Steganografi Penyisipan Pesan Pada File Citra Dengan Menggunakan Metode LSB (Least Significant Bit)

2021 ◽  
Vol 4 (1) ◽  
pp. 1-6
Author(s):  
Buha Johannes Simbolon

The rapid development of technology not only has a positive impact, but can also have a negative impact on the users of this technology. One of them is the development of cyber crime which causes messages to be unsafe to protect. Message security can be protected by using steganography to convert messages into secret passwords. To make the secret password more secure, steganography techniques are used. Steganography is a technique for hiding messages by inserting messages into other containers. In this study, a combination of two algorithms is used, namely the RC4 and Base Cryptography algorithm, which is better known as the Super Encryption algorithm and the steganography technique using the Least Significant Bit (LSB) method with random pixel insertion using a pseudorandom number generator (PRNG). Algorithm use. the scope of the problem is the information insertion media used, the process of making data into information and sending to message recipients, the method used in writing the thesis using LSB (Least Significant Bit) and the programming language used in building this system is PHP (Hypertext Preprocessor) with MySQL database (My Structured Query Language) on PhpMyAdmin.

2019 ◽  
Vol 4 (1) ◽  
pp. 28-38
Author(s):  
Lekso Budi Handoko ◽  
Chaerul Umam ◽  
Adelia Syifa Anindita

The rapid development of technology not only has a positive impact, but also can have a negative impact such as the development of cyber crime that can cause messages to be unsafe. Message security can be protected using cryptography to convert messages into secret passwords. Steganography is a technique of hiding messages by inserting messages into images that are used to increase message security. In this study, it discusses a combination of hill cipher and LSB algorithms to secure messages. The message used is a 3-bit grayscale image for steganography and text messages with 32, 64 and 128 characters for cryptography. The measuring instruments used in this study are MSE, PSNR, Entropy and travel time (CPU time). Test results prove an increase in security without too damaging the image. This is evidenced by the results of the MSE trial which has a value far below the value 1, the PSNR is> 65 dB with a range of entropy values of 5 to 7, and travel times are almost the same.


Pringgitan ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 25-39
Author(s):  
Andreas Yogi Prasetyo

Endowed with stunning natural beauty, Sleman has become a destination increasingly flooded by tourists from year to year. The rapid development of tourism does have a positive impact, especially on the economic side, but on the other hand, it can have a negative impact if the management does not prioritize the principles of sustainable tourism. The type of tourism that can be affected is tourism that relies on nature as its main attraction, Cliff of Breksi is one of them. Cliff of Breksi has experienced rapid development in terms of the number of tourist visits, but it has never been examined whether its management is following the principle of sustainability. The objectives of this research are: a) to identify the management of the environmental aspects of Cliff of Breksi, whether it is following the indicators of sustainable tourism from The World Tourism Organization (UNWTO) and b) determine what things need to be improved so that management can be more optimal. The research method used is a descriptive qualitative method. Research data were collected through in-depth interviews and observations. The results of the study indicate that the manager has so far had awareness and understanding in applying the principles of sustainable tourism as in the indicators of UNWTO sustainable tourism. Keywords: evaluation of nature tourism, indicator, sustainable tourism


