Hendro Wijayanto | STMIK SINAR NUSANTARA SURAKARTA (original) (raw)
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Many photographic images that are published to particular interests. This makes it more and more ... more Many photographic images that are published to particular interests. This makes it more and more copyright piracy of images. In this study will make a tools and methods that can be used to protect the copyright of the digital image. The most important part of the digital image is a color image composition or texture images and EXIF metadata information contained therein. Image color and texture of the image reflects the beauty of the digital image. While reflecting the EXIF data information from digital image. In the science of cryptography many common cryptographic algorithms to secure data or information from copyright piracy. One of them is the eXtended Tiny Encryption Algorithm (XTEA) which is a cryptographic technique and operates in 64-bit block size and a 128bit key length. EXIF metadata in encrypted with XTEA, then insert it into End of File image, and delete the original EXIF, is expected to secure a digital image of the copyright piracy without changing primary data image. From the results of the encryption-decryption process, EXIF information and pixel digital image can be protected. There is a shrinkage of the size of the file capacity of-25.15% from size of original image, because image have a change in the type of EXIF metadata to JFIF format. This change only in bits header image, so that 74.85% of primary data bits are not changed.
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Data and information security technique is a way to keep an object confidential. eXchangable Imag... more Data and information security technique is a way to keep an object confidential. eXchangable Image File Format (EXIF) Metadata is data information about digital image. In the digital forensic investigation, this is very useful for copyright security or safeguarding digital evidence. Steganography and cryptography techniques have been widely used to overcome these problem. However, from the research that has been done in terms of security EXIF of metadata digital image photography, there are still some weaknesses. Among them is the depreciation of the digital image size after decryption. Since the standard EXIF metadata treatmens released by JEIDA and CIPA have different characteristic with JFIF metadata. A null value will be deemed to be the content with a value of 1 in EXIF standard. While in JFIF metadata model, the value of null is considered to be worth 0 (zero). This is make the EXIF metadata security process is shrinking of-25,15% from the original size. With the optimizing null value before encryption, the same metadata will be obtained between original image and after decryption. The null value will be replaced with an empty string (it's worth 1) before encryption. Results from the model obtained an average of-1,51% depreciation of the original digital image size.Therefore, this technique can optimize the digital image copyright protection. I. PENDAHULUAN Citra digital merupakan salah satu jenis barang bukti digital yang memiliki tingkat resiko manipulasi dan kehilangan informasi yang sangat tinggi. Data citra digital (metadata) memiliki informasi yang sangat kompleks, meliputi informasi perangkat pengambilan gambar sampai dengan waktu kapan diambil (Zhou et al., 2016). Sehingga dapat dikatakan metadata citra digital tersebut dapat digunakan sebagai hak cipta. Dalam ranah digital forensik, selain konten citra, metadata dapat digunakan sebagai barang bukti digital di persidangan. Mudahnya manipulasi dari sisi metadata dan konten citra inilah yang menjadi celah untuk melemahkan kedudukan citra digital sebagai alat bukti di persidangan. Banyak sekali cara untuk mengamankan metadata, mulai dari teknik steganografi, kriptografi sampai dengan watermarking. Kombinasi pengamanan eXchangable Image File Format (EXIF) metadata dengan teknik steganografi dan kriptografi juga telah dilakukan penelitian dengan hasil hampir sempurna dalam mengamankan metadata citra digital. Hal ini disebabkan antara citra digital asli, citra digital setelah dienkripsi, dan citra digital setelah dilakukan dekripsi, memiliki nilai histogram sama, serta dapat mengamankan keseluruhan metadata. Akan tetapi dalam penelitian tersebut, ukuran citra digital mengalami penyusutan sebesar-25.15%, sehingga hanya dapat digunakan sebagai perlindungan hak cipta citra digital saja. Untuk dapat digunakan sebagai perlindungan barang bukti digital, nilai hashing citra asli dan citra setelah dekripsi harus sama (Wijayanto et al., 2016). Penyusutan dalam penelitian tersebut dikarenakan perbedaan tipe header metadata citra asli dengan citra setelah dekripsi, yaitu eXchangable Image File Format (EXIF) menjadi JPEG File Interchange Format (JFIF) (Wijayanto et al., 2016). Ini disebabkan
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Many photographic images that are published to particular interests. This makes it more and more ... more Many photographic images that are published to particular interests. This makes it more and more copyright piracy of images. In this study will make a tools and methods that can be used to protect the copyright of the digital image. The most important part of the digital image is a color image composition or texture images and EXIF metadata information contained therein. Image color and texture of the image reflects the beauty of the digital image. While reflecting the EXIF data information from digital image. In the science of cryptography many common cryptographic algorithms to secure data or information from copyright piracy. One of them is the eXtended Tiny Encryption Algorithm (XTEA) which is a cryptographic technique and operates in 64-bit block size and a 128bit key length. EXIF metadata in encrypted with XTEA, then insert it into End of File image, and delete the original EXIF, is expected to secure a digital image of the copyright piracy without changing primary data image. From the results of the encryption-decryption process, EXIF information and pixel digital image can be protected. There is a shrinkage of the size of the file capacity of-25.15% from size of original image, because image have a change in the type of EXIF metadata to JFIF format. This change only in bits header image, so that 74.85% of primary data bits are not changed.
