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Non-Repudiation

 

For e-Commerce and other electronic transactions, including ATMs (cash machines), all parties to a transaction must be confident that the transaction is secure; that the parties are who they say they are (authentication), and that the transaction is verified as final. Systems must ensure that a party cannot subsequently repudiate (reject) a transaction. To protect and ensure digital trust, the parties to such systems may employ Digital Signatures, which will not only validate the sender, but will also 'time stamp' the transaction, so it cannot be claimed subsequently that the transaction was not authorised or not valid etc.


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