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31,377 Article Results

A novel key management protocol for vehicular cloud security

10.12928/telkomnika.v17i2.9278
Nayana; Sri Krishna Institute of Technology Hegde , Sunilkumar S.; Reva University Manvi
Vehicular cloud computing (VCC) is a new hybrid technology which has become an outstanding area of research. VCC combines salient features of cloud computing and wireless communication technology to help drivers in network connectivity, storage space availability and applications. VCC is formed by dynamic cloud formation by moving vehicles. Security plays an important role in VCC communication. Key management is one of the important tasks for security of VCC. This paper proposes a novel key management protocol for VCC security. Proposed scheme is based on Elliptical Curve Cryptography (ECC). The simulation results demonstrated that the proposed protocol is efficient compared to existing key management algorithms in terms of key generation time, memory usage and cpu utilization.
Volume: 17
Issue: 2
Page: 857-865
Publish at: 2019-04-01

Air pollution monitoring system using LoRa modul as transceiver system

10.12928/telkomnika.v17i2.11760
Mia; Universitas Telkom Rosmiati , Moch. Fachru; Universitas Telkom Rizal , Fitri; Universitas Telkom Susanti , Gilang Fahreza; Universitas Telkom Alfisyahrin
Air pollution is a disaster that can indirectly interfere with human health, Indonesia is the third highest country in the world that has pollution levels, one of the types of pollution that threatens public health is the increase of CO, NO2 and SO2 level in the air. With the increasing level of air pollution in the city, it requires a device that can monitor air pollution in a real time. By integrating air sensor and Raspberry Pi as data processor and using LoRa module as transceiver module, then the process of transmitting data from transmitter to receiver can be done directly without connected internet. In a test, the system can transmit intensity data information by wireless system on Line Of Sight (LOS) scemes at a maximum distance of 1.7 Km and Non Line Of Sight (NLOS) scheme at a distance of 400 meters with a average delay is 2 second.
Volume: 17
Issue: 2
Page: 586-592
Publish at: 2019-04-01

Classification of breast cancer grades using physical parameters and K-nearest neighbor method

10.12928/telkomnika.v17i2.9797
Anak Agung Ngurah; University of Udayana Gunawan , S.; University of Udayana Poniman , I. Wayan; University of Udayana Supardi
Breast cancer is a health problem in the world. To overcome this problem requires early detection of breast cancer. The purpose of this study is to classify early breast cancer grades. Combination of physical parameters with k-nearest neighbor Method is proposed to detect early breast cancer grades. The experiments were performed on 87 mammograms consisting of 12 mammograms of grade 1,41 mammograms of grade 2 and 34 mammogram of grade 3. The proposed method was effective to classify the grades of breast cancer by an accuracy of 64.36%, 50% sensitivity and 73,5% specitifity. Physical parameters can be used to classify grades of breast cancer. The results of this study can be used to complement the diagnosis of breast mammography examination.
Volume: 17
Issue: 2
Page: 637-644
Publish at: 2019-04-01

MOS gas sensor of meat freshness analysis on E-nose

10.12928/telkomnika.v17i2.11787
Budi; Universitas Muria Kudus Gunawan , Salman; Universitas Muria Kudus Alfarisi , Gunanjar; Universitas Muria Kudus Satrio , Arief; Universitas Jenderal Soedirman Grendeng Sudarmaji , Malvin; Universitas Jenderal Soedirman Grendeng Malvin , Krisyarangga; Universitas Jenderal Soedirman Grendeng Krisyarangga
The high demand of meat causes the seller mix the fresh and not-fresh meat. Electronic nose was used to detect the quality of the meat quickly and accurately. This research is proposed to test and analyze the sensitivity of MOS sensor in the electronic nose and simulate it using Matlab to identify meat classification using neural network. Test parameters based on Indonesian National Standard (SNI 3932-2008) requirement on the quality of carcass and meat. In this simulation, the number of neurons in the hidden layer was varied to find the most accurate identification. The sensitivity analysis of the MOS sensor was conducted by testing the meat sample aroma, calculate the sensitivity, identify the formation of input, hidden layer, outputs, and simulate the result of the varied formation. Then, found the number of the most optimal neurons. The result of the data training will be applied to the real instrument.
Volume: 17
Issue: 2
Page: 771-780
Publish at: 2019-04-01

Guillou-quisquater protocol for user authentication based on zero knowledge proof

