Secure Deduplication for Cloud Storage Using Interactive Message-Locked Encryption with Convergent Encryption, To Reduce Storage Space

ABSTRACT The digital data stored in the cloud requires much space due to copy of the same data. It can be reduced by dedupilcation, eliminating the copy of the repeated data in the cloud provided services. Identifying common checkoff data both files storing them only once. Deduplication can yield cost savings by increasing the utility of a given amount of storage. Unfortunately, deduplication has many security problems so more than one encryption is required to authenticate data. We have developed a solution that provides both data security and space efficiency in server storage and distributed content checksum storage systems. Here we adopt a method called interactive Message-Locked Encryption with Convergent Encryption (iMLEwCE). In this iMLEwCE the data is encrypted firstly then the cipher text is again encrypted. Block-level deduplication is used to reduce the storage space. Encryption keys are generated in a consistent configuration of data dependency from the chunk data. The identical chunks will always encrypt to the same cipher text. The keys configuration cannot be deduced by the hacker from the encrypted chunk data. So the information is protected from cloud server. This paper focuses on reducing the storage space and providing security in online cloud deduplication.

Interleukin-6 (IL-6) and tumour necrosis factor-alpha in open and laparoscopic cholecystectomy.

Injury to the human body alters normal physiology across several systems and these alterations are proportional to the extent of the injury. Physiological response to minimally invasive surgery appears to be different than those of traditional open surgery. Acute phase protein response appears to be one example. The important cytokines that are known as major mediators of acute phase response are interleukin-6 and TNF-alpha. Thirty patients were studied in which 14 underwent open cholecystectomy and 16 laparoscopic cholecystectomy. Three blood samples were taken from each patient, one pre-operatively and 2 post operatively at 4 and 24 hours. Interleukin-6 and Tumour Necrosis Factor-alpha (TNF-alpha) were raised significantly in post operative blood sample in both groups but the rise was much more in open group than laparoscopic group. This suggest less stress response in laparoscopic group which also showed a direct effect on patient convalescence in terms of less pain, less analgesic requirement and shorter hospital stay

Prevalence of acute respiratory tract infection and its risk factors in under five children.

This study was undertaken to determine the prevalence and risk factors of the disease among under five children in a rural community. Three villages were randomly selected from the Ghoraghat thana of Dinajpur district. All under five children were followed once a month for consecutive four months and all the target variables were checked and recorded in the questionnaire. 566 out of the total of 965 under five children had ARI episodes during the study period. The prevalence of ARI in the community was 58.7%. However, the incidence in both sexes were 14.7%. It was 14.9% and 14.4% in male and female respectively. The mean number of episodes of ARI was 1.75 per child per year. Among studied risk factors, malnutrition (63% vs. 37%), illiteracy (64% vs. 36%), poverty (62% vs. 38%), overcrowding (62% vs. 38%) and parental smoking (61% vs. 39%) were found in significantly higher proportions in ARI victims compared to those without ARI. These observations emphasize the need for research aimed at health system to determine the most appropriate approaches to control acute respiratory infection and thus could be utilized to strengthen the ARI control programme.