The Challenges of Cybersecurity Frameworks to Protect Data Required for the Development of Advanced Maintenance

Abstract

The main objective of the paper is to highlight the important aspects of the data management in condition monitoring and maintenance, especially when the emergent technologies, such as the cloud computing and big data, are to be considered in the maintenance department. In addition, one of the main data management elements highlighted in the current work are the cybersecurity issues which might be one of the biggest obstacles hindering the development of cloud based big data for condition-based maintenance (CBM) purposes. Further, the benefits and current risks of storing a company's data in the cloud are highlighted. The authors discuss as well different data needs in various processes in the area of asset management. In addition, the challenges and issues to be addressed for the optimal use of the company data at the cloud together with the big data approach are addressed. This is seen as an important part in an effort to achieve sustainable information and communication technologies for the industry

An Efficient Encrypted Floating-Point Representation Using HEAAN and TFHE

“…e reason why this works is illustrated in Figure 5(C). For example, if C 1 contains an encryption of 1100 (2) (4 bits) and C 2 contains 1010 (2) , we can see that a carry is generated as a result of adding the 1's complements of C 1 and C 2 . Based on this, we can confirm that C 1 > C 2 .…”

“…One significant difference of this approach from IEEE 754 is that the value of the mantissa is assumed to be in the range [0, 1). is is because the HEAAN operation works better when the hidden plaintext in the ciphertext in [0, 1) than [1,2). Figure 6 shows the procedure on how a single floatingpoint number is encrypted using three ciphertexts.…”

“…We discuss how the following code works. Because Two n-slot ciphertexts (input) a 0 a 1 a 2 ... .... a n-2 a n- Case 2 (C 1 ≤ C 2 ): C 1 = 1010 (2) , C 2 = 1100 (2) C 1 + ~C 2 = 1010 (2) + 0011 (2) = 1101 (2) → carry = 0…”

“…If C m [0] is 1, the fraction part of the multiplication result is C m [1] ∼ C m [22], and the exponent value should be incremented by one. If C m [0] is 0, that means C m [1] is 1, so the exponent does not increase and the fraction part of the result is C m [2]∼C m [24]. e method that reflects this is shown in Figure 22 below.…”

“…Using these properties, we can process and analyze sensitive medical and financial information without exposing them if we use FHE. erefore, FHE is expected to be an indispensable core technology for the prevalence of artificial intelligence and data mining, which is the core technology of the 4th industrial revolution [1,2].…”