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Sobari, Akmil Ibnu - One of the best experts on this subject based on the ideXlab platform.
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APLIKASI PENGIRIM EMAIL DENGAN PENERAPAN ENKRIPSI CAESAR CIPHER YANG TELAH DITINGKATKAN KEAMANANNYA MENGGUNAKAN ENKRIPSI ROW TRANSPOSITION CIPHER
2017Co-Authors: Sobari, Akmil IbnuAbstract:Kriptografi adalah seni menulis dan memecahkan suatu kode (Concise Oxford Dictionary, 2006). Kriptografi terbagi menjadi dua, yaitu kriptografi klasik dan kriptografi modern. Enkripsi Caesar Cipher merupakan teknik enkripsi kriptografi klasik yang tidak memiliki keamanan yang baik dalam pengenkripsiannya sebab pencarian kunci enkripsi dapat dilakukan dengan mudah menggunakan teknik Known Plaintext Attack ataupun Letter Frequency. Salah satu cara untuk meningkatkan keamanan pengenkripsian Caesar Cipher adalah menggunakan penggabungan dengan metode enkripsi lain yang memiliki keamanan yang baik. Teknik enkripsi kriptografi klasik dapat dikategorikan baik apabila pencarian kunci enkripsi tidak dapat dilakukan dengan metode Known Plaintext Attack ataupun Letter Frequency, sehingga pencarian kunci hanya dapat dilakukan dengan metode Brute Force Search. Teknik enkripsi kriptografi klasik yang baik salah satunya adalah Row Transposition Cipher, sehingga dapat digunakan untuk meningkatkan keamanan pengenkripsian Caesar Cipher. Pada penelitian ini, keamanan pengenkripsian Caesar Cipher ditingkatkan menggunakan penggabungan dengan metode Row Transposition Cipher, sehingga hasil enkripsinya memiliki keamanan yang baik. Selanjutnya, teknik enkripsi tersebut diterapkan pada program aplikasi pengirim email untuk melihat bagaimana proses enkripsinya bekerja. Program aplikasi tersebut dibuat menggunakan software Delphi 7.,---Cryptography is the art of writing or solving codes (Concise Oxford Dictionary, 2006). Cryptography is divided into two, namely classical cryptography and modern cryptography. Encryption Caesar Cipher is a classic cryptographic Encryption Technique that does not have good security in its Encryption because the Encryption key can be search easily using Known Plaintext Attack or Letter Frequency method. One way to improve the security of encrypting Caesar Cipher is merging with other Encryption methods that have good security. Classical cryptographic Encryption Techniques can be categorized as a good security Encryption when the Encryption key searches can not be performed by the Known Plaintext Attack or Letter Frequency method, so the Encryption key can only be found by Brute Force Search method. A good classical cryptographic Encryption Technique, one of which is the Row Transposition Cipher, so it can be used to improve the security of Caesar Cipher Encryption. In this study, the security level of Caesar Cipher improved using merging with Row Transposition Cipher method, so that the Encryption results have good security. Furthermore, the Encryption Technique applied to the email sender application program to see how the Encryption process works. The application program is created using Delphi 7 softwar
Akmil Ibnu Sobari - One of the best experts on this subject based on the ideXlab platform.
