AbstrakSteganografi merupakan teknik yang digunakan utuk menyembunyikan data ke dalam data lainnya. Pada Penelitian ini data yang disembunyikan atau disisipkan yaitu berupa pesan teks dan media penampung yang digunakan yaitu citra digital biner dan citra digital greyscale. Salah satu metode pada steganografi yaitu End of File. Pada Penelitian ini dirancang suatu sistem penyisipan data yang mana data akan disisipkan pada baris terakhir media penampung. Tujuan pembuatan Penelitian ini guna mendapatkan hasil citra stego yang baik yang dapat ditunjukkan dengan nilai PSNR. Nilai PSNR yang dihasilkan pada citra stego biner dan greyscale yaitu 100% diatas 20 dB. Berdasarkan hasil pengujian steganografi dengan variasi ukuran citra 592x525, 200x196 dan 75x98 yang akan disisipkan pesan dengan variasi panjang pesan sebanyak 7 karakter, 195 karakter dan 524 karakter, hasil dari penyisipan pesan kedalam citra akan menghasilkan empat format citra yaitu BMP, JPEG, PNG dan TIFF. Hasil desteganografi menunjukkan bahwa ketika pengungkapan pesan dilakukan tanpa adanya manipulasi citra, tingkat keberhasilan mencapai 75% . AbstractSteganography is a technique used to hide data into the container media. In this Final Project the data is hidden or inserted in the form of text messages and media container used is a binary digital image and greyscale digital image. One method of steganography is End of File. In this Final Project designed a system of data insertion in which the data will be inserted in the last line of the container data. The purpose of this Final Project in order to get good stego image results that can be shown by the value of PSNR. The resulting PSNR value in the greyscale stego image is 100% above 20 dB and in the 75% stego binary image above 12 dB. Based on the results of steganography testing with image size variation of 592x525, 200x196 and 75x98 which will be inserted message with 7 characters character variation, 195 characters and 524 characters, the result of message insertion into image will produce four image format that is BMP, JPEG, PNG and TIFF.The results of desteganografi indicate that when the disclosure of the message done without image manipulation, the success rate reached 75%.
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