Jurnal TeknoIf

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Creator Minarni, Minarni; Institut Teknologi Padang
Fernando, Andre Gesta; Institut Teknologi Padang
Subject implementation, end of file, steganography, GIF image
Description  AbstractIn maintaining the confidentiality of information or data from sabotage, thieves or from unauthorized parties, can take a step by hiding messages on a media that can be said by steganography.One of the media that can be used in hiding messages is GIF image, where GIF image has a good abilityto insert messages, because the GIF image itself does not experience changes after the message is insertedbecause the GIF image is lossless. The End Of File (EoF) algorithm is one of the algorithms used in steganography by adding dataor secret messages at the end of the file. Calculation of file size that has been inserted data is the same asthe size of the file before inserting data plus the size of the secret data that has been changed to encodingthe file. The EoF algorithm has the advantage of being able to hide an unlimited number of messages. Based on the results of the tests carried out, the GIF that has been inserted messages from 50characters to 100000 characters has not changed. Based on the steganography criteria with EoFalgorithm recovery testing is good done on GIF images, testing the GIF image robustness is not resistantto manipulation, and for recovery message testing can be returned properly without manipulation on thestego GIF image.Keyword - implementation, end of file, steganography, GIF image IntisariDalam menjaga kerahasiaan informasi atau data dari sabotase, pencuri atau dari pihak yang tidak berwenang, dapat dilakukan dengan menyembunyikan pesan pada sebuah media yang dikenaldengan steganografi. Salah satu media yang dapat digunakan dalam menyembunyikan pesan yaitu citraGIF, dimana citra GIF memiliki kemampuan yang bagus dalam menyisipkan pesan, karena citra GIFsendiri tidak mengalami perubahan setelah disisipkan pesan karena citra GIF yang bersifat lossless. Algoritma End Of File (EoF) merupakan salah satu algoritma yang digunakan dalamsteganografi dengan cara menambahkan data atau pesan rahasia pada akhir file. Perhitungan ukuranfile yang sudah disisipkan data sama dengan ukuran file sebelum disisipkan data ditambah ukuran datarahasia yang telah diubah mejadi encoding file. Algoritma EoF mempunyai kelebihan dapatmenyembunyikan pesan dalam jumlah yang tidak terbatas. Berdasarkan hasil pengujian yang dilakukan pada GIF yang telah disisipkan pesan dari 50karakter sampai 100000 karakter tidak mengalami perubahan. Berdasarkan kriteria steganografi denganalgoritma EoF pengujian recovery bagus dilakukan pada citra GIF, pengujian robustness citra GIF tidaktahan terhadap manipulasi, dan untuk pengujian recovery pesan dapat dikembalikan dengan baik tanpadilakukan manipulasi pada citra stego GIF.Kata kunci - implementasi, end of file, steganografi, citra GIF
Publisher ITP Press - Institut Teknologi Padang
Date 2020-04-29
Type info:eu-repo/semantics/article
Peer-reviewed Article
Format application/pdf
Source Jurnal Teknoif; Vol 8, No 1 (2020): TEKNOIF April 2020; 25-31
Jurnal Teknoif - ISSN 2338-2724; Vol 8, No 1 (2020): TEKNOIF April 2020; 25-31
Language eng
Rights Authors contributing to the TEKNOIF Journal agree to the following requirements:The author owns the copyright and gives the first publication rights journal with the work simultaneously licensed under the Creative Commons Attribution 4.0 International License which allows others to share the work with the acknowledgment of the authorship of the work and the initial publication in the TEKNOIF JournalThe author may enter into separate additional contractual agreements for the non-exclusive distribution of the published journal version of the work (for example, post it to an institutional repository or publish it in a book), with recognition of its initial publication in the TEKNOIF JournalAuthors are permitted and supported to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as this can lead to productive exchanges, as well as earlier and larger quotations from published works

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