Thursday, April 30, 2020

Word of the Day: cryptographic nonce

 
Word of the Day WhatIs.com
Daily updates on the latest technology terms | April 30, 2020

cryptographic nonce

A nonce is a unique number that is generated for use in cryptography. The term stands for "number used once."

Generally speaking, nonce values are added to encrypted data in order to disguise repeated patterns. Attackers often look for repeated patterns to try and identify corresponding sequences in related messages.

Uses for nonce values include:

Hashing - nonce values are used to create cryptographic hash functions.

 

Identity and Authentication - nonce values ensure that online orders can't be changed and are only processed once.

 

Electronic signatures - nonce values can be used as private keys to create, compare and verify e-signatures.

 

Asymmetric cryptography - two unique nonce values are exchanged in public key cryptography. One value is provided by the client while the other is provided by the server.

 

Nonces can be either random or sequential. A random nonce is produced by stringing arbitrary numbers together, while a sequential nonce is produced incrementally. The most effective nonces have both random and sequential segments. Continue reading about nonces...

Today's Takeaway

 


"The time required to crack an encryption algorithm is directly related to the length of the key used to secure the communication." --
Mike Chapple

Buzzword Alert

 

 

HTTPS

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lawsuits

Did Zoom misled users, investors on video encryption?


BitLocker

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Windows Server 2019

Learn how to set up Windows Server 2019 virtual network encryption.

Quiz Yourself

 

What do you call an algorithm that's used to encrypt and decrypt data?

Answer

Stay in Touch

 

Thank you for reading! For feedback about any of our definitions or to suggest a new definition (or learning resource) please contact us at: editor@whatIs.com

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