Non Repudiation

Meaning

Technical assurance that the author of a digital message or transaction cannot successfully deny their involvement. Achieving non repudiation requires the use of digital signatures and time stamps that link a specific action to a unique identity. The property holds as long as the private key used for the signature remains under the exclusive control of the owner.

Transaction Proof

Evidence of the origin of a command is generated at the moment the data is transmitted. When non repudiation is implemented, it prevents a party from claiming that a contract was signed or an order was placed without their authorization.

Dispute Mitigation

Resolution of disagreements over the validity of a message happens by presenting the cryptographic proof to a neutral third party. The presence of non repudiation reduces the need for lengthy investigations into the source of a communication.

Evidence Persistence

Preservation of the security logs and the public keys is necessary to maintain the proof over the long term. If the digital certificates expire or are revoked without a proper record, the ability to enforce non repudiation in a future legal case is lost. This assurance is a requirement for high-value financial and industrial transactions.