A-Z Popular New Security Search »
Information Security
 
Related Guides
Coding
Computing
Cryptography
Data
Cryptography
Hash Functions
Nonce
Pseudorandom
top   »  information technology   »  information security   »  cryptography   »  nonce

What is a Nonce?

 , updated on
A nonce is a random number or string that is used once and only once for cryptography and information security. They are typically generated with a random number generator or algorithms that generate reproducible results based on factors such as a timestamp and a key. The following are illustrative examples.

Authentication

Authentication protocols may use a nonce to prevent replay attacks. A nouce that can only be used once prevents an old message being resent to authenticate.

Cryptographic Salt

Cryptographic salt is a type of nouce that is added to a string before it is hashed to make the hash more difficult to reverse.

One-time Passwords

A nouce may be generated and then communicated to a user as a one time password. For example, a customer that calls customer support to reset their password may be given a nouce that enables them to perform the reset.
Overview: Nonce
Type
Information Security
Cryptography
Authentication
Definition
A random number or phrase that is only used once.
Related Concepts
Authentication
Strong Password
Cryptography
Pseudorandom

Encryption

This is the complete list of articles we have written about encryption.
Cleartext
Cryptography
Hashcode
Key Stretching
Keys
Nonce
Pepper
Private Key
Random Seed
Salt
Plaintext
Pseudorandom
Public Key
Public Key Encryption
Strong Password
Symmetric Encryption
More ...
If you enjoyed this page, please consider bookmarking Simplicable.
 
Cite »

Security vs Privacy

The relationship between security and privacy.

Hardening

An overview of technology hardening.

Deep Magic

An overview of deep magic, a technology term.

Defense In Depth

An overview of defense In depth.

Encryption Examples

A definition of encryption with examples.

Canary Trap

A definition of canary trap with an example.

Honeypot

A definition of honeypot with examples.

Security Through Obscurity

A definition of security through obscurity with an example.

Tokens

A definition of token with examples.

Backdoor

A definition of backdoor with examples.

Cryptography

A list of cryptography concepts.

Hashcode

An overview of hashcodes.

Pseudorandom vs Random

The difference between a pseudorandom and true random number.

Cryptographic Keys

Definitions of common types of cryptographic key.

Password vs Key

The difference between passwords and keys.

Digital Watermark

A definition of digital watermark with examples.

Network Security

An extensive list of network security techniques.

Trending

The most popular articles on Simplicable in the past day.

New Articles

Recent posts or updates on Simplicable.
Site Map
Benchmarking
Business Analysis
Coding
Communication
Compliance
Networking
Computing
Creativity
Data
Design
Design Thinking
Governance
Information Security
Information Technology
Infrastructure
Knowledge Management
Management
Metrics
Organizational Culture
Problem Solving
Productivity
Project Management
Quality
More ...
© 2010-2023 Simplicable. All Rights Reserved. Reproduction of materials found on this site, in any form, without explicit permission is prohibited.

View credits & copyrights or citation information for this page.

Home About     Privacy Policy     Cookies Terms of Use     Contact Us Search


Cookies help us deliver our services. You have choices regarding these cookies. Please visit our privacy policy, cookie policy and consent tool to learn more.


Copyright 2002-2024 Simplicable. All rights reserved. This material may not be published, broadcast, rewritten, redistributed or translated. Report violations here.