[WEBINAR] Bulletproof: How Today's Business Leaders Stay on Top

Shared Secret

Definition - What does Shared Secret mean?

A shared secret is a cryptographic key or data that is only known to the parties involved in a secured communication. The shared secret can be anything from passwords or pass phrases, to a random number or any array of randomly chosen data.

A shared secret is either shared beforehand between the involved parties, in which case it's called a pyre-shared key, or it can be created on the fly during the secure communication session using a form of key-agreement protocol.

Techopedia explains Shared Secret

A shared secret is one of the most important mechanisms in cryptography as it allows secure communication to happen between two or more parties. Without a shared secret among the parties, there is no way for each party to guarantee the identity of the other.

Think of a shared secret as the secret password you ask all your friends before letting them inside your tree house, even if you clearly recognize them. In this way, the shared secret can be used to log in to a secured system as an authentication using methods such as challenge-response, or it can be inputted into a key derivation function to produce the keys that can be used to encrypt and authenticate messages.

When creating a shared key on the fly, communicating parties can make use of public-key cryptography methods such as the Diffie-Hellman key exchange method.
Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

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.