Definition: Non-Repudiation is associated with verifying the identities of individuals or companies who are participating in an on-line transaction. The main purpose of authenticating identities online is to prevent one party or the other from denying the transaction. One of the techniques used to provide the authenticity of the transaction is the use of digital signatures. It makes possible the assurance that a particular individual participated in a specific transaction.
Its Relevance: Being able to establish, with certainty, the legitimacy of all parties in an electronic commerce transaction is an absolute necessity. Doing so makes on-line business and commerce possible. All transactions would, otherwise, be questionable without the ability to assure identities. This characteristic of information is essential. Confidence in electronic commerce would be severely hampered. .