10.12928/telkomnika.v17i2.11754
Kevin; Universitas Multimedia Nusantara Kusnardi , Dennis; Universitas Multimedia Nusantara Gunawan
Authentication is the act of confirming the validity of someone’s personal data. In the traditional authentication system, username and password are sent to the server for verification. However, this scheme is not secure, because the password can be sniffed. In addition, the server will keep the user’s password for the authentication. This makes the system vulnerable when the database server is hacked. Zero knowledge authentication allows server to authenticate user without knowing the user’s password. In this research, this scheme was implemented with Guillou-Quisquater protocol. Two login mechanisms were used: file-based certificate with key and local storage. Testing phase was carried out based on the Open Web Application Security Project (OWASP) penetration testing scheme. Furthermore, penetration testing was also performed by an expert based on Acunetix report. Three potential vulnerabilities were found and risk estimation was calculated. According to OWASP risk rating, these vulnerabilities were at the medium level.
Volume: 17
Issue: 2
Page: 826-834
Publish at: 2019-04-01

Comparison of different configuration space representations for path planning under combinatorial method

10.11591/ijeecs.v14.i1.pp1-8
Sanjoy Kumar Debnath , Rosli Omar , Nor Badariyah Abdul Latip
The use of autonomous vehicle/robot has been adopted widely to replace human beings in performing dangerous missions in adverse environments. Keeping this in mind, path planning ensures that the autonomous vehicle must safely arrive to its destination with required criteria like lower computation time, shortest travelled path and completeness. There are few kinds of path planning strategies, such as combinatorial method, sampling based method and bio-inspired method. Among them, combinatorial method can accomplish couple of criteria without further adjustment in conventional algorithm. Configuration space provides detailed information about the position of all points in the system and it is the space for all configurations. Therefore, C-space denotes the actual free space zone for the movement of robot and guarantees that the vehicle or robot must not collide with the obstacle. This paper analyses different C-Space representation techniques under combinatorial method based on the past researches and their findings with different criteria such as optimality, completeness, safety, memory uses, real time and computational time etc. Visibility Graph has optimality which is a unique from other
Volume: 14
Issue: 1
Page: 1-8
Publish at: 2019-04-01

The step construction of penalized spline in electrical power load data

10.12928/telkomnika.v17i2.8460
Rezzy Eko; University of Malaysia Caraka , Sakhinah Abu; University of Malaysia Bakar , Gangga; PGRI Adi Buana Surabaya University Anuraga , M. A.; Padjadjaran University Mauludin , Anwardi; UIN Sultan Syarif Kasim Riau Anwardi , Suwito; Universitas Muslim Indonesia Pomalingo , Vidila; Serang University Rosalina
Electricity is one of the most pressing needs for human life. Electricity is required not only for lighting but also to carry out activities of daily life related to activities Social and economic community. The problems is currently a limited supply of electricity resulting in an energy crisis. Electrical power is not storable therefore it is a vital need to make a good electricity demand forecast. According to this, we conducted an analysis based on power load. Given a baseline to this research, we applied penalized splines (P-splines) which led to a powerful and applicable smoothing technique. In this paper, we revealed penalized spline degree 1 (linear) with 8 knots is the best model since it has the lowest GCV (Generelized Cross Validation). This model have become a compelling model to predict electric power load evidenced by of Mean Absolute Percentage Error (MAPE=0.013) less than 10%.
Volume: 17
Issue: 2
Page: 1023-1031
Publish at: 2019-04-01

New design of lightweight authentication protocol in wearable technology

10.12928/telkomnika.v17i2.10344
Galih Bangun; Sekolah Tinggi Sandi Negara Santosa , Setiyo; Universitas Mercu Buana Budiyanto
Today, the use of wearable devices is becoming a thing inherent in the daily activities of urban communities. In practice, wearable communications may contain sensitive information regarding a user's health record, so authentication and confidentiality of data exchanged must be guaranteed. In addition, the success of authentication between users, wearable devices and smartphones is very important because there are various threats of attack on the authentication process. Based on previous studies, it was found that the security functionality of user impersonation attack is not owned by lightweight authentication protocols in the current wearable communication environment. So this research undertakes the design of a lightweight authentication protocol to be immune to user impersonation attacks to supplement the lack of security functionality in previous protocols with the support of performing a formal analysis using the Scyther Tool. The research method used is a Research Library supported by conducting protocol security test experiment. The developed protocol utilizes a modified and customized S-NCI key establishment protocol scheme to meet all targeted security functionality. The research resulted that the lightweight authentication protocol generated was immune to the impersonation attacks of users, then was able to add two new functionalities that added wearable devices and added smartphones.
Volume: 17
Issue: 2
Page: 561-572
Publish at: 2019-04-01

