![]() Let us now learn how to create a digital signature. Non-repudiationīy this property, any entity that has signed some information cannot at a later time deny having signed it. Once the message is signed, any change in the message would invalidate the signature. If the central office could not authenticate that message is sent from an authorized source, acting of such request could be a grave mistake. For example, if a bank’s branch office sends a message to central office, requesting for change in balance of an account. ![]() There are several reasons to implement digital signatures to communications − Authenticationĭigital signatures help to authenticate the sources of messages. In this section, we will learn about the different reasons that call for the use of digital signature. It also includes authentication function for additional capabilities. Digital signatures allow us to verify the author, date and time of signatures, authenticate the message contents.
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