Signer Authentication Scheme using Digital Signatures

The chances of interference and malicious manipulations are more when the data is being transferred and is present on channel therefore some kind of authentication system is must to validate the sender before the original data is being processed. An effective scheme is proposed in this article to detect the tampering and support the image compression. A digital signature corresponding to the image will be transmitted along with the image itself that will be used at receiver to validate the sender. Receiver will regenerate the signature corresponding to the received image and if both the signatures match, it means there is no tampering of data and image comes from the actual signer. It also allows the lossy compression techniques by setting some threshold value for matching of signatures. For example with 10% tolerance if both hash files match up to 90% the image will be considered as authentic