IMPLEMENTASI SANDI HILL UNTUK PENYANDIAN CITRA
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https://doi.org/10.9744/informatika.3.1.pp.%201-5Keywords:
Hill's Code, Image, Relatively Prime.Abstract
Hill's code is one of text encoding technique. In this research, Hill's code is extended to image encoding. The image used is BMP 24 bit format. 2x2 and 3x3 matrices is used as a key. The results show that Hill's code is suitable for image whose RGB values vary highly. On the contrary, it is not suitable for less varied RGB images since its original pattern is still persisted in encrypted image. Hill's code for image encoding has also disadvantage in the case that the key matrix is not unique. However, for daily application, with good key matrix, Hill's code can be applied to encode image since it's process only deals with simple matrix operation so it become fast. Abstract in Bahasa Indonesia : Sandi Hill merupakan salah satu teknik penyandian teks. Dalam penelitian ini, pemakaian sandi Hill diperluas dari teks ke citra bertipe BMP 24 bit. Matriks yang dipakai berordo 2x2 dan 3x3. Hasil percobaan menunjukkan bahwa sandi Hill cocok untuk enkripsi citra dengan variasi nilai RGB antar piksel berdekatan yang tinggi (seperti foto), tapi tidak cocok untuk citra dengan variasi nilai RGB yang rendah (seperti gambar kartun) karena pola citra asli masih tampak dalam citra sandi. Sandi Hill juga memiliki kelemahan dalam hal tidak tunggalnya matriks kunci yang dapat dipakai. Akan tetapi untuk pemakaian biasa, dengan pemilihan matriks kunci yang baik, sandi Hill dapat dipakai untuk penyandian karena hanya melibatkan operasi matriks biasa sehingga prosesnya relatif cepat. Kata kunci: Sandi Hill, Citra, Relatif Prima.Downloads
Published
2004-06-18
How to Cite
Siang, J., & Lesar, R. S. (2004). IMPLEMENTASI SANDI HILL UNTUK PENYANDIAN CITRA. Jurnal Informatika, 3(1), pp. 1-5. https://doi.org/10.9744/informatika.3.1.pp. 1-5
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