Improve Security Using Steganography and Cryptography Based on Smartphone Users Locations

Smartphones have become one of the most important used devices worldwide. This is, in fact, due to the significant advances in: communication technology, mobility, and the development of various types of these devices. They have been used for communication, entertainment, navigation, etc. Smartphones are usually integrated with navigation systems such as The Global Positioning System (GPS). As a result, the location of smartphone users can be determined via such systems. The security of transmitting information over mobile phone networks is an issue by itself. In this paper, proposed a system that integrates the location of the smartphone obtained via GPS with steganography for transmitting confidential information, and an encryption method to improve the security of the transmitted information. The proposed system has implemented the Twofish Algorithm to encrypt confidential information, and the RSA algorithm to encrypt the GPS coordinates that will serve as keys. A number of measures of image quality were used to evaluate the proposed system such as MSE, PSNR, SSIM and NCC. As a result of this integration, the proposed system showed more flexibility and a high level of security.