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Many photographic images that are published to particular interests. This makes it more and more ... more Many photographic images that are published to particular interests. This makes it more and more copyright piracy of images. In this study will make a tools and methods that can be used to protect the copyright of the digital image. The most important part of the digital image is a color image composition or texture images and EXIF metadata information contained therein. Image color and texture of the image reflects the beauty of the digital image. While reflecting the EXIF data information from digital image. In the science of cryptography many common cryptographic algorithms to secure data or information from copyright piracy. One of them is the eXtended Tiny Encryption Algorithm (XTEA) which is a cryptographic technique and operates in 64-bit block size and a 128bit key length. EXIF metadata in encrypted with XTEA, then insert it into End of File image, and delete the original EXIF, is expected to secure a digital image of the copyright piracy without changing primary data image. From the results of the encryption-decryption process, EXIF information and pixel digital image can be protected. There is a shrinkage of the size of the file capacity of-25.15% from size of original image, because image have a change in the type of EXIF metadata to JFIF format. This change only in bits header image, so that 74.85% of primary data bits are not changed.
Bookmarks Related papers MentionsView impact
Data and information security technique is a way to keep an object confidential. eXchangable Imag... more Data and information security technique is a way to keep an object confidential. eXchangable Image File Format (EXIF) Metadata is data information about digital image. In the digital forensic investigation, this is very useful for copyright security or safeguarding digital evidence. Steganography and cryptography techniques have been widely used to overcome these problem. However, from the research that has been done in terms of security EXIF of metadata digital image photography, there are still some weaknesses. Among them is the depreciation of the digital image size after decryption. Since the standard EXIF metadata treatmens released by JEIDA and CIPA have different characteristic with JFIF metadata. A null value will be deemed to be the content with a value of 1 in EXIF standard. While in JFIF metadata model, the value of null is considered to be worth 0 (zero). This is make the EXIF metadata security process is shrinking of-25,15% from the original size. With the optimizing null value before encryption, the same metadata will be obtained between original image and after decryption. The null value will be replaced with an empty string (it's worth 1) before encryption. Results from the model obtained an average of-1,51% depreciation of the original digital image size.Therefore, this technique can optimize the digital image copyright protection. I. PENDAHULUAN Citra digital merupakan salah satu jenis barang bukti digital yang memiliki tingkat resiko manipulasi dan kehilangan informasi yang sangat tinggi. Data citra digital (metadata) memiliki informasi yang sangat kompleks, meliputi informasi perangkat pengambilan gambar sampai dengan waktu kapan diambil (Zhou et al., 2016). Sehingga dapat dikatakan metadata citra digital tersebut dapat digunakan sebagai hak cipta. Dalam ranah digital forensik, selain konten citra, metadata dapat digunakan sebagai barang bukti digital di persidangan. Mudahnya manipulasi dari sisi metadata dan konten citra inilah yang menjadi celah untuk melemahkan kedudukan citra digital sebagai alat bukti di persidangan. Banyak sekali cara untuk mengamankan metadata, mulai dari teknik steganografi, kriptografi sampai dengan watermarking. Kombinasi pengamanan eXchangable Image File Format (EXIF) metadata dengan teknik steganografi dan kriptografi juga telah dilakukan penelitian dengan hasil hampir sempurna dalam mengamankan metadata citra digital. Hal ini disebabkan antara citra digital asli, citra digital setelah dienkripsi, dan citra digital setelah dilakukan dekripsi, memiliki nilai histogram sama, serta dapat mengamankan keseluruhan metadata. Akan tetapi dalam penelitian tersebut, ukuran citra digital mengalami penyusutan sebesar-25.15%, sehingga hanya dapat digunakan sebagai perlindungan hak cipta citra digital saja. Untuk dapat digunakan sebagai perlindungan barang bukti digital, nilai hashing citra asli dan citra setelah dekripsi harus sama (Wijayanto et al., 2016). Penyusutan dalam penelitian tersebut dikarenakan perbedaan tipe header metadata citra asli dengan citra setelah dekripsi, yaitu eXchangable Image File Format (EXIF) menjadi JPEG File Interchange Format (JFIF) (Wijayanto et al., 2016). Ini disebabkan
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Many photographic images that are published to particular interests. This makes it more and more ... more Many photographic images that are published to particular interests. This makes it more and more copyright piracy of images. In this study will make a tools and methods that can be used to protect the copyright of the digital image. The most important part of the digital image is a color image composition or texture images and EXIF metadata information contained therein. Image color and texture of the image reflects the beauty of the digital image. While reflecting the EXIF data information from digital image. In the science of cryptography many common cryptographic algorithms to secure data or information from copyright piracy. One of them is the eXtended Tiny Encryption Algorithm (XTEA) which is a cryptographic technique and operates in 64-bit block size and a 128bit key length. EXIF metadata in encrypted with XTEA, then insert it into End of File image, and delete the original EXIF, is expected to secure a digital image of the copyright piracy without changing primary data image. From the results of the encryption-decryption process, EXIF information and pixel digital image can be protected. There is a shrinkage of the size of the file capacity of-25.15% from size of original image, because image have a change in the type of EXIF metadata to JFIF format. This change only in bits header image, so that 74.85% of primary data bits are not changed.
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact