The International Journal of Innovative Research in Computer and Communication Engineering
In this paper, the authors review methods to protect moving data objects for the past 30 years. Data disclosure preventing techniques such as disclosure limiting and ad-hoc approval publishing data are depicted. Privacy homomorphism and encryption methods such as data protection directive, commercial masking facility algorithm, data encryption algorithm and post randomization method are also discussed in detail. The knowledge discovery data mining techniques to preserve privacy such as k-anonymity, Advanced Traveler Information Systems (ATISs) and Geographical Information System (GIS) are elaborately studied.