A cryptographic service that legally prevents the originator of a message from denying authorship at a later date.
In computer security, assurance that a transaction can be proved to have occurred. Also referred to as accountability.
(1) a user-oriented security quality requirement specifying the degree to which an application or component shall prevent a party to an interaction (e.g., message, transaction) from denying having participated in all or part of the interaction.(2) a quality factor measuring the degree to which an application or component actually provides proof preventing a party to an interaction from repudiating it.(3) a security mechanism by which an application or component measuring the degree to which an application or component prevents a party to an interaction from denying having participated in all or part of the interaction. For example, the application or component may use digital signatures, timestamps, encryption, decryption, and hash function to provide tamper-proof records of the: Message contents. Time that the message was sent Time that the message was received. Message sender’s identity. Message recipient’s identity. Contrast with auditability.
The property of a receiver being able to prove that the sender of some data did in fact send the data even though the sender might later desire to deny ever having sent these data.
Provides proof of the origin or delivery of data in order to protect the sender against a false denial by the recipient that the data has been received or to protect the recipient against false denial by the sender that the data has been sent. Note: Only a trier of fact (someone with the authority to resolve disputes) can make an ultimate determination of non-repudiation. By way of illustration, a digital signature verified pursuant to this Certification Practice Statement can provide proof in support of a determination of non-repudiation by a trier of fact, but does not by itself constitute non-repudiation.
one of the cornerstones of secures Internet communications. referring to the fact that the sender of a message cannot deny; that they actually sent the message
a technique providing evidence that a user took an action. Nonrepudiation is used to counter false denial of involvement in a communication or transaction.
A basic security function of cryptography. Nonrepudiation provides assurance that a party in a communication cannot falsely deny that a part of the communication occurred. Without nonrepudiation, someone can communicate and then later deny the communication or claim that the communication occurred at a different time. See also cryptography; authentication; confidentiality; integrity.
The condition established by a digital signature under which the sender of a message cannot later claim that it did not send the message.
Reducing an end-users ability to deny he was the one who authorized an action or sent a message.
Assurance that the sender of data is provided with proof of delivery and the recipient is provided with proof of the sender's identity, so that neither can later deny having processed the data. Digital signatures are the current non-repudiation technique of choice for the Nil (DOD JP 1994; JCS 1997; NSTISSI 1996).
A security feature that verifies to the sender that the recipient of the message received the message and that the integrity of the content was not compromised.
Ensuring that the signer of a document or communication does not deny the origination, submission, delivery, or integrity of its contents.
The inability by the sender of a message to deny having sent the message. A digital signature provides one form of nonrepudiation.
The goal of nonrepudiation is to prove that a message has been sent and received. This is extremely important in networks where commands and status must be issued and responded to, where financial transactions must be verifiably completed, and where signed contracts are transmitted.
nonrepudiation - A technique used to ensure that someone performing an action on a computer cannot falsely deny that they performed that action. Nonrepudiation provides undeniable proof that a user took a specific action such as transferring money, authorizing a purchase, or sending a message.
The ability to identify who has performed various actions on a computer, so that users cannot deny responsibility for the actions they perform. Generally used in the sense of creating unimpeachable audit trails to identify the source of commercial transactions or malicious actions.
A property of a cryptographic system that prevents a sender from denying later that he or she sent a message or performed a certain action.
