Wednesday 6 August 2014

Database Protection | digital signatures


DIGITAL SIGNATURES

AT SENDER SIDE
  • Message is divided into two parts.Firstly through hash function message digest is made.Message digest is the smallest version of the message.
  • Secondly the message is encrypted i.e. cipher text is made and then the combination of both i.e. encrypted  message + message digest is sent to the receiver.
AT RECEIVER SIDE
  • At receiver side through hash function a new message digest is made and also through decryption method.
  • If both the message digest are same then we can say that the received message is correct or without error.



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