A dynamic data encryption method based on addressing the data importance on the internet of things

Abstract

The rapid growth of internet of things (IoT) in multiple areas brings research challenges closely linked to the nature of IoT technology. Therefore, there has been a need to secure the collected data from IoT sensors in an efficient and dynamic way taking into consideration the nature of collected data due to its importance. So, in this paper, a dynamic algorithm has been developed to distinguish the importance of data collected and apply the suitable security approach for each type of data collected. This was done by using hybrid system that combines block cipher and stream cipher systems. After data classification using machine learning classifiers the less important data are encrypted using stream cipher (SC) that use rivest cipher 4 algorithm, and more important data encrypted using block cipher (BC) that use advanced encryption standard algorithm. By applying a performance evaluation using simulation, the proposed method guarantees that it encrypts the data with less central processing unit (CPU) time with improvement in the security over the data by using the proposed hybrid system.

A hybrid modified lightweight algorithm for achieving data integrity and confidentiality

“…2n/wn, where n must be a minimum of (16, 24, 32, 48, 64) bits in length, and the key must be a minimum of m bits in length. m must be in the range (2,3,4) and is version dependent [12], [20]. In the case of Speck 64/128, for instance, 64 block size divide two-part (32-bit) words representing in (x, y) are encrypted using a key 128 divide four-part (32-bit) word representing in k=(l [2], l [1], l[0], k[0]) Beaulieu et al [12] as illustrated in Table 1 [20].…”

“…m must be in the range (2,3,4) and is version dependent [12], [20]. In the case of Speck 64/128, for instance, 64 block size divide two-part (32-bit) words representing in (x, y) are encrypted using a key 128 divide four-part (32-bit) word representing in k=(l [2], l [1], l[0], k[0]) Beaulieu et al [12] as illustrated in Table 1 [20]. As illustrated in Algorithm 2 pseudocode and Figure 2 of Speck algorithm consists of two iterative components: Figure 2(a) a key schedule and Figure 2(b) a round function denoted by R, both of which require a round count (T) [12], [20].…”

“…Cryptography is used to keep data secure while it is in transit (electronic or physical). The increasing demand for the confidentiality of information necessitates the creation of new encryption techniques and algorithms [1], [2], [5], [6]. According to William Stalling, the security of encrypted data is entirely dependent on two factors: the strength of the cryptographic technology and the secrecy of the key [7].…”

Hybrid homomorphic‐asymmetric lightweight cryptosystem for securing smart devices: A review

“…A higher level of security was achieved by combining AES and base64. In Reference 90, a dynamic algorithm was introduced using a hybrid system that integrates stream cipher and block cipher. The Rivest cipher 4 (RC4) algorithm encrypts less significant data, and the most significant data was encrypted using AES.…”