ALERT

[FREE DEMO] Deploy Your Enterprise Cloud in Minutes

Nonce

Definition - What does Nonce mean?

A nonce is a type of data bit identification in IT security and other types of technical systems. It is a number or other data variable that is used only once.

Techopedia explains Nonce

The nonce can be characterized as a "throwaway" bit of data that is a placeholder for specific security strategies. One major use is in authentication, where the nonce simply enumerates duplicate or identical data transmissions. For example, when duplicate transactions would have a negative effect on a system, the nonce makes the message unique, so that the system invalidates future messages with the same content.

The use of a nonce in security and authentication is similar to the use of a "nonce word," which is a word that is only used once.

The nonce has a set of valuable uses in different kinds of programming. There are many different cases where a variable needs to be used only once, for instance, to define a particular message, as mentioned above. The concept of the nonce remains the same regardless of what specific programming syntax is used. In this way, the nonce is like other programming concepts such as loops, arrays and classes.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
Tweat cdn.techopedia.com
"Techopedia" on Twitter


'@Techopedia'
Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Resources
The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.