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WEB401 Security Practices for Web Services (Part 2) Keith Ballinger Program Manager XML Messaging Microsoft Corporation.

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Presentation on theme: "WEB401 Security Practices for Web Services (Part 2) Keith Ballinger Program Manager XML Messaging Microsoft Corporation."— Presentation transcript:

1 WEB401 Security Practices for Web Services (Part 2) Keith Ballinger Program Manager XML Messaging Microsoft Corporation

2 Agenda Trusting clients and services Enabling a manageable B2B infrastructure Creating a security context Faster security performance Authoring security policy Removing the need for writing a lot of security code

3 Trust Relationships and identity How do I prove who I am? Who can vouch for me? How do you know you can trust him? These questions are answered with signed security tokens WS-Trust defines a protocol for issuing and obtaining security tokens

4 Trust Several models for issuing tokens Client obtains token Service obtains token for client Etc… Client Token Issuer Service ClientService Token Issuer 2 Token Issuer 1 Client Token Issuer Service

5 Trust Requesting a security token (RST)... Issuing a security token (RSTR)

6 Trust RST is usually signed with a token the token issuer trusts RSTR issues new token Proof of possession token can also returned This token includes a key that the requestor can use to prove he’s allowed to use the issued token

7 Issuing a custom XML-based security token demo demo

8 Secure conversation Token issuing can also occur between two parties Client Service And Token Issuer Typically, this is done to create higher performance security processing WS-SecureConversation is an example

9 Secure conversation WS-SecureConversation details how to issue a SecurityContextToken In WSE, this lightweight token takes the place of a more processing intensive token Client Service And Token Issuer Request for SCT SCT Issued to client Series of messages signed with issued SCT

10 Building a Secure Conversation with WSE demo demo

11 Policy Beyond what WSDL provides, what else is needed to describe a Web service? Security requirements Reliable messaging assurances Protocol versioning Etc… These other attributes of a service can be described with WS-Policy XML-base language Complex:,, etc…

12 Policy { "@context": "http://schema.org", "@type": "ImageObject", "contentUrl": "http://images.slideplayer.com/14/4254111/slides/slide_12.jpg", "name": "Policy ", "description": "Policy ", "width": "800" }

13 Security policy WS-SecurityPolicy specifies the assertions for expressing requirements related to WS- Security Can be embedded inside the other two

14 Security Policy X509v3 wsp:Body()

15 Role-based security IPrincipal is the.NET interface for role- based authoriztion bool IsInRole(String str) SecurityToken.Principal Implementation of IPrincipal Automatically set for UsernameToken and KerberosSecurityToken Call method explicitly or use Policy

16 Role-Based Authorization using Security Policy demo demo

17 Suggested Reading And Resources The tools you need to put technology to work! TITLE Available Writing Secure Code, Second Edition:0-7356-1722-8 Today Microsoft Press books are 20% off at the TechEd Bookstore Also buy any TWO Microsoft Press books and get a FREE T-Shirt

18 Community Resources http://www.microsoft.com/communities/default.mspx Most Valuable Professional (MVP) http://www.mvp.support.microsoft.com/ Newsgroups Converse online with Microsoft Newsgroups, including Worldwide http://www.microsoft.com/communities/newsgroups/default.mspx User Groups Meet and learn with your peers http://www.microsoft.com/communities/usergroups/default.mspx

19 evaluations evaluations

20 © 2003 Microsoft Corporation. All rights reserved. This presentation is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, IN THIS SUMMARY.


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