Dr. Dobb's Journal - October 2008 - (Page 41) D10weis_p5db 8/15/08 9:40 AM Page 41 Bob entered his password only on the identity provider website, and never on the consumer website. The user’s password is not shared with the consumer and only needs to be submitted once by users to the identity provider, preferably over a secure connection. Benefits OpenID provides several benefits to users and developers. Users only need to remember one username (their identity URI) and password to access multiple applications. With a simple cookie and Remember Me checkbox, an OpenID identity provider can act as a convenient Single Sign-On (SSO) solution for someone who uses multiple OpenID consumers. OpenID identity providers are responsible for the authentication of users, giving web developers one less thing to understand, implement, and maintain, and letting them focus on core business. Supporting OpenID removes a barrier to entry for many potential users who balk at yet another website asking them to sign up. It’s not uncommon for web apps to offer OpenID support as an alternative to traditional authentication methods, but letting experts handle password security reduces the risk of accounts being compromised. Issues But there is a chicken-and-egg problem: Many website developers choose not to support OpenID because there aren’t enough users who understand or use it—and many users don’t understand or use OpenID because few websites support it. However, OpenID support and adoption appears to be growing, and there is a growing base of web users who prefer OpenID to traditional authentication. There are potential risks associated with OpenID as well, such as losing the “keys to the kingdom.” If an OpenID password is compromised, a user’s online identity and any data on consumer websites may also be compromised. For this reason, I recommend you choose an identity provider you trust, or configure your own identity provider. Also, users who use October 2008 l www.ddj.com l Dr. Dobb’s Journal 41 http://www.accusoft.com/ddj http://www.accusoft.com/ddj http://www.ddj.com
Table of Contents Feed for the Digital Edition of Dr. Dobb's Journal - October 2008 Dr. Dobb's Journal - October 2008 Contents Friday Night Fish Fry Alia Vox Developer Diaries Developer’s Notebook Is Your Next Language COBOL? Conversations Safe Coding Practices Code Signing in Adobe AIR OpenID Single Sign-On The Book Cipher Algorithm Indexing and Searching Image files Extending Continuous Integration Into ALM The Agile Edge Effective Concurrency Swaine’s Flames Dr. Dobb's Journal - October 2008 Dr. Dobb's Journal - October 2008 - (Page Bellyband1) Dr. Dobb's Journal - October 2008 - (Page Bellyband2) Dr. Dobb's Journal - October 2008 - Dr. Dobb's Journal - October 2008 (Page Cover1) Dr. Dobb's Journal - October 2008 - Dr. Dobb's Journal - October 2008 (Page Cover2) Dr. Dobb's Journal - October 2008 - Dr. Dobb's Journal - October 2008 (Page 1) Dr. Dobb's Journal - October 2008 - Dr. Dobb's Journal - October 2008 (Page 2) Dr. Dobb's Journal - October 2008 - Dr. Dobb's Journal - October 2008 (Page 3) Dr. Dobb's Journal - October 2008 - Contents (Page 4) Dr. Dobb's Journal - October 2008 - Contents (Page 5) Dr. Dobb's Journal - October 2008 - Friday Night Fish Fry (Page 6) Dr. Dobb's Journal - October 2008 - Friday Night Fish Fry (Page 7) Dr. Dobb's Journal - October 2008 - Friday Night Fish Fry (Page 8) Dr. Dobb's Journal - October 2008 - Friday Night Fish Fry (Page 9) Dr. Dobb's Journal - October 2008 - Alia Vox (Page 10) Dr. Dobb's Journal - October 2008 - Alia Vox (Page 11) Dr. Dobb's Journal - October 2008 - Developer Diaries (Page 12) Dr. Dobb's Journal - October 2008 - Developer Diaries (Page 13) Dr. Dobb's Journal - October 2008 - Developer’s Notebook (Page 14) Dr. Dobb's Journal - October 2008 - Developer’s Notebook (Page 15) Dr. Dobb's Journal - October 2008 - Is Your Next Language COBOL? (Page 16) Dr. Dobb's Journal - October 2008 - Is Your Next Language COBOL? (Page 17) Dr. Dobb's