Perimeter
9/24/2011
02:32 PM
Taher Elgamal
Taher Elgamal
Commentary
Connect Directly
RSS
E-Mail
50%
50%
Repost This

Identity Federation Versus PKI

Neither technology alone offers the ultimate user authentication infrastructure

This may seem to defend PKI, which is hardly the case, but it is interesting to learn from the past as we plan for the future.

PKI has been tainted over the last several years as difficult to implement and hard to build a good trust model on. These is actually mostly the result of a few choices that were made years ago without taking into consideration the practical issues.

So here comes identity federation, with the promise of solving the trust problems. However, identity federation really only works in small circles of already-known entities, as the meaning of the identity can easily map into the authentication domain. The original purpose of a PKI was to enable "a globally recognized" credential with specific attributes -- this is not easy to solve within a federated model.

Can we combine the two notions? Do we have to? The ultimate user authentication infrastructure needs to solve both the local trust issue as well as lead to a well-designed access control mechanism. Neither of these are quite achieved with a pure PKI or a federation system.

Recognized in the industry as the "inventor of SSL," Dr. Taher Elgamal led the SSL efforts at Netscape. He also wrote the SSL patent and promoted SSL as the Internet security standard within standard committees and the industry. Dr. Elgamal invented several industry and government standards in data security and digital signatures area, including the DSS government standard for digital signatures. In addition to serving on numerous corporate advisory boards, Dr. Elgamal is the Chief Security Officer at Axway, a global provider of multi-enterprise solutions and infrastructure. He holds a Ph.D. and M.S. in Computer Science from Stanford University. View more of his blog posts here.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Cartoon
Current Issue
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-2391
Published: 2014-04-24
The password recovery service in Open-Xchange AppSuite before 7.2.2-rev20, 7.4.1 before 7.4.1-rev11, and 7.4.2 before 7.4.2-rev13 makes an improper decision about the sensitivity of a string representing a previously used but currently invalid password, which allows remote attackers to obtain potent...

CVE-2014-2392
Published: 2014-04-24
The E-Mail autoconfiguration feature in Open-Xchange AppSuite before 7.2.2-rev20, 7.4.1 before 7.4.1-rev11, and 7.4.2 before 7.4.2-rev13 places a password in a GET request, which allows remote attackers to obtain sensitive information by reading (1) web-server access logs, (2) web-server Referer log...

CVE-2014-2393
Published: 2014-04-24
Cross-site scripting (XSS) vulnerability in Open-Xchange AppSuite 7.4.1 before 7.4.1-rev11 and 7.4.2 before 7.4.2-rev13 allows remote attackers to inject arbitrary web script or HTML via a Drive filename that is not properly handled during use of the composer to add an e-mail attachment.

CVE-2011-5279
Published: 2014-04-23
CRLF injection vulnerability in the CGI implementation in Microsoft Internet Information Services (IIS) 4.x and 5.x on Windows NT and Windows 2000 allows remote attackers to modify arbitrary uppercase environment variables via a \n (newline) character in an HTTP header.

CVE-2012-0360
Published: 2014-04-23
Memory leak in Cisco IOS before 15.1(1)SY, when IKEv2 debugging is enabled, allows remote attackers to cause a denial of service (memory consumption) via crafted packets, aka Bug ID CSCtn22376.

Best of the Web