PERANCANGAN DAN ANALISIS SISTEM KEAMANAN DOKUMEN DIGITAL BERBASIS KRIPTOGRAFI HIBRIDA CAMELLIA-128 DAN BLAKE3

Nabila, Putri (2026) PERANCANGAN DAN ANALISIS SISTEM KEAMANAN DOKUMEN DIGITAL BERBASIS KRIPTOGRAFI HIBRIDA CAMELLIA-128 DAN BLAKE3. Diploma thesis, Politeknik Negeri Sriwijaya.

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Abstract

The increasing threats to digital document security have created a need for systems capable of preserving data confidentiality and integrity. This study aims to design and implement a web-based digital document security system called SecureVault by integrating the Camellia-128 and BLAKE3 algorithms using a hybrid cryptographic approach with a Hash-then-Encrypt scheme. Camellia-128 in CBC mode is used to encrypt documents, while BLAKE3 is applied in the secret key generation and hashing processes. The system was developed using a client-server architecture with Vue 3 on the frontend, Express.js and Node.js on the backend, and MySQL for metadata storage. The system also provides user authentication, document management, and Telegram Bot API integration as a medium for distributing the secret key to users who have linked their Telegram accounts. Testing was conducted through functional testing, file integrity testing, round-trip testing, encryption and decryption performance testing, and Telegram integration testing. The results showed that all main system functions achieved a 100% success rate. Integrity testing demonstrated that the original and decrypted files had identical SHA-256 values, while the encrypted file produced a different hash value. The round-trip test on a 531,072-byte file successfully restored the file to its original size of 531,072 bytes without data loss. Performance evaluation showed an average encryption time of 132.4 ms and an average decryption time of 121.7 ms, while Telegram notification delivery achieved a 100% success rate. These results demonstrate that SecureVault is capable of protecting the confidentiality and integrity of digital documents while providing good performance in the encryption and decryption processes.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Kriptografi hibrida, Camellia-128, BLAKE3, keamanan dokumen digital, enkripsi, hashing, integritas data
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Telecommunication Engineering > Undergraduate Theses
Depositing User:	Pustaka Teknik Elektro
Date Deposited:	21 Sep 2026 14:00
Last Modified:	21 Sep 2026 14:00
URI:	http://eprints.polsri.ac.id/id/eprint/26769

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