Perimeter
11/23/2011
11:12 AM
Taher Elgamal
Taher Elgamal
Commentary
Connect Directly
RSS
E-Mail
50%
50%

Embedding Digital Certificates In Hardware

A natural evolution, but there are a few potential pitfalls to avoid

It was always known that if we chain trust to a known trusted source that the overall trust is improved. Most of the implementations of PKI certificates use some hardware to store the private keys so that forging a signature or obtaining a key is difficult. At this time, the hardware takes the form of hardware security modules (HSMs) in the case of server operations, or a USB device for client machines.

The question is: What if these keys were embedded in the processor itself?

It is only natural for the industry to attempt to combine the trusted hardware into the main processor -- that will enhance the value of the hardware and make strong authentication part of the mainstream industry. The growth of applications that require strong authentication and the growth of e-commerce and other applications that handle sensitive data will perhaps make these feature very important additions to the standard “faster, better, cheaper” way of the growth of the processor industry.

A couple of issues about trust models: First, we should avoid the full flexibility that we did in the browser world since its beginning. A good number of the weaknesses of the current e-commerce environment can be avoided if we prevent “suspect” CAs from being trusted at the root, for example.

Second, we don't want to swing the pendulum the other way completely and create monopolies. Instead, we should embark on designing a good system that will allow us to build this industry correctly. Allowing a trusted CA to be a part of the system should be easy to do, assuming that we know how to revoke a CA key and that revocation checking is a standard part of all operations -- all standard operations.

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
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-3352
Published: 2014-08-30
Cisco Intelligent Automation for Cloud (aka Cisco Cloud Portal) 2008.3_SP9 and earlier does not properly consider whether a session is a problematic NULL session, which allows remote attackers to obtain sensitive information via crafted packets, related to an "iFrame vulnerability," aka Bug ID CSCuh...

CVE-2014-3908
Published: 2014-08-30
The Amazon.com Kindle application before 4.5.0 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

CVE-2010-5110
Published: 2014-08-29
DCTStream.cc in Poppler before 0.13.3 allows remote attackers to cause a denial of service (crash) via a crafted PDF file.

CVE-2012-1503
Published: 2014-08-29
Cross-site scripting (XSS) vulnerability in Six Apart (formerly Six Apart KK) Movable Type (MT) Pro 5.13 allows remote attackers to inject arbitrary web script or HTML via the comment section.

CVE-2013-5467
Published: 2014-08-29
Monitoring Agent for UNIX Logs 6.2.0 through FP03, 6.2.1 through FP04, 6.2.2 through FP09, and 6.2.3 through FP04 and Monitoring Server (ms) and Shared Libraries (ax) 6.2.0 through FP03, 6.2.1 through FP04, 6.2.2 through FP08, 6.2.3 through FP01, and 6.3.0 through FP01 in IBM Tivoli Monitoring (ITM)...

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
This episode of Dark Reading Radio looks at infosec security from the big enterprise POV with interviews featuring Ron Plesco, Cyber Investigations, Intelligence & Analytics at KPMG; and Chris Inglis & Chris Bell of Securonix.