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FMIPA UGM’s Cryptography and Cybersecurity Research Centre (C3R) Holds Regular Reading Groups to Prepare Young Cryptographers

Januari 30, 2024

The Center for Cryptography and Cybersecurity Research (C3R) at the Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Gadjah Mada (UGM), conducted its second reading group activity on Friday, January 26, 2024, at 09:00 AM WIB via Zoom Meeting. This activity was initiated to provide a platform for students and academic communities interested in cryptography to enhance their understanding of current issues in the field of cryptography and cybersecurity.

During this session, Annisa Dini Handayani, a Ph.D. student in Mathematics at UGM who also serves as a Lecturer at the Polytechnic of Cyber and National Intelligence, acted as the main speaker. The paper presented was titled “New Receipt-Free Voting Scheme Using Double-Trapdoor Commitment”. It was authored by prominent researchers Xiaofeng Chen, Qianhong Wu, Fangguo Zhang, Haibo Tian, Baodian Wei, Byoungcheon Lee, Hyunrok Lee, and Kwangjo Kim.

The paper discusses a solution deemed most suitable for large-scale electronic voting (e-voting). Chen et al. propose an e-voting scheme utilizing blind signatures, a double-trapdoor commitment scheme, and anonymous channels. This scheme is an advancement from the previous e-voting scheme proposed by Okamoto. Okamoto’s e-voting scheme claims to satisfy the aspect of receipt-free security using a single trapdoor commitment scheme and blind signatures. Receipt-freeness ensures that voters cannot prove their choices to others, thereby preventing vote buying or coercion. Okamoto proposed two e-voting schemes, one requiring security parameters from a registration committee and the other assuming very high physical security levels. Therefore, to enhance Okamoto’s scheme, Chen et al. designed an e-voting scheme that does not require security parameters from a registration committee and does not rely on assumptions of high physical security but still meets the receipt-freeness aspect.

As indicated by the title of the paper, the concept of the double-trapdoor commitment scheme is discussed, along with its differences from the single-trapdoor commitment scheme. One advantage of the double-trapdoor commitment scheme is its perceived higher security compared to the single-trapdoor commitment scheme. This is because the double-trapdoor commitment scheme requires obtaining two secret values to break the scheme entirely. Apart from e-voting, this commitment scheme can also be utilized to construct zero-knowledge proof schemes and electronic auctions.

In conclusion, Chen et al. claim that their e-voting scheme is more efficient than the Okamoto scheme. Furthermore, they demonstrate that their proposed e-voting scheme meets the security requirements of e-voting, such as completeness, privacy, soundness, unreusability, eligibility, fairness, verifiability, and receipt-freeness.

We invite all students, researchers, and practitioners interested in joining this activity and contributing to in-depth discussions on current cryptographic issues. This activity supports SDGs poin 9 related to Industry, Innovation, and Infrastructure, and poin 11 related to Sustainable Cities and Communities.

About C3R FMIPA UGM:

The Center for Cryptography and Cybersecurity Research (C3R) FMIPA UGM is a research institution under the Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Gadjah Mada (UGM). C3R is committed to enhancing understanding and security in the fields of cryptography and cybersecurity through research activities, training, and innovation development.

C3R FMIPA UGM Media Contact:

Name: Saifullah Ali

Coordinator of C3R FMIPA UGM Reading Group

Email: saifullah.ali@mail.ugm.ac.id

Author: Uha Isnaini

Editor: Febriska Noor Fitriana

Picture: www.encryptionconsulting.com

PESEGI FMIPA UGM Community Successfully Organizes First Cycling Event in 2024

Januari 23, 2024

Yogyakarta, January 21, 2024 – The PESEGI (Pesepeda Setu Legi) Community from the Faculty of Mathematics and Natural Sciences at Gadjah Mada University (FMIPA UGM) has successfully organized its first cycling event in 2024. The event took place on Saturday Legi, January 20, 2024, and was held as part of the efforts to support the Health Promoting University program and contribute to the implementation of SDGs, specifically goal number 3, Good Health and Well-Being, and sustainable cities and communities.

