eprintid: 137360 rev_number: 74 eprint_status: archive userid: 217404 dir: disk0/00/13/73/60 datestamp: 2025-09-15 07:18:54 lastmod: 2025-09-15 07:18:54 status_changed: 2025-09-15 07:18:54 type: thesis metadata_visibility: show creators_name: Raihan Anwar As'ad, - creators_name: Deden Pradeka, - creators_name: Zahra Khaerunnisa, - creators_nim: NIM2106506 creators_nim: NIDN0016088906 creators_nim: NIDN0011119403 creators_id: raianwr@upi.edu creators_id: dedenpradeka@upi.edu creators_id: zahrakhae@upi.edu contributors_type: http://www.loc.gov/loc.terms/relators/THS contributors_type: http://www.loc.gov/loc.terms/relators/THS contributors_name: Deden Pradeka, - contributors_name: Zahra Khaerunnisa, - contributors_nidn: NIDN0016088906 contributors_nidn: NIDN0011119403 contributors_id: dedenpradeka@upi.edu contributors_id: zahrakhae@upi.edu title: RANCANG BANGUN APLIKASI WEB BERBASIS CLOUD UNTUK KEAMANAN FILE MENGGUNAKAN ALGORITMA AES-256 DAN DEFLATE ispublished: pub subjects: L1 subjects: QA75 subjects: QA76 subjects: T1 divisions: T.KOMP_S1_TSK full_text_status: restricted keywords: Keamanan File, Deflate, AES-256, Cloud, Google Cloud Platform, File security note: https://scholar.google.com/citations?hl=en&user=sHb6L90AAAAJ ID SINTA Dosen Pembimbing: Deden Pradeka: 6680849 Zahra Khaerunnisa: 6923723 abstract: Perkembangan teknologi informasi yang sangat pesat telah mengubah cara individu dan organisasi menyimpan, mengakses, serta membagikan informasi. Di tengah transformasi digital ini, keamanan data menjadi aspek penting yang tidak dapat diabaikan, terutama dengan meningkatnya serangan siber dan pergeseran penyimpanan menuju sistem yang dapat diakses melalui internet. Tantangan utama yang muncul adalah bagaimana menjaga keamanan data digital (file) agar tetap aman tanpa menyebabkan peningkatan ukuran file secara signifikan. Penelitian ini bertujuan untuk mengembangkan sebuah aplikasi web berbasis cloud yang mengintegrasikan algoritma Advanced Encryption Standard (AES-256) untuk menjaga kerahasiaan file dan algoritma Deflate untuk mengoptimalkan ukuran file. Sistem dibangun pada Google Cloud Platform (GCP) dengan memanfaatkan layanan Cloud Run, Firestore, dan Cloud Storage. Hasil pengujian menggunakan metode Black-Box Testing menunjukkan seluruh fitur berjalan sesuai fungsinya. Hasil pengujian menunjukkan bahwa algoritma Deflate mampu memberikan efisiensi penyimpanan dengan rata-rata space saving sebesar 77,12% pada format file .csv, 11,06% pada format file .pdf, 4,22% pada format file .docx, dan 3,61% pada format file .pptx. Penerapan AES-256 setelah kompresi terbukti tidak menambah ukuran file secara signifikan, sehingga efisiensi penyimpanan tetap terjaga. Analisis Korelasi Pearson pada seluruh format file yang diuji menunjukkan nilai sangat mendekati nol, yang termasuk kategori sangat rendah atau tidak ada korelasi, sehingga pola data asli berhasil disamarkan. Hasil tersebut membuktikan bahwa integrasi Deflate dan AES-256 dalam aplikasi web ini efektif dalam meningkatkan efisiensi penyimpanan sekaligus menjaga keamanan file di lingkungan cloud. -------- The rapid development of information technology has changed the way individuals and organizations store, access, and share information. Amid this digital transformation, data security has become an important aspect that cannot be ignored, especially with the increase in cyber-attacks and the shift in storage towards systems that can be accessed via the internet. The main challenge that arises is how to maintain the security of digital data (files) while not significantly increasing file size. This research aims to develop a cloud-based web application that integrates the Advanced Encryption Standard (AES-256) algorithm to maintain file confidentiality and the Deflate algorithm to optimize file size. The system is built on Google Cloud Platform (GCP) utilizing Cloud Run, Firestore, and Cloud Storage services. Testing results using the Black-Box Testing method indicate that all features function as intended. Testing results show that the Deflate algorithm provides storage efficiency with an average space saving of 77.12% for .csv files, 11.06% for .pdf files, 4.22% for .docx files, and 3.61% for .pptx files. The application of AES-256 after compression was found not to significantly increase file size, thus maintaining storage efficiency. Pearson Correlation Analysis on all tested file formats showed values very close to zero, which falls into the category of very low or no correlation, indicating that the original data patterns were successfully obfuscated. These results demonstrate that the integration of Deflate and AES-256 in this web application is effective in improving storage efficiency while maintaining file security in a cloud environment. date: 2025-08-19 date_type: published institution: Universitas Pendidikan Indonesia department: KODEPRODI56202#Teknik Komputer _S1 thesis_type: other thesis_name: other official_url: https://repository.upi.edu/ citation: Raihan Anwar As'ad, - and Deden Pradeka, - and Zahra Khaerunnisa, - (2025) RANCANG BANGUN APLIKASI WEB BERBASIS CLOUD UNTUK KEAMANAN FILE MENGGUNAKAN ALGORITMA AES-256 DAN DEFLATE. S1 thesis, Universitas Pendidikan Indonesia. document_url: http://repository.upi.edu/137360/8/S_TEKOM_2106506_Title.pdf document_url: http://repository.upi.edu/137360/2/S_TEKOM_2106506_Chapter1.pdf document_url: http://repository.upi.edu/137360/3/S_TEKOM_2106506_Chapter2.pdf document_url: http://repository.upi.edu/137360/4/S_TEKOM_2106506_Chapter3.pdf document_url: http://repository.upi.edu/137360/5/S_TEKOM_2106506_Chapter4.pdf document_url: http://repository.upi.edu/137360/6/S_TEKOM_2106506_Chapter5.pdf document_url: http://repository.upi.edu/137360/7/S_TEKOM_2106506_Appendix.pdf