non-repudiation
Sign in to saveAlso known as non-deniability, undeniable, non-repudiation of origin
In law, non-repudiation is a situation where a statement's author cannot successfully dispute its authorship or the validity of an associated contract. The term is often seen in a legal setting when the authenticity of a signature is being challenged. In such an instance, the authenticity is being "repudiated".
In the Vinony graph
Within Vinony's link graph, non-repudiation is referenced by 66 other articles, and connects out to digital signature, International Standard Book Number and Wayback Machine.
It sits within the topics Contract law, Notary and Public-key cryptography.
Its subject is documented across 15 Wikipedia language editions.
~6 min read
Encyclopedic overview
6 sectionsContents
- In security
- In digital security
- Trusted third parties (TTPs)
- See also
- References
- External links
In law, non-repudiation is a situation where a statement's author cannot successfully dispute its authorship or the validity of an associated contract. The term is often seen in a legal setting when the authenticity of a signature is being challenged. In such an instance, the authenticity is being "repudiated".
For example, Mallory buys a cell phone for $100, writes a paper cheque as payment, and signs the cheque with a pen. Later, she finds that she can't afford it, and claims that the cheque is a forgery. The signature guarantees that only Mallory could have signed the cheque, and so Mallory's bank must pay the cheque. This is non-repudiation; Mallory cannot repudiate the cheque. In practice, pen-and-paper signatures are not hard to forge, but digital signatures can be very hard to break.
Excerpted from Wikipedia’s “non-repudiation” article, available under the CC BY-SA 4.0 licence.