With a sense of unity, participants, including faculty members, staff, and FMIPA UGM alumni, gathered at 06:00 AM on the FMIPA UGM campus. The event commenced with a prayer followed by a group photo session, symbolizing unity and joy. Attended by faculty members, staff, alumni of FMIPA UGM, and open to the public, the event attracted cycling enthusiasts from various backgrounds in Yogyakarta.

The chosen route for this cycling event was not only captivating but also meaningful. Participants rode along the Mataram Canal, passing through Affandi Street, Condong Catur, and Ngemplak. Beyond the city’s main roads, cyclists explored rural areas, enjoying the beauty of nature and the simplicity of village life. The route was selected not only for its scenic beauty but also to instill appreciation for the environment and the lives of the surrounding communities.

The event ended with a communal meal at Angkringan Prapatan, Donolayan, Donoharjo, Ngaglik, Sleman, a renowned venue known for its warm and pleasant atmosphere. This gathering went beyond sharing a meal; it provided participants with a moment to share experiences and stories, strengthening the bonds between faculty members, staff, and cycling enthusiast alumni.

This cycling event focused not only on sports and recreation but also on promoting a healthy lifestyle and building a strong community. It aligns with UGM’s Health Promoting University program, aiming to create an academic environment that supports physical, mental, and social well-being.

“We are thrilled and proud of the success of this event,” said the PESEGI Community coordinator. “We hope activities like these continue, serving not only as a means of exercise but also as a platform to strengthen our community and support health programs at our university.”

The cycling event is expected to set an example for other communities in promoting a healthy lifestyle and camaraderie. The PESEGI FMIPA UGM community is committed to organizing similar activities in the future as part of its contribution to building a healthier and more environmentally and socially conscious generation.

Contact Information:

Contact Name: Winarto Haryadi

Email: wnrt_haryadi@ugm.ac.id

About PESEGI FMIPA UGM Community:

The PESEGI (Pesepeda Setu Legi) Community is a cycling enthusiast community at the Faculty of Mathematics and Natural Sciences, Gadjah Mada University, founded with the aim of promoting a healthy lifestyle and camaraderie through cycling activities.

Author: Uha Isnaini

Editor: Winarto Haryadi

Agenda Kegiatan Perkuliahan Semester Genap Tahun Akademik 2023/2024 Fakultas MIPA UGM

Januari 19, 2024

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Age is Merely a Number: The Oldest Competency Certification Participant from FMIPA UGM Continues Inspiring Work Through Chemical Waste

Januari 18, 2024

Entering the third decade as the Laboratory Education Manager (PLP) for the Elins UGM Study Program, Mardi Wasono had the opportunity to obtain certification as a Young Competent Chemical Safety Expert in Jakarta at the end of 2023. The activity was funded by the Ministry of Education and Culture of the Republic of Indonesia through PT. UNILAB PERDANA with an Assessor from the Industrial Chemical Profession Certification Institute (LSPKI). Participants had to pass administrative selection stages with a portfolio attachment. Subsequently, successful participants underwent 15 days of online mentoring and industrial supervision. Following that, participants traveled to Jakarta for a 5-day training and competency test. In this case, only 20 participants were selected from applicants across Indonesia to go to Jakarta for certification.

Mardi expressed his pride and gratitude for the opportunity, considering his educational background as a graduate of STM in electrical engineering and his not-so-young age. Even with only 3 years and 3 months left dedicating himself to FMIPA UGM, Mardi still felt the desire to innovate in the field of chemical waste management. “I graduated from STM in electrical engineering but luckily could participate in research and training. Everything funded, free of charge. I am not the oldest participant, but I’m considered senior because the others are younger,” he said, displaying the obtained Young Competent Chemical Safety Expert certificate. The enthusiasm and spirit in conducting research for the benefit translate into concrete steps for SDGs impacting innovation (9), marine ecosystems (14), and terrestrial ecosystems (15).

