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All Journal Jurnal Informatika dan Teknik Elektro Terapan METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi METHODIKA: Jurnal Teknik Informatika dan Sistem Informasi JURNAL TEKNOLOGI DAN ILMU KOMPUTER PRIMA (JUTIKOMP) Jurnal Informatika Kaputama (JIK) Jurnal Pengabdian Masyarakat Borneo JTIK (Jurnal Teknik Informatika Kaputama) Jurnal Pengabdian Pada Masyarakat METHABDI Majalah Ilmiah METHODA TAMIKA: Jurnal Tugas Akhir Manajemen Informatika & Komputerisasi Akuntansi
Jamaluddin
Universitas Methodist Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Immunology & microbiology Languange, Linguistic, Communication & Media Medicine & Pharmacology Physics Public Health Social Sciences Other

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ANALISIS KINERJA ALGORITMA RSA PADA ENKRIPSI CITRA DIGITAL BERDASARKAN PARAMETER PSNR DAN MSE Jamaluddin; Manalu, Darwis Robinson; Hasugian, Paska Marto; Simamora, Roni Jhonson
METHODIKA: Jurnal Teknik Informatika dan Sistem Informasi Vol. 12 No. 1 (2026): Volume 12 Nomor 1 Tahun 2026
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/mtk.v12i1.5420

Abstract

Digital image security is an important issue in this era of increasingly massive multimedia-based data exchange, especially for sensitive information that requires a high level of protection. This study aims to analyze the performance of the Rivest Shamir Adleman (RSA) asymmetric cryptography algorithm in the digital image encryption process based on the Mean Squared Error (MSE) and Peak Signal-to-Noise Ratio (PSNR) parameters, as well as encryption and decryption times. The method used is a quantitative experiment on 30 digital images with varying resolutions (256×256, 512×512, and 1024×1024 pixels) and two RSA key lengths (1024-bit and 2048-bit). The test results show that the MSE value ranges from 0.001068 to 0.002620 and the PSNR value ranges from 75.08 to 78.34 dB, indicating that the decrypted images are of very high quality and close to the original images. However, the computation time increased significantly with increasing resolution and key length, with RSA 2048-bit taking almost twice as long as RSA 1024-bit. These findings show that the RSA algorithm is very effective in maintaining the integrity of digital images, but has limitations in terms of computational time efficiency, especially for high-resolution images. Therefore, a balance between security and performance is needed in practical implementation.
Co-Authors Adela Bintang Asari Alex Leo Nardo Sipayung Alexander Simanullang Alfina, Ommi Ananda Pratama Angely Sinaga Apriani Magdalena Sibarani Arina P. Silalahi Aritonang, Mendarissan Arthur Simanjuntak Azelia Sarah Dwi Artha Br. Tarigan, Emia Edi Ulina Mahdalena Christiani Sinaga Darwis R. Manalu Darwis Robinson Manalu Dimita Hemalli Premasari Purba Doli Hasibuan Edison Sagala Efrianses F. H. Sinaga El Rahmat Jaya Hulu Elda Rotio Harahap Elida Pane Elsya Secilia Margaretha Emma Rosinta Simarmata Endi Juli Anto Eva Julia Gunawati Harianja Eva Julia Gunawati Harianja Eva Julia Gunawati Harianja, Eva Julia Gunawati Eviyanti N. Purba Gea, Asaziduhu Gortap Lumbantoruan Harahap, Elda Rotio Harianja, Eva Julia G. Hasugian , Paska Marto Henri Yosua Pangihutan Hiras Sinaga Hutahean, Lisna Hutapea, Marlyna I. Ijonris, Yusuf Imelda S. Dumayanti Ira Mirantika Br. Ginting Jepryanta Natanael Brahmana Jonathan H. Saragih Jujur Marentha Nababan Junika Napitupulu Kartika Dewi Lian Adriawan Lidia Marisa Sianturi Lince R. Panataria Lisna Hutahean Lyna M. N. Hutapea M. Safii Manalu, Febrianisa Mutiara Marihot Gultom Marlyna I Hutapea Marpaung, Flora Melanthon Rumapea Melky Alessandro Purba Merry Anna Napitupulu, Merry Anna Moris Raichel Sitanggang Mufria J. Purba Muhammad Taufiq Rustam Mulatua P. Silalahi Mulatua Silalahi Naikson Fandier Saragih Nainggolan, Rena Nancy Lusiana Damanik Ndruru, Yufita Friska Nehemia Christian Boy Octania Togatorop Paiman Nababan Panjaitan, Calvin Nicolas Parangin-angin, Resianta Perangin-angin , Resianta Posma S. M. Lumbanraja Purba, Eviyanti N. Purba, Eviyanti Novita Reka Putri Halawa Rena Nainggolan Resianta Perangin-Angin Rijois I. E Saragih Rijois I. E. Saragih Rimbun Siringoringo Rimbun Siringoringo Rimbun Siringoringo, Rimbun Roni J. Simamora Sagala, Edison Saragih, Rijois Iboy E. Sembiring, Yasma Aprilyani Shara Asima Putri Sibarani Sianturi, Angel Maisya Sidabutar, Dewi Purnama Sihaloho, Senta Egrioni Simarmata, Ruth Elovani Sinambela Marzuki Sion Sela Simorangkir Sitanggang, Rini Inriani Katarina Sitorus, Hegi Audria Sofya C. Sitompul Stevani L. Z. Simanjuntak Stevani Laura Zois Br. Simanjuntak Syahputri, Nita Tarigan, Riandi Pratama Thomson J. Napitupulu Winda Silalahi Yosephine Sembiring Yosevina Tarigan Zalukhu, Delianus