Journal - October 2008 - Is Your Next Language COBOL? (Page 18) Dr. Dobb's Journal - October 2008 - Is Your Next Language COBOL? (Page 19) Dr. Dobb's Journal - October 2008 - Conversations (Page 20) Dr. Dobb's Journal - October 2008 - Conversations (Page 21) Dr. Dobb's Journal - October 2008 - Conversations (Page 22) Dr. Dobb's Journal - October 2008 - Conversations (Page 23) Dr. Dobb's Journal - October 2008 - Safe Coding Practices (Page 24) Dr. Dobb's Journal - October 2008 - Safe Coding Practices (Page 25) Dr. Dobb's Journal - October 2008 - Safe Coding Practices (Page 26) Dr. Dobb's Journal - October 2008 - Safe Coding Practices (Page 27) Dr. Dobb's Journal - October 2008 - Safe Coding Practices (Page 28) Dr. Dobb's Journal - October 2008 - Safe Coding Practices (Page 29) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 30) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 31) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 32) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 33) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 34) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 35) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 36) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 37) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 38) Dr. Dobb's Journal - October 2008 - Code Signing in Adobe AIR (Page 39) Dr. Dobb's Journal - October 2008 - OpenID Single Sign-On (Page 40) Dr. Dobb's Journal - October 2008 - OpenID Single Sign-On (Page 41) Dr. Dobb's Journal - October 2008 - OpenID Single Sign-On (Page 42) Dr. Dobb's Journal - October 2008 - OpenID Single Sign-On (Page 43) Dr. Dobb's Journal - October 2008 - OpenID Single Sign-On (Page 44) Dr. Dobb's Journal - October 2008 - OpenID Single Sign-On (Page 45) Dr. Dobb's Journal - October 2008 - The Book Cipher Algorithm (Page 46) Dr. Dobb's Journal - October 2008 - The Book Cipher Algorithm (Page 47) Dr. Dobb's Journal - October 2008 - The Book Cipher Algorithm (Page 48) Dr. Dobb's Journal - October 2008 - The Book Cipher Algorithm (Page 49) Dr. Dobb's Journal - October 2008 - The Book Cipher Algorithm (Page 50) Dr. Dobb's Journal - October 2008 - The Book Cipher Algorithm (Page 51) Dr. Dobb's Journal - October 2008 - Indexing and Searching Image files (Page 52) Dr. Dobb's Journal - October 2008 - Indexing and Searching Image files (Page 53) Dr. Dobb's Journal - October 2008 - Indexing and Searching Image files (Page 54) Dr. Dobb's Journal - October 2008 - Indexing and Searching Image files (Page 55) Dr. Dobb's Journal - October 2008 - Extending Continuous Integration Into ALM (Page 56) Dr. Dobb's Journal - October 2008 - Extending Continuous Integration Into ALM (Page 57) Dr. Dobb's Journal - October 2008 - Extending Continuous Integration Into ALM (Page 58) Dr. Dobb's Journal - October 2008 - Extending Continuous Integration Into ALM (Page 59) Dr. Dobb's Journal - October 2008 - Extending Continuous Integration Into ALM (Page 60) Dr. Dobb's Journal - October 2008 - Extending Continuous Integration Into ALM (Page 61) Dr. Dobb's Journal - October 2008 - Extending Continuous Integration Into ALM (Page 62) Dr. Dobb's Journal - October 2008 - Extending Continuous Integration Into ALM (Page 63) Dr. Dobb's Journal - October 2008 - The Agile Edge (Page 64) Dr. Dobb's Journal - October 2008 - The Agile Edge (Page 65) Dr. Dobb's Journal - October 2008 - The Agile Edge (Page 66) Dr. Dobb's Journal - October 2008 - The Agile Edge (Page 67) Dr. Dobb's Journal - October 2008 - Effective Concurrency (Page 68) Dr. Dobb's Journal - October 2008 - Effective Concurrency (Page 69) Dr. Dobb's Journal - October 2008 - Effective Concurrency (Page 70) Dr. Dobb's Journal - October 2008 - Effective Concurrency (Page 71) Dr. Dobb's Journal - October 2008 - Swaine’s Flames (Page 72) Dr. Dobb's Journal - October 2008 - Swaine’s Flames (Page Cover3) Dr. Dobb's Journal - October 2008 - Swaine’s Flames (Page Cover4)
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