Comparative Study of Lightweight Hashing Functions for Resource Constrained Devices of IoT

An improved IOT Authentication Process based on Distributed OTP and Blake2

“…The most popular lightweight hash functions include Snefru, Message Digest (MD5), the SHA family, HAVAL, KECCAK, and BLAKE [4]. Several comparative studies have been done under different conditions and environments to find the best among these algorithms.…”

“…Finally, KECCAK was announced the winner and designated as SHA3 [14,12] Keccac, the winner of the competition, uses the sponge-based hash design based on bit permutations. In addition to being quick in hardware implementations, it has shown resistance against multiple attacks, a high level of security, high throughput, and simplicity of design [4,13].…”

“…Indeed, a 16-word constant is used with the message word, the salt value, and the initial vector to form a 4x4 matrix, each line is subjected to eight sets of permutations and combinations. [4,6] Later, BLAKE was improvised into BLAKE2, based on the same BLAKE design for high efficiency and safety. It went under several changes to optimize the protocol for modern applications with simplicity and ease of use.…”

Lightweight cryptography in IoT networks: A survey

“…Ensuring privacy in smart city IoT nodes is challenging for several reasons. Firstly, the CPU in IoT devices is minimal and cannot compute complex algorithms [8][9][10][11][12]. Secondly, the power consumption of the security algorithm should be low since the majority of IoT devices work with a battery [9,[11][12][13][14][15].…”

“…Firstly, the CPU in IoT devices is minimal and cannot compute complex algorithms [8][9][10][11][12]. Secondly, the power consumption of the security algorithm should be low since the majority of IoT devices work with a battery [9,[11][12][13][14][15]. Thirdly, simple sensors are connected to cover large physical network [14].…”