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aplikasi pengirim email dengan penerapan enkripsi caesar cipher yang telah ditingkatkan keamanannya menggunakan enkripsi row transposition cipher
2017Co-Authors: Akmil Ibnu SobariAbstract:Kriptografi adalah seni menulis dan memecahkan suatu kode (Concise Oxford Dictionary, 2006). Kriptografi terbagi menjadi dua, yaitu kriptografi klasik dan kriptografi modern. Enkripsi Caesar Cipher merupakan teknik enkripsi kriptografi klasik yang tidak memiliki keamanan yang baik dalam pengenkripsiannya sebab pencarian kunci enkripsi dapat dilakukan dengan mudah menggunakan teknik Known Plaintext Attack ataupun Letter Frequency. Salah satu cara untuk meningkatkan keamanan pengenkripsian Caesar Cipher adalah menggunakan penggabungan dengan metode enkripsi lain yang memiliki keamanan yang baik. Teknik enkripsi kriptografi klasik dapat dikategorikan baik apabila pencarian kunci enkripsi tidak dapat dilakukan dengan metode Known Plaintext Attack ataupun Letter Frequency, sehingga pencarian kunci hanya dapat dilakukan dengan metode Brute Force Search. Teknik enkripsi kriptografi klasik yang baik salah satunya adalah Row Transposition Cipher, sehingga dapat digunakan untuk meningkatkan keamanan pengenkripsian Caesar Cipher. Pada penelitian ini, keamanan pengenkripsian Caesar Cipher ditingkatkan menggunakan penggabungan dengan metode Row Transposition Cipher, sehingga hasil enkripsinya memiliki keamanan yang baik. Selanjutnya, teknik enkripsi tersebut diterapkan pada program aplikasi pengirim email untuk melihat bagaimana proses enkripsinya bekerja. Program aplikasi tersebut dibuat menggunakan software Delphi 7.,---Cryptography is the art of writing or solving codes (Concise Oxford Dictionary, 2006). Cryptography is divided into two, namely classical cryptography and modern cryptography. Encryption Caesar Cipher is a classic cryptographic Encryption Technique that does not have good security in its Encryption because the Encryption key can be search easily using Known Plaintext Attack or Letter Frequency method. One way to improve the security of encrypting Caesar Cipher is merging with other Encryption methods that have good security. Classical cryptographic Encryption Techniques can be categorized as a good security Encryption when the Encryption key searches can not be performed by the Known Plaintext Attack or Letter Frequency method, so the Encryption key can only be found by Brute Force Search method. A good classical cryptographic Encryption Technique, one of which is the Row Transposition Cipher, so it can be used to improve the security of Caesar Cipher Encryption. In this study, the security level of Caesar Cipher improved using merging with Row Transposition Cipher method, so that the Encryption results have good security. Furthermore, the Encryption Technique applied to the email sender application program to see how the Encryption process works. The application program is created using Delphi 7 software
Quistaphetsi Kester - One of the best experts on this subject based on the ideXlab platform.
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a cryptographic and watermarking Encryption Technique for securing and authentication of digital images
International Journal of Computer Applications, 2015Co-Authors: Quistaphetsi Kester, Sophie Gire, Laurent Nana, Anca Christine Pascu, Jojo M Eghan, Nii Narku QuaynorAbstract:Identity management is crucial in cyberspace where infringement of one’s privacy, copy right disputes, theft and other malicious activities are very rampant. There exists a need of ownership identification and authentication of digital images. In solving and contributing to this field, we proposed a cryptographic and watermarking Encryption Technique for securing and authentication of digital images for identity management. In our approach, we encrypt the data to be embedded into the image before embedding it to the image. We make sure we select a random position in the image based on an embedding key. We make sure the message to be embedded was converted into values that falls in between 0255. This is to avoid it being detected using forensic or steganalytic software. General Terms Security, Cryptography, watermarking, image processing
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a visual cryptographic Encryption Technique for securing medical images
arXiv: Cryptography and Security, 2013Co-Authors: Quistaphetsi KesterAbstract:The increased growth in the use of transmission of multimedia medical contents over unsecured and open networks provides insecurity for confidential patient information over these networks. Digital Encryption of medical images before transmission and storage is proposed as a way to effectively provide protection of patient information. Encryption before watermarking of these images is necessary in order to ensure inaccessibility of information to unauthorized personnel with patient. This paper presented a visual cryptographic Technique for encrypting of medical images before transmission or storage of them. This will make such images inaccessible by unauthorized personnel and also ensures confidentiality. The process made use of an Encryption Technique that is based on pixel shuffling and a secret key generated from the image.
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a cryptographic image Encryption Technique for facial blurring of images
arXiv: Cryptography and Security, 2013Co-Authors: Quistaphetsi KesterAbstract:Protection of faces in pictures and videos of people in connection with sensitive information, activism, abused cases and others on public broadcasting media and social networks is very important. On social networks like YouTube, Facebook, Twitter and others, videos are being posted with blurring Techniques of which some of them cannot be recoverable. Most blurring Techniques used can easily be recoverable using off-the-shelf software. The ones that are difficult to be recovered also can easily be used by abusers and other wrong doers. This paper proposes an image Encryption Technique that will make it possible for selected facial area to be encrypted based on RGB pixel shuffling of an m*n size image. This will make it difficult for off-the-shelf software to restore the encrypted image and also make it easy for the law enforcement agencies to reconstruct the face back in case the picture or video is related to an abuse case. The implementation of the Encryption method will be done using MATLAB. At the end, there will be no change in the total size of the image during Encryption and decryption process.