Memristor based ring oscillators true random number generator with different window functions for applications in cryptography

10.11591/ijeecs.v14.i1.pp201-209
Noor Alia Nor Hashim , Julius Teo Han Loong , Azrul Ghazali , Fazrena Azlee Hamid
Cryptographic applications require numbers that are random and pseudorandom. Keys must be produced in a random manner in order to be used in common cryptosystems. Random or pseudorandom inputs at different terminals are also required in a lot of cryptographic protocols. For example, producing digital signatures using supporting quantities or in verification procedures that requires generating challenges. Random number generation is an important part of cryptography because there are flaws in random number generation that can be taken advantage by attackers that compromised encryption systems that are algorithmically secure. True random number generators (TRNGs) are the best in producing random numbers. This paper presents a True Random Number Generator that uses memristor based ring oscillators in the design. The designs are implemented in 0.18 µm complementary metal oxide semiconductor (CMOS) technology using LT SPICE IV. Different window functions for the memristor model was applied to the TRNG and compared. Statistical tests results of the output random numbers produced showed that the proposed TRNG design can produce random output regardless of the window function.
Volume: 14
Issue: 1
Page: 201-209
Publish at: 2019-04-01

Wi-Fi password stealing program using USB rubber ducky

10.12928/telkomnika.v17i2.11775
Hansen Edrick; Universitas Multimedia Nusantara Harianto , Dennis; Universitas Multimedia Nusantara Gunawan
A minute is all it takes for a hacker to gain informations from your computer, such as Wi-Fi password. Due to the limited capability of people to remember a lot of complex and unique password, people tend to use the same password for most of their account. This paper aimed to implement Wi-Fi password stealing program in USB Rubber Ducky using USB Rubber Ducky Scripting, Visual Basic Script, Web Server, Command Prompt, and Ducky Toolkit to obtain clear text Wi-Fi password that ever connected to the computer. In the testing phase, the success rate of Wi-Fi password stealing program reached 94.28% with 87.87% obtained personal password is still categorized as guessable password and the password reuse rate reached 81.81%. Thus, Wi-Fi password stealing program can be very dangerous as most of the personal password was used in lots of account and still categorized as guessable.
Volume: 17
Issue: 2
Page: 745-752
Publish at: 2019-04-01

Interface design features of mobile application for senior citizens

10.11591/ijeecs.v14.i1.pp436-442
Natrah Abdullah , Nur Farahin binti Abdul Hamid
Reading Al-Quran is one of spiritual activities and as for Muslims, and they believed God would reward those who read and practice it. In order to dedicate remaining years of their life to God and to bring peace of mind, most of the senior citizens are spending their time doing spiritual activities such as reciting Al-Quran. With the advancement of technology, the sources of Al-Quran are also changing. There are many Al-Quran application being developed in the market and can be download and install easily in mobile devices such as smartphone. However, the application that have been developed often ignored needs and limitation of senior users, that causing them to feel unease to use the mobile application. Hence, the purpose of this study is to investigate the user interface design principles of mobile Al-Quran application for senior citizens. For this purpose, the study has conducted a literature review, interview session usability study, the user interface design principles were identified. Using the principles, this study proposed a mobile application and an observation has been conducted with the senior citizens as a validation of the principles. Validation is based on usability evaluation on effectiveness, efficiency and satisfaction. The results show that the application is satisfactory and usable for the users. In future, the same research interest researcher can explore the audio and navigating in the interface by audio commands. The prototype could be extended to meet the needs of senior citizens that having the problem such as Parkinson and Alzheimer disease.
Volume: 14
Issue: 1
Page: 436-442
Publish at: 2019-04-01

Adomian decomposition method for analytical solution of a continuous arithmetic Asian option pricing model

