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_aMaurice Rubien C. Antonio, Raphael George A. Mendoza.
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_aEnhancement of L. Voleti LSB technique applied to image steganography.
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_aunmediated
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_aUndergraduate Thesis : (Bachelor Science major in Computer Science) - Pamantasan ng Lungsod ng Maynila, 2024.
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_aABSTRACT: In today's world the progress of communication technology plays a role in our everyday lives. The internet and the conversion of data into forms have significantly expanded the sharing of information leading to a fast-paced growth. Despite having secure methods available, safeguarding data remains a top priority. This study aims to improve the security and durability of data transmission by combining stenography and cryptography techniques. Stenography, which involves hiding messages within another medium and cryptography which entails encrypting messages using keys are both effective ways to ensure data security. The research delves into combinations of algorithms that integrate stenography examining their impact on enhancing security. It categorizes methods based on technical and non-technical aspects as well as their domains. Moreover, it underscores the importance of data security in media formats such as images, videos and audio. In analyzing message lengths noticeable character patterns were observed in both Vigenere Cipher and Elliptic Curve Cryptography. In short messages s was prominent in the Vigere Cipher according for 26.3% of accurences while Elliptic Curve Cryptography showed a prevalence of t at 3.9%. Medium length messages continued to show dominance of s in the Vigenere Cipher at 22.5% while Elliptic Curve Cryptography highlighted p as a character at 4.3%. Lastly, longer messages maintained the prevalence of s in the Vigenere Cipher at 24.3% with v emerging as dominant in Elliptic Curve Cryptography at 3.9%. These findings show that combining stenography and cryptography methods can greatly enhance the protection of multimedia data.
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