DIGITAL SIGNATURE

UPSC GS MAIN IMPORTANT QUESTION

 DIGITAL SIGNATURE 



Digital Signature a type of electronic signature which ensures the authenticity of the documents. It gives the information about the documents. It gives the information about the document creator and ensures that document is not altered or tampered.




Authentication of digital signature means that the sender only knows the unique key along which any electronic record is tied. Hence, the sender cannot deny sending a message that he had sent. Digital Signature use encryption for ensuring the authentication of electronic document, which is done by password, checksum, CRC, private key encryption or public key encryption.




Salient features of digital Signature:


1. Authentication of the Sender :
                     It gives information about the creator of the document and thus authenticates the sender.
2. Data Integrity :
                     It ensures that the content of the electronic document is not tampered.
3. Time Stamp:
                     It gives the information about the time at which the message was sent, depending on the type of digital Signature.
4. Non- repudiation:        
                     The sender cannot deny the sending of the message and the contents of the message.







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