Digital transmission of sensitive images and documents over unsecure networks, such as the Internet, has become a general practice. As a result, the digital content has become vulnerable to intentional and unintentional modifications during transmission. A system that combines linear interpolation for tamperdetection and localization that provide security to exchanged data is the main concern. The algorithm is based on hash based representation of such image and uses discrete wavelet transform method to carry out detection and localization of tampering. And it is robust against harmless manipulation and sensitive enough for even a minute tampering. The proposed model presents a superior tamper detection and recovery capability in comparison to other models in the related literature.