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.