Mardi has been involved in chemical waste research for the past 4-5 years, but his laboratory experience spans over 30 years. The research stemmed from his concerns about the management of chemical waste and its environmental impact. On the other hand, another driving factor was his concern for safety in working, especially in chemical waste management. The goal of the research is to reduce the levels of heavy metal values in chemicals to meet the standards set by the government. This is done to ensure that chemicals do not have a negative impact on the environment, whether for humans, animals, or plants. “Chemical waste is dangerous if not treated and directly disposed of into the environment. Substances like HCl and H²O² are strong acids. Therefore, they need to be treated first to avoid polluting the environment,” he explained.

Mardi is also grateful for the supportive colleagues in his research, involving professors, researchers, and technicians. Reflecting on his participation in the certification activity at the twilight of his career, Mardi believes it helped him understand his shortcomings and acknowledges that, as a human, he is far from “perfect,” given the many outstanding individuals he has encountered. He also hopes that many staff in other universities will continue to innovate and develop to provide benefits to their surroundings. Although Mardi will retire in 2027, he remains actively engaged in developing his research on chemical waste management. “Currently, I am using agricultural waste (straw) from the Faculty of Veterinary Medicine UGM as an absorbent medium to reduce the levels of heavy metals in the chemical waste generated from practical activities in the basic Elins laboratory. The hope is to achieve the desired target and not harm the environment,” he added.

Keywords: competency certification, FMIPA UGM, laboratory, chemical waste, occupational health and safety (K3), Chemistry

Humas FMIPA UGM | Febriska Noor Fitriana

SMAN 1 Jatiluhur Purwakarta’s Visit to FMIPA UGM: Boosting Student Motivation to Pursue Studies in the Field of Science

Januari 15, 2024

SMAN 1 Jatiluhur Purwakarta group visited FMIPA UGM on Thursday, January 11^th 2023. In this regard, students and teachers were welcomed and guided by Sugeng Triono, S.Si., M.Si., a lecturer of the Department of Chemistry in the Auditorium of FMIPA UGM. During the opening ceremony, the Vice Principal expressed appreciation to FMIPA UGM for accepting the visit. The agenda continued with a presentation about the ins and outs of FMIPA UGM. Students and teachers received information about the list of study programs, alumni networks, university registration procedures, faculty facilities, and more.

The atmosphere of the visit was filled with laughter but they remained focused on the presentation material. In opening the presentation, Sugeng urged students through his humor that science is not difficult and offers excellent job opportunities. “Science is not difficult. I like mathematics. Mathematics is easy; it’s just numbers 0 to 9 lined up. Addition, subtraction, multiplication, and division also have clear results,” said Sugeng. He then explained important points of the material, such as research and innovation opportunities, career paths, scholarships, and various extraordinary networking opportunities among FMIPA UGM alumni.

“What motivated you to choose Chemistry at UGM?” asked one student. While reminiscing, Sugeng recounted the twists and turns of his life in deciding to pursue a Chemistry program degree. When Sugeng was in school, he found the way Chemistry was taught to be unpleasant. This served as a trigger and motivation for Sugeng to dive into the field of Chemistry and teach it enjoyably. Until now, Sugeng has dedicated himself to becoming a lecturer in the Chemistry study program at UGM. He also added that in pursuing dreams, there will always be challenges such as economic conditions, family situations, and more. However, Sugeng emphasized to the students that no matter how challenging it is, as humans, they must be resilient in striving to achieve their aspirations, including continuing their education.

Keyword: students, researchers, students, high school, SMAN 1 Jatiluhur Purwakarta

Humas FMIPA UGM | Febriska Noor Fitriana

Budi Mulia Tangerang High School Visit to FMIPA UGM: Addressing Students’ Career Concerns in the Field of Science

Januari 15, 2024

Budi Mulia Tangerang High School students seized a unique opportunity to gain firsthand insights into various study programs at FMIPA UGM on Tuesday, January 9^th 2023. Dr. Dwi Ertiningsih, M.Si., a lecturer in the Mathematics program, and Dr. Sc. Robby Noor Cahyono, M.Sc., a lecturer in the Chemistry program, welcomed and guided the students and teachers in the FMIPA UGM Auditorium. The presentation covered essential information about FMIPA UGM, including the list of study programs, alumni networks, university admission procedures, faculty facilities, and more. Additionally, there was a Q&A session that provided mutual insights and new perspectives for both FMIPA and the students and teachers.

