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Digital watermarking merupakan teknik penyisipan informasi tersembunyi ke dalam data digital tanpa mengubah tampilan aslinya secara kasat mata.

Bogor, Jawa Barat (Indonesia Window) – Badan Riset dan Inovasi Nasional (BRIN) mengembangkan inovasi teknologi digital watermarking sebagai bagian penting dalam pengembangan riset keamanan data.

Peneliti Pusat Riset Kecerdasan Artifisial dan Keamanan Siber BRIN, Didi Rosiyadi, menekankan pentingnya peran watermarking dalam menjaga keamanan informasi di tengah meningkatnya ancaman kebocoran dan manipulasi data.

“Teknologi watermarking menjadi salah satu solusi menjaga integritas dan keamanan informasi,” kata Didi, dalam kegiatan kunjungan mahasiswa Universitas Bina Sarana Informatika, di BRIN Bandung, Kamis (4/6).

Digital watermarking merupakan teknik penyisipan informasi tersembunyi ke dalam data digital tanpa mengubah tampilan aslinya secara kasat mata. Teknologi ini memungkinkan sebuah data, baik berupa teks, gambar, maupun media digital lainnya, memiliki identitas khusus yang dapat digunakan untuk membuktikan keaslian serta kepemilikan.

Salah satu metode yang digunakan dalam riset ini adalah zero-width unicode watermarking, yaitu teknik penyisipan karakter tak terlihat yang tidak memengaruhi struktur maupun tampilan teks.

Menurut Didi, digital watermarking memungkinkan untuk menyisipkan identitas pada data tanpa merusak struktur aslinya. Sehingga, keaslian dan kepemilikan tetap dapat dibuktikan.

“Teknologi ini menjadi sangat relevan ketika data digital semakin mudah disalin dan disebarluaskan tanpa kontrol yang memadai,” tuturnya.

Tidak hanya diterapkan pada data teks, teknologi watermarking juga dikembangkan untuk citra digital menggunakan metode discrete cosine transform (DCT). Metode ini memungkinkan penyisipan watermark ke dalam gambar tanpa mengurangi kualitas visual secara signifikan.

Dengan pendekatan ini, watermark tetap tersembunyi namun dapat dideteksi ketika diperlukan. Misalnya, dalam proses verifikasi keaslian data atau penelusuran sumber kebocoran.

Teknologi ini membuka peluang integrasi dengan sistem keamanan lain seperti enkripsi dan blockchain. “Kombinasi berbagai teknologi tersebut diharapkan mampu menciptakan sistem perlindungan data yang lebih komprehensif, mulai dari proses penyimpanan, distribusi, hingga verifikasi informasi digital,” ujarnya.

Selain itu, riset ini menjadi bagian dari upaya BRIN meningkatkan kesadaran akan pentingnya keamanan data di kalangan akademisi maupun masyarakat umum. Dengan semakin berkembangnya ekosistem digital, kebutuhan terhadap teknologi yang mampu melindungi data menjadi semakin krusial dan tidak dapat diabaikan.

Didi berharap hasil riset digital watermarking dapat dimanfaatkan di berbagai sektor, mulai dari pendidikan, industri kreatif, hingga layanan publik digital.

“Teknologi ini diharapkan menjadi solusi keamanan siber yang tidak hanya dikembangkan di tingkat penelitian, tetapi diterapkan secara nyata untuk melindungi data dan karya digital dari berbagai ancaman,” tutupnya.

Laporan: Redaksi

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