binding supports only a limited set of claims.

The wsFederationHttpBinding binding enables you to configure the service to specify a more extensive range. Click the New button at the bottom of the right pane. The claims specified in the ClaimTypes property of the binding configuration constitute the claims security policy for the service.

You can add multiple claim types if you want to identify users based on more than one piece of information. However, you are not restricted to this set of claims.

A key objective of the WCF claims-based security model is that it is extensible and interoperable with systems developed by using other technologies. You can make use of claim types supported by identity providers other than Windows CardSpace, you just need to know the URI that identifies the claim types you want to use. A WCF service uses the IssuedTokenType property to specify the type of token it expects to receive from the identity provider containing the claim information identity providers can send tokens conforming to a number of different standard formats.

A fundamental requirement of solutions based on Windows CardSpace is that client applications must be able to verify the identity of the Web service requesting the claim and the Web service must be able to trust the identity provider verifying the claim. This means that you should configure the requesting Web service with a certificate and provide the client application with a reference to this certificate.

If you are using a third-party identity provider, it must also supply a certificate that the client application and Web service can use to confirm its identity the identity provider signs tokens with its private key, so the Web service must have access to its public key in order to verify their signatures. Additionally, all messages must be encrypted, either at the message level or at the transport level. In the left pane, add a new service behavior to the Service Behaviors folder in the Advanced folder.

Name this behavior ShoppingCartServiceBehavior. In the left pane, expand the new serviceCredentials node, and click the serviceCertificate node. In this exercise, you are using an unverifiable self-issued information card rather than a card issued by a third-party identity provider.

At run time, the SAML token containing the claim token is provided by the Windows CardSpace service running on the client application computer.

Therefore, you need to configure the Web service to accept SAML tokens from an untrusted source the user running the client application and who has issued the card to herself. In the left pane, click the issuedTokenAuthentication node under the serviceCredentials node. In the left pane, select the ShoppingCartService. ShoppingCartServiceImpl service in the Services folder. In the left pane, add a new endpoint to the Endpoints folder under the ShoppingCartService.

ShoppingCartServiceImpl service. Set the properties of this endpoint using the values in the following table:. Open table as spreadsheet Property. You can use the email address to authorize the user and grant or deny them access to specific operations. You can perform this task in a variety of ways.

The most direct technique is to explicitly examine the value of the claim in the token passed to the service, which is what you will do in the next exercise. Security; using System. Claims; using System. This array contains the email addresses of the users that the service will allow to access the service. This code is for testing purposes only. In a production environment, you should consider storing the details of authorized users in a database rather than using a hard-coded array of strings.

Add the following private method to the ShoppingCartServiceImpl class to determine whether the claimset in the token passed to the service contains an email claim with an email address that corresponds to one of the authorized users:. FindClaims ClaimTypes. Email, Rights. Compare emailClaim. When the WCF runtime for the service receives the tokenized claims from the client application, it matches the values for these claims against the security policy that it implements.

The AuthorizationContext property of the service security context contains the results of this match. In this case, AuthorizationContext property should contain an email address claim with the email address provided by the information card sent by the client application. The AuthorizationContext property comprises a collection of claimsets, and each claimset contains a collection of claims. This method iterates through each claimset looking for an email claim.

If it finds one, it examines the value of the claim and compares it to each email address in the list of authorized users.

Notice that the value of a claim is available through the Resource property. The type of this property is Object, and its contents are dependent on the type of the claim. An email claim is a string containing the authenticated email address of the user, so this method simply performs a case-insensitive string comparison. If the email address in the claim matches one of the authorized users, the authorizeUser method returns true , otherwise it returns false.

At the start of the method, add a block of code that calls the authorizeUser method and throws a security exception if the user is not an authorized user, like this:. Implementing Custom Authorization If you need to perform more extensive authorization checks than those shown in the exercise, the. NET Framework, which simplifies and improves the safety of shared resources and personal information on the Internet. It helps developers to build Software and Web sites which are more secured to the most commonly identity-related attacks such as phishing.

This technology helps to solve the problems of traditional online security mechanisms by reducing reliance on user names and passwords Read more.

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That enables us to use it a lots places at practical world like we can store a coordinates of graphs etc. This article explain you about the Namespace in C. Browser-based applications are natural candidates for integrating with Windows CardSpace authentication.

