Data encryption algorithms

An embedded device is becoming popular in daily life thanks to their low power consumption and multiprocessing capability. In particular, the security of embedded devices has been a big issue of concern to academic and industrial communities. This study aims at the Grain 128- AEAD authenticated encryption with associated data algorithm embedded on low-power and resourceconstrained devices.

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Block ciphers are among the most widely used types of cryptographic algorithms provide secrecy and/or authentication services in particular will introduce DES (Data Encryption Standard)

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Radio based communication, open air The attacker, having a radio transmitter and receiver with the same radio frequency of the underlying wireless network, can easily: Intercept wireless data Connect his computing devices to a nearby wireless network Inject new packets to an existing wireless network Jam a particular wireless channel using a jamming device Security measures Implement encryption algorithms, authentication algorithms, and integrity-check algorithms at the data-link layer Provide network access with wired equivalent privacy Higher-layer protocols and applications can be used ...

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To use data encryption algorithms in network communications, all parities must first agree on using the same secret keys Rely on couriers Set up a meeting to determine a secret key Use postal service, email service, phone service … However, these conventional methods are inflexible for network communication applications Public-key cryptography (PKC) Invented in the 1970’s Without the need of sharing prior secrets to distribute secret keys securely Can also be used for authentication

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Any message written over a fixed set of symbols can be represented as a binary string (a sequence of 0's and 1's) Binary digits 0 and 1 are called bits To reduce computation overhead, encryption algorithms should only use operations that are easy to implement For a binary string X: The length of X, denoted by |X|, is the number of bits in X If |X| = l, X is an l-bit binary string Let a be a binary bit and k a non-negative integer. Denote by ak a binary string consisting of k copies of a Denote the concatenation of X and Y by XY or...

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