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This is how we can use this rover in different fields as well as for research purpose by further manipulation in programming and interfacing it can be modified accordingly. The same concept we have used it for designing this robot (rover) to facilitate the humans in the future for security purposes, controllable by cell phone having great versatility and various applications with key features such as password protection, night vision, automatic obstacles avoidance, gas sensing, smoke and edge detection and hence immediately providing an alert through text messaging to the calling person and above all wider coverage. The version of DTMF that is used in push-button telephones for tone dialling is known as Touch-Tone. DTMF is used for telecommunication signalling over analog telephone lines in the voice-frequency band between telephone handsets and other communications devices and the switching centre. The methodology used in this manuscript is DTMF (Dual Tone Multi-Frequency) and GSM module. Also according to some tests with 256 bits key and 5000 iteration there is no repetition in the generated subkeys, but in small key size a problem of repetition will be encountered. In this research, the proposed algorithm proved the concept of diffusion on the key itself. The proposed algorithm (Roty_Shift) was tested using different key sizes and obtained good results.

The proposed algorithm consists of five levels, and according to these five levels the subkeys will be generated and the size of each one is (N*N), each one of these subkeys is possible to use it in any encryption strategy of block cipher type. Roty_Shift needs two secret seeds as secret keys, seed1 will be generated by true random number generator (TRNG) while seed1and seed2 will be used in pseudorandom number generator (PRNG), also this research utilizes the mechanism of the key derivation function (KDF) to generate the subkeys, on other hand Roty_Shift can be considered as PRNG.

In this research a proposed algorithm to generate secret keys was accomplished, the proposed key generation algorithm will be called (Roty_Shift algorithm) and it will generate a series (list) of subkeys may be used for data encryption.

Office professional plus 2019 serial key 2021