The research aim is to hide audio files through video media using the EOF (End of File) method and Rivest Code 4 encryption. The EOF (End of File) method is used as a message-hiding technique in steganography by inserting a message at the end of the container media file. Audio files are encrypted using Rivest Code 4 (RC4) and inserted at the end of the video file as container media. The results of this study are android-based steganography applications that can maintain the confidentiality of audio files while maintaining the quality of video files as container media.
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