Enhancing Mobile Cloud Computing Security Using Steganography

Cloud computing is an emerging and popular method of accessing shared and dynamically configurable resources via the computer network on demand. Cloud computing is excessively used by mobile applications to offload data over the network to the cloud. There are some security and privacy concerns using both mobile devices to offload data to the facilities provided by the cloud providers. One of the critical threats facing cloud users is the unauthorized access by the insiders (cloud administrators) or the justification of location where the cloud providers operating. Although, there exist variety of security mechanisms to prevent unauthorized access by unauthorized user by the cloud administration, but there is no security provision to prevent unauthorized access by the cloud administrators to the client data on the cloud computing. In this paper, we demonstrate how steganography, which is a secrecy method to hide information, can be used to enhance the security and privacy of data (images) maintained on the cloud by mobile applications. Our proposed model works with a key, which is embedded in the image along with the data, to provide an additional layer of security, namely, confidentiality of data. The practicality of the proposed method is represented via a simple case study

Investigating Relationships Among Measures of English and Chinese Handwriting Fluency in Early-Elementary Chinese Dual Language Immersion Students

The purpose of this study was to investigate the relationships between English and Chinese handwriting fluency measures in early-elementary Chinese Dual Language Immersion students. This was done by conducting five handwriting fluency tasks among Chinese Dual Language Immersion students and comparing the findings. First, the findings showed that there was a moderate correlation between the participants\u27 English and Chinese handwriting fluencies and that English fluencies predicted Chinese fluencies. However, the students could write English numbers and letters much faster than Chinese characters. Second, as expected, Chinese DLI participants showed that handwriting fluency improved as grade level increased. Third, third-grade students were not much faster than second-grade students on both English number and English Chinese number tasks. The study informs Chinese DLI programs as it shows that supplemental handwriting instruction is likely necessary to narrow the differences between English and Chinese handwriting fluencies. Instructional amount and quality could be improved to increase Chinese fluency, and English and Chinese partner teachers should collaborate more closely and complement each other\u27s handwriting instructional efforts. In summary, this study identifies significant differences in English and Chinese handwriting fluencies, and further studies may be necessary to consider ways to address these differences