학술논문
삼성 스마트폰의 음성 녹음 어플리케이션에 의해 녹음된 오디오 파일에 대한 위변조 여부 분석 방법
Forgery Analysis Method for Audio Recordings Generated by Voice Recorder Application from Samsung Smartphones
Forgery Analysis Method for Audio Recordings Generated by Voice Recorder Application from Samsung Smartphones
Document Type
Article
Text
Text
Author
박남인; 이지우; 임성호; 김진환; 임재성; 이정환; 정도준; 김지훈; 변준석; 전옥엽; 나기현; Nam In Park; Ji Woo Lee; Seong Ho Lim; Jin-Hwan Kim; Jae Sung Lim; Jung Hwan Lee; Do Joon Jung; Ji-Hun Kim; Jun Seok Byun; Oc-Yeub Jeon; Gi-Hyun Na
Source
한국법과학회지, 11/30/2022, Vol. 23, Issue 2, p. 77-87
Subject
Language
English
ISSN
1598-0715
Abstract
Audio recordings are used widely as crucial evidence due to the popularity of smartphones. However, the digital evidence submitted voluntarily may be questioned for its authentication. Since most smartphones provide the function of digital editing files, they could be exposed to crime as being edited maliciously. Primarily, it could be severe in the case of voluntary submission via information and communications networks. This paper proposed the forensic method for authentication of audio recordings generated by the Voice Recorder application from Samsung smartphones. First, we analyzed and compared the file structures and timestamps of audio recordings between the normal state without manipulation and the manipulated state. Then, we analyzed the spectrogram of audio recordings. Finally, by analyzing the timestamps of the media-log for audio recordings, we confirmed the authentication method for the audio recordings forensically.