“Graduates of FMIPA go beyond being mere educators; they embark on diverse paths,” stated Ertin. This statement catalyzed students to ask various questions about their career prospects. One such concern was the waiting period between graduation and securing a job. “On average, the waiting period between graduation and getting a job is 1.5 months,” answered Ertin, addressing the students’ uncertainties. The students were then shown portraits of FMIPA UGM alumni who excelled in related fields and various career paths. Examples included a Physics graduate holding a position in energy management and a Mathematics graduate thriving as a banker.

One of the prominent new study programs at FMIPA is Actuarial Science, sparking curiosity among the students. Ertin elaborated on Actuarial Science, a combination of economics and statistics. “Indonesia currently needs 1 million actuaries, presenting an opportunity for students interested in pursuing studies in Actuarial Science,” explained Ertin. Dr. Sc. Robby Noor Cahyono, M.Sc., the speaker and lecturer in the Chemistry program, highlighted the advantages of Actuarial Science at FMIPA UGM, emphasizing the high demand for actuaries and the competencies gained through this program.

“At first, there was some hesitation about what FMIPA UGM is like. After the presentation, they started asking many questions and became interested in the available study programs,” said Ertin. Following the presentation, many students began exploring information independently about the study programs at FMIPA UGM. “I am very happy to come to UGM. I have gained a deeper understanding of the available study programs such as Actuarial Science, and I am interested in that field,” said Naura, a second-year student. “I have built motivation because the explained study program (Actuarial Science) is excellent. I am delighted to be here because the facilities are excellent, the buildings are impressive, and the graduates are also outstanding. Initially, I wanted to go into business, but after hearing about Actuarial Science, which also involves the business realm, I am now interested in that program,” she added. Welcoming visits from various schools is FMIPA UGM’s contribution to advancing SDGs in the realm of quality education for the future generation. It underscores the commitment to fostering excellence in the field of science through partnerships between higher education institutions and educational entities, preparing a distinguished generation for the challenges ahead.

Keywords: students, researchers, students, high school, Budi Mulya High School

Humas FMIPA UGM | Febriska Noor Fitriana

UGM Students Unveil Electric Motorcycle with 57% Domestic Content

Januari 11, 2024

The Gasbadra team at UGM has spearheaded research and development in Indonesia, focusing on creating electric motorcycles with an impressive 57.42% domestic component level (TKDN).

Dhamar Gumilang Panggayuh, the Gasbadra’s engineer, proudly shared the team’s achievement during a press discussion at the UGM Faculty of Mathematics and Natural Sciences on Thursday (Jan. 4).

“Our electric motor boasts a TKDN of 57.42%, surpassing the government’s target of 50% TKDN,” he declared.

The evolution of the electric motor has been ongoing since 2022, with the team continuously advancing various components under the guidance of the UGM Computer Science and Electronics Department lecturers. The project also receives support from PLN.

The Gasbadra team, led by Wisnu Aryo Jatmiko, has members Gilang Rizky Yunanto, Ferdian Arvin Nayandra, Alfahri Rifki Fahrezi, Heva Adlli Wijaya, Stefano Aldo Budi Satria, Rayhan Tegar Pamungkas, Muhammad Fakhri Ajrillah, Yuta Ilham Nugroho, Aulia Malik, Dhamar Gumilang Panggayuh, dan Faiz Yuda Anggoro–all are Electronics and Instrumentation students.

They diligently worked on crafting electric motorcycles to combat exhaust emissions from conventional fuel-based vehicles.

The team has delved into multifaceted research encompassing the frame, body, powertrain, and electric vehicle electronics, including the battery pack, power distribution, and BLDC controller.

“In our battery pack, we’ve incorporated a battery management system equipped with over-current, over-voltage, and short-circuit protection features to ensure battery safety,” explained Panggayuh.

Beyond safety, the Gasbadra team has prioritized efficiency and smooth starts for their electric motor. The team’s initiative aligns seamlessly with Sustainable Development Goal 7, which aims to achieve clean and affordable energy.

“In terms of electrical efficiency, our developed motor excels,” remarked Panggayuh.