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A novel cryptographic Encryption Technique of video images using quantum cryptography for satellite communications
2013 International Conference on Adaptive Science and Technology, 2013Co-Authors: Quistaphetsi Kester, Laurent Nana, Anca Christine PascuAbstract:In today's world where drones play a major role in military warfare and domestic surveillance activities, there is a need for transmission of secured video images without any intrusion by a third party. Any intrusion by an adversary should easily be detected in real-time and the compromised information should be virtually impossible to decipher. This paper proposed a new method of Encryption of video images using quantum key distribution and visual cryptographic Technique. The key agreement process was done using quantum key distribution and the generated key was be used by the proposed Encryption algorithm.
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a cryptographic image Encryption Technique based on the rgb pixel shuffling
2013Co-Authors: Quistaphetsi KesterAbstract:Confidentiality is one of the ultimate goals in information security. Through Encryption one can prevent a third party from understanding raw data during signal transmission. The Encryption methods for enhancing the security of digital contents has gained high significance in the current era of breach of security and misuse of the confidential information intercepted and misused by the unauthorized parties. Rigorous use of advanced mathematical algorithms has played a major role in the success of modern day cryptography. This paper sets out to contribute to the general body of knowledge in the area of cryptography application and by developing a new cipher algorithm for image Encryption of m*n size by shuffling the RGB pixel values. The algorithm ultimately makes it possible for Encryption and decryption of the images based on the RGB pixel. The algorithm was implemented using MATLAB.
Nestor Bolognini - One of the best experts on this subject based on the ideXlab platform.
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double random phase encoding method using a key code generated by affine transformation
Optik, 2011Co-Authors: Fabian Mosso, Myrian Tebaldi, Roberto Torroba, Nestor BologniniAbstract:Abstract We present a 4f optical security scheme by using a key code mask generated by an affine transformation operation. The key encrypting code produced through a pseudo-random pattern generated from a source image depends on the affine transformation parameters and the iteration number that control its random properties. This procedure offers the advantage over the conventional double random phase mask Encryption Technique that we do not need to send the encrypting mask itself to the authorizer user, but the set of elements that leads to the construction of the key code mask.
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multiplexing Encryption Technique by combining random amplitude and phase masks
Optik, 2009Co-Authors: John Fredy Barrera, Roberto Torroba, Myrian Tebaldi, Nestor BologniniAbstract:We propose and demonstrate an Encryption-selectable undercover multiplexing. We encrypt and multiplex images for storage by means of a random phase mask common to every image, covered with random amplitude masks different for each image. In order to get a correct decryption of the encoded information, we have to use the appropriate random amplitude mask; otherwise fake information is recovered. We employ a phase conjugation scheme to generate the recovering wavefronts. We analyze and compare the different alternatives and degrees of complexity this combination of masks brings to enhance the security of optical encrypting Techniques. We also include an analysis on the advantages and disadvantages this undercover multiplexing protocol offers. We present digital simulations to demonstrate the soundness of the proposal.
Mohammed Ali Hussain - One of the best experts on this subject based on the ideXlab platform.
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a novel image Encryption Technique using rgb pixel displacement for color images
International Conference on Advanced Computing, 2016Co-Authors: Shrija Somaraj, Mohammed Ali HussainAbstract:In the present scenario when all data is in network, cloud or some data center, security and protection of data is a major concern. Encryption is one of the Techniques used for this purpose. Image Encryption is applied for protecting images from different kinds of attacks. Image Encryption is possible by a kind of transposition in color images or 3D images by displacing the rgb components of the color image. This paper presents a method for Encryption and decryption of Color images using RGB pixel displacement. In the proposed method the original plain image is split into its basic three components, that is the RGB components and the key image is also split into RGB Components. Further by application of XOR operation and scrambling of the three components the cipher image is generated. This method is suitable for encrypting 3D images. The algorithm is implemented in MATLAB environment and tested on various color images.