Information, Computer and Network Security Terms Glossary and Dictionary

Non-Repudiation

Non-repudiation is the concept of ensuring that a contract, especially one agreed to via the Internet, cannot later be denied by one of the parties involved. In regard to digital security, non-repudiation means that it can be verified that the sender and the recipient were, in fact, the parties who claimed to send or receive the message, respectively. In other words, non-repudiation is the ability for a system to prove that a specific user and only that specific user sent a message and that it hasn't been modified.

Related Terms

Non-Repudiation