Yuta Ilham Nugroho, another team member, highlighted that their electric motor’s range is comparable to other models on the market. However, it outshines competitors in producing a more powerful maximum output.

The team’s mid-drive DC brushless electric motor operates at 72V with a maximum current of 40A, delivering an impressive torque of 45Nm at 3000rpm and reaching speeds of 65-70 km/h with a max rpm of 4800.

The Gasbadra team has introduced two driving modes: eco mode and sport mode. In eco mode, the motor can cover an estimated 40 km on a single charge, emphasizing battery life.

On the other hand, sport mode prioritizes swift acceleration for a faster reach to the maximum speed. The estimated coverage in sport mode is up to 30 km.

“The fundamental difference in each mode lies in the acceleration curve. Sport mode reaches the maximum speed faster, while eco mode prioritizes battery life, offering smoother initial acceleration ideal for urban areas with flat terrain,” explained Nugroho.

The team has implemented a more responsive regenerative braking system in eco mode. When the throttle is released, regen brake activation produces reverse current, recharging the battery. The battery specifications include 84V 20Ah, requiring six to seven hours for a full charge.

“This electric motorcycle features a robust scrambler design, exuding a masculine aura tailored for terrain exploration. With a dual-purpose capability for road and off-road use,” he concluded.

Author: Ika

Photographer: Firsto

Source: https://ugm.ac.id/en/news/ugm-students-unveil-electric-motorcycle-with-57-domestic-content/

Accreditation Excellence Achieved, Department of Physics FMIPA UGM Captivates Assessors with Physics and Geophysics Program Quality

Januari 3, 2024

Concluding the year with elation, the Department of Physics FMIPA UGM secured outstanding accreditation from LAMSAMA (Independent Accreditation Institute for Natural Sciences and Formal Sciences). The accreditation criteria include vision, mission, goals/targets; governance and cooperation; students; human resources; finance, facilities, and infrastructure; education; research; community service; and the achievements of the tridharma (the three pillars of higher education). The accreditation process took place over four days, starting with a visitation and concluding with the signing accreditation agreement on Tuesday, December 19^th, 2023 at the Department of Physics building.

Dr. Eddy Hartantyo, M.Si., the Secretary of the Department of Physics, directly accompanied the accreditation activities. He conveyed various positive impressions from the assessors regarding the institution’s efforts to improve the program’s quality continuously. This is evident in various research and innovations developed, the presence of relatively rare laboratory equipment, a career center for student career preparation, and the availability of discussion rooms for students and lecturers. “In the laboratory, there are manually operated tools, not computer-based ones. These tools stimulate the instinct and sensitivity of students in research. Then, there is a common room used for gatherings and discussions. There is a place to make coffee and a pantry similar to those in Europe. Furthermore, our library is like those in foreign universities with various components. In addition, there is a career center for students to prepare for their future careers,” Eddy explained.

The efforts of all personnel, both from the Geophysics and Physics programs, bore fruit. On 28^th December 2023, both programs received the “excellent” predicate with numbers 138/SK/LAMSAMA/Akred/S/XII/2023 for the Geophysics program and number 136/SK/LAMSAMA/Akred/S/XII/2023 for the Physics program. The accreditation is valid until 28^th December 2028 (for 5 years). In this regard, Eddy stated that this accreditation is important. “We now know the weaknesses, strengths, and opportunities that can be planned for the future. Hopefully, we can further improve research with downstream systems such as the Gamadu (seismometer),” Eddy clarified.

Forward-looking expectations were also expressed by the Dean of the Faculty of Mathematics and Natural Sciences UGM, Prof. Dr.Eng. Kuwat Triyana, M.Si. “We aspire to evolve into a department characterized by excellence and productivity, encompassing stellar achievements in research, scholarly journals, and the introduction of innovative products and research ventures into the market,” he explained. The accreditation sought by the Department of Physics is one implementation of SDGs in the field of quality education, innovation, and partnerships through efforts to improve the quality of education, develop research and innovation, and expand cooperation with various partners in preparing the best talents from the Department of Physics.

Humas FMIPA UGM | Febriska Noor Fitriana