10.12928/telkomnika.v17i2.9179
S. O.; Covenant University Edeki , G. O.; Covenant University Akinlabi , O.; Universidad Autonóma Metropolitana-Cuajimalpa, Cuajimalpa González-Gaxiola
One of the main issues of concern in financial mathematics has been a viable method for obtaining analytical solutions of the Black-Scholes model associated with Arithmetic Asian Option (AAO). In this paper, a proposed semi-analytical technique: Adomian Decomposition Method (ADM) is applied for the first time, for analytical solution of a continuous arithmetic Asian option model. The ADM gives the solution in explicit form with few iterations. The computational work involved is less. However, high level of accuracy is not neglected. The obtained solution conforms with those of Rogers and Shi (J. of Applied Probability 32: 1995, 1077-1088), and Elshegmani and Ahmad (ScienceAsia, 39S: 2013, 67–69). Thus, the proposed method is highly recommended for analytical solution of other versions of Asian option pricing models such as the geometric form for puts and calls, even in their time-fractional forms.
Volume: 17
Issue: 2
Page: 866-872
Publish at: 2019-04-01

Modelling and predicting wetland rice production using support vector regression

10.12928/telkomnika.v17i2.10145
Muhammad; Universitas Lambung Mangkurat Alkaff , Husnul; Universitas Lambung Mangkurat Khatimi , Wenny; Universitas Lambung Mangkurat Puspita , Yuslena; Universitas Lambung Mangkurat Sari
Food security is still one of the main issues faced by Indonesia due to its large population. Rice as a staple food in Indonesia has experienced a decline in production caused by unpredictable climate change. In dealing with climate change, adaptation to fluctuating rice productivity must be made. This study aims to build a prediction model of wetland rice production on climate change in South Kalimantan Province which is one of the national rice granary province and the number one rice producer in Kalimantan Island. This study uses monthly climatic data from Syamsudin Noor Meteorological Station and quarterly wetland rice production data from Central Bureau of Statistics of South Kalimantan. In this research, Support Vector Regression (SVR) method is used to model the effect of climate change on wetland rice production in South Kalimantan. The model is then used to predict the amount of wetland rice production in South Kalimantan. The results showed that the prediction model with the RBF kernel with the parameter of C=1.0, epsilon=0.002 and gamma=0.2 produces good results with the RMSE value of 0.1392.
Volume: 17
Issue: 2
Page: 819-825
Publish at: 2019-04-01

Improved echocardiography segmentation using active shape model and optical flow

10.12928/telkomnika.v17i2.11821
Riyanto; Politeknik Elektronika Negeri Surabaya Sigit , Calvin Alfa; Politeknik Elektronika Negeri Surabaya Roji , Tri; Politeknik Elektronika Negeri Surabaya Harsono , Son; Politeknik Elektronika Negeri Surabaya Kuswadi
Heart disease is one of the most dangerous diseases that threaten human life. The doctor uses echocardiography to analyze heart disease. The result of echocardiography test is a video that shows the movement of the heart rate. The result of echocardiography test indicates whether the patient’s heart is normal or not by identifying a heart cavity area. Commonly it is determined by a doctor based on his own accuracy and experience. Therefore, many methods to do heart segmentation is appearing. But, the methods are a bit slow and less precise. Thus, a system that can help the doctor to analyze it better is needed. This research will develop a system that can analyze the heart rate-motion and automatically measure heart cavity area better than the existing method. This paper proposes an improved system for cardiac segmentation using median high boost filter to increase image quality, followed by the use of an active shape model and optical flow. The segmentation of the heart rate-motion and auto measurement of the heart cavity area is expected to help the doctor to analyze the condition of the patient with better accuracy. Experimental result validated our approach.
Volume: 17
Issue: 2
Page: 809-818
Publish at: 2019-04-01

Research on neutral-point potential control of a three-level inverter

10.11591/ijeecs.v14.i1.pp20-28
Guangjie Fu , Xinpeng Li
Diode-clamped three-level inverters have been widely used in high voltage and high power fields because of their unique advantages. Nowadays, diode-clamped three-level inverters have become a research hotspot. In order to reduce the content of energy harmonics injected into the power grid by the inverter system, the neutral point potential needs to be controlled. This paper proposes a control method based on a proportional controller. The voltage sector was redefined and the design of the proportional controller was completed. In combination with the introduction of a new PWM technology, a smooth control of the midpoint potential was achieved. The effectiveness of the method is verified by simulation in MATLAB
Volume: 14
Issue: 1
Page: 20-28
Publish at: 2019-04-01
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