Web services can also require Windows CardSpace authentication such that client applications invoke Windows CardSpace to issue security tokens in a similar way.

This generates a security policy for the service, included in the Web Service Description Language WSDL document that indicates it requires personal tokens. Client applications use this proxy to construct a channel to call the service, and the proxy handles calls to Windows CardSpace to gather a security token satisfying the claims of the target service.

The resulting interaction looks much like that in Figure 3 , where the RP is the Windows Communication Foundation service instead of a Web application, and the client application is the Windows Communication Foundation client and proxy instead of a browser.

The IP can be Windows CardSpace, which implies a personal or managed card must be supplied to find the appropriate IP to issue the actual token. The IP can also be explicitly configured, which means that the token request does not go through Windows CardSpace. For the purpose of this discussion I'll focus only on the Windows CardSpace configuration. You must specify an issuer, a token type, and a list of required or optional claims.

The issuer must be set to schemas. The claims can likewise be personal or managed claims. These settings will determine whether a personal or managed card can satisfy the request for a security token. In this case, SAML 1. By default this setting is false. However, it must be set to true for personal cards since the resulting token is signed with an unknown private key.

For managed cards, this isn't required since the service will likely install the public key of any IP you accept into the Trusted People certificate store. In the case of managed cards, the signature of the issued token is checked against this list of trusted public keys. Custom authorization options also exist. The generated client configuration used to initialize the proxy is equivalent to the service configuration with a few exceptions.

The client requires access to the service public key to encrypt the token and its communications to the service. This configuration is shown in Figure The client proxy is initialized with this information when constructed and uses it to determine how to acquire the security token to authenticate to the service. In fact, the actual code to invoke the service can be as simple as this:. Windows CardSpace is triggered by Windows Communication Foundation at the client because the issuer setting tells it to use the personal token provider.

The user is presented with the identity selection interface with only cards satisfying the required claims in the binding presented. Managed cards are required when the token type or required claims cannot be satisfied by personal cards.

Unlike with ASP. Before the service operation is invoked, this security token is decrypted and validated, and its claims extracted into the service security context. These extracted claims are added to an abstraction known as a ClaimSet, which contains the list of claims and information about the issuer of the claims.

In the case of personal cards, the claims are self-issued, which means that you won't be authorizing the public key of the issuer. That's why it is important to associate the card's PPID claim which is unique and kept secret with an account in the system. You can check the claim sets attached to the AuthorizationContext and look for a PPID claim to find a match, and then check the values of other expected claims for further authorization, as shown in Figure The code in Figure 17 checks for PPID and date-of-birth claims from any ClaimSet-assuming that the token was issued by a personal card-then checks for a date-of-birth claim to verify the age of the caller.

One or more sets of claims may be attached to the AuthorizationContext as different security tokens are extracted from the message and processed by service authorization policies. If the issuer is known and can be identified, it would be possible to select the correct ClaimSet from a particular issuer before processing claims. Managed cards yield an extended set of possibilities since the claims have an identifiable issuer. The issuer is also described by a ClaimSet that often includes an identity claim with the public key of the IP you accept.

You can search for an identity claim and check that it is a valid RSA claim as follows:. Once you're sure you have the right ClaimSet, you can perform claims-based security checks. For example, if the claims are based on the CRUD claims mentioned earlier, you can check for create, read, update, and delete claims for appropriate operations.

In this way, managed cards not only make it easier for a user to select his identity, but they also facilitate the generation of a rich set of claims identifying the user's rights. Service developers can focus on claims-based authorization checks instead of traditional role-based security checks.

A complete sample that illustrates claims-based security can be downloaded from msdn. NET applications and Windows Communication Foundation services improves the end-user experience by providing a simple and consistent identity selection process for authentication to trusted applications and services. While personal and managed cards provide an equivalent login experience, managed cards have the advantage of enabling an IP to supply a specific set of claims that applications and services can use to better identify the user's rights in their system.

The topics discussed in this article and implemented in the sample code for this article will help you on your way to triggering the Windows CardSpace experience from ASP. Michele contributed to the design and implementation of Windows CardSpace during its early beta stages. Reach her at www. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. In this article. NET membership.