PENGEMBANGAN DOUBLE ENKRIPSI ALGORITMA VIGINERE CHIPHER DAN TRIPLE CULUMNER UNTUK PENGAMANANFILE GAMBAR
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Abstract
Data security, particularly for image files, is increasingly important in the digital era to protect information from unauthorized access and other threats. This study proposes a combination of the Vigenère Cipher and Triple Columnar Transposition algorithms for securing image files. The Vigenère Cipher algorithm encodes data through polyalphabetic substitution, while the Triple Columnar Transposition scrambles the data sequence to enhance confidentiality. The proposed encryption system employs a super encryption approach, where data is encrypted in layers using both algorithms. The research results show that this method improves data efficiency and security against cryptanalysis attacks while preserving the integrity of image files. Therefore, this approach is expected to provide a significant solution for securing digital data in various applications.
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