OAuth is an open authorization standard used to provide secure client application access to server resources. The OAuth authorization framework enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner or by allowing the third-party application to obtain access on its own behalf.
OAuth enables server owners to authorize access to the server resources without sharing credentials. This means the user can grant access to private resources from one server to another server resource without sharing their identity.
OAuth Solves Traditional Client-Server Authentication Issues
OAuth is designed to problems and limitations found in traditional client-server authentication model where third-party applications are required to store the resource owner's credentials for future use and where resource owners cannot revoke access to an individual third party without revoking access to all third parties.
OAuth addresses these issues by introducing an authorization layer and separating the role of the client from that of the resource owner. Instead of using the resource owner's credentials to access protected resources, the client obtains an access token, issued to third-party clients by an authorization server with the approval of the resource owner.
The OAuth Protocol
The OAuth 1.0 protocol (RFC5849), published as an informational document, was the result of a small ad hoc community effort. The OAuth 2.0 protocol is not backward compatible with OAuth 1.0.
OAuth Security Flaws
In May, 2014 a security flaw was discovered in the widely used OAuth and OpenID website authentication mechanisms. The flaw was not in OAuth 2, but was a result of how some businesses implemented the standards, primary in situations where open redirects were used. Following news of the security flaw, Google said it will be more stringent in securing users when they log in to their accounts by applying additional authorization checks.
IT Solutions Builder TOP IT RESOURCES TO MOVE YOUR BUSINESS FORWARD
Which topic are you interested in?
What is your company size?
What is your job title?
What is your job function?
Searching our resource database to find your matches...
Stay up to date on the latest developments in Internet terminology with a free newsletter from Webopedia. Join to subscribe now.
From A3 to ZZZ this guide lists 1,500 text message and online chat abbreviations to help you translate and understand today's texting lingo. Read More »List of Well-Known TCP Port Numbers
Port numbers 0 to 1024 are reserved for privileged services and designated as well-known ports. This list of port numbers are specified in... Read More »
Computer architecture provides an introduction to system design basics for most computer science students. Read More »Network Fundamentals Study Guide
Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »The Five Generations of Computers
Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »