TILED BITMAP ALGORITHM AND FORENSIC ANALYSIS OF DATA TAMPERING (AN EVOLUTIONARY APPROACH)

Abstract

Secure data storage is need of this era. Medical, financial, military and private authorities’ legal information are all in need of secure storage. In the era of globalization and dynamic world data outsourcing is unavoidable. Security is highly concern in data outsourcing environment, as data is under the third party service provider. In present systems, third party can access & view data information even though they don’t' have authority to do so or even when the data outsourced to the auditors and allows the employee of that organization to do modification in the database. This may lead to the serious data leakage, data tampering & even data theft causing severe business impact to the data owner. As in now there are many such cases occurred in finance & insurance sector where the data tampering done by the auditors or by the employees of the same organization itself. In this paper we have proposed a basic solution to overcome the problem of tamper detection by notarizing the original data. A heuristics approach is presented in our model where a validator always authenticate the data for original identity using strong one way hash key functions like MD5 hash key provided with protected valid notarizer. By providing distinct digital signatures for many data owners, the proposed system aims a strong notarization service & validation schemes to maintain high data security and high integrity requirements.