2019 ◽  
Author(s):  
Chintami Budi Pertiwi

Bahasa Indonesia dalam berbagai keperluan merupakan bahasa resmi negara Indonesia dan telah digunakan sebagai alat komunikasi lisan maupun tulis, baik formal maupun informal. Selain fungsi komunikasi, bahasa Indonesia juga berfungsi sebagai alat pemersatu bangsa Indonesia. Dewasa ini bahasa Indonesia dihadapkan pada perkembangan dunia yang begitu pesat, termasuk perkembangan teknologi informasi dan kebudayaan yang begitu mengkhawatirkan. Dengan pesatnya perkembangan teknologi informasi dan kebudayaan tersebut menuntut bangsa Indonesia untuk bekerja keras, dan secara aktif mempersiapkan diri mengejar ketinggalan yang ada dari berbagai aspek kehidupan, dan termasuk mengantisipasi perkembangan informasi dan budaya yang mengglobal. Salah satu dampak dari globalisasi ini adalah penggunaan Bahasa Inggris yang dianggap lebih berkelas dan memiliki nilai kebanggaan tersendiri oleh kaum milenial. Salah satu dampak positifnya yaitu akan memudahkan bagi para milenial untuk berkomunikasi secara internasional. Di sisi lain, dampak negative daripadanya yaitu loyalitas pembelajar terhadap bahasa Indonesia menjadi berkukurang, bahkan akan menjadi luntur. Bagaimana kiat bangsa Indonesia untuk mengejar ketinggalan dari bangsa lain dan bagaimana kiatnya agar bangsa Indonesia tetap mencintai bangsanya dan termasuk bahasanya, tentunya harus adanya kerja keras dan kepedulian dari seluruh komponen bangsa Indonesia.Abstract: Indonesian language in many purposes as the official language of Indonesian has been used as an oral and written communicate, both formal and informal. Besides being a communication tool, Indonesian language also serves as a unifying tool for Indonesian. In this era, Indonesian language is faced with a very rapid development of the world, including the development of information technology and culture that are so worrying. With the rapid development of information technology and culture, it demands the Indonesian people to work hard and actively prepare to catch up with the existing aspects of life, including anticipating information development and a globalized culture. One of the positive impact is easier for international communication. Meanwhile, the negative impact is predicted to be the learner's loyalty towards Indonesian language to be reduced and will even fade. How do Indonesian people try to catch up with other nations and how do they try to keep the Indonesian people in love with their nation and including their language, of course, there must be hard work and care for all components of the Indonesian nation.


2021 ◽  
Vol 9 (1) ◽  
pp. 51-66
Author(s):  
Kristi Joamets ◽  
◽  
Archil Chochia ◽  

Digitalisation and emerging technologies affect our lives and are increasingly present in a growing number of fields. Ethical implications of the digitalisation process have therefore long been discussed by the scholars. The rapid development of artificial intelligence (AI) has taken the legal and ethical discussion to another level. There is no doubt that AI can have a positive impact on the society. The focus here, however, is on its more negative impact. This article will specifically consider how the law and ethics in their interaction can be applied in a situation where a disabled person needs some kind of assistive technology to participate in the society as an equal member. This article intends to investigate whether the EU Guidelines for Trustworthy AI, as a milestone of ethics concerning technology, has the power to change the current practice of how social and economic rights are applied. The main focus of the article is the ethical requirements ‘Human agency and oversight’ and, more specifically, fundamental rights.


2020 ◽  
Vol 23 (02) ◽  
pp. 119-127
Author(s):  
Christian Tarapul Anjur Hasiholan ◽  
Anton Hendrik Samudra

The present development of technology, mainly with the presence of internet has presented new ways and opportunities in business, namely by electronic commerce (e-commerce). Despite having positive impact, e-commerce also has the potential to cause a negative impact, that is by cyber crime. This research is intended to analyse the possibility of a new cyber crime mode which utilizes cashback promotion in e-marketplace (mainly known as marketplace). The mode used by the perpetrators is to make fictitious transaction in order for the system of marketplace to provide many cashback promos for each transaction made. The perpetrators are allowed to do this mode because they take advantage of the flaw in the system of the marketplace due to the availability of the cashback promo for all of the consumer. The emergence of the possibility of a new cyber crime mode shows the importance of this case to be assessed based on The Law of Republic Indonesia Number 19 of 2016 Concerning Amandment to The Law of Republic Indonesia Number 11 Number 11 of 2008 concerning Electronic Information and Transactions when a transaction is considered as manipulative.


Perspektif ◽  
2022 ◽  
Vol 1 (3) ◽  
pp. 305-320
Author(s):  
Suwandi Suryasaputra

Abstrak Kopi menjadi salah satu komoditas yang pada masa pandemi ini justru mengalami peningkatan pesat, baik dari sisi bisnis usaha, maupun dari sisi jumlah kedai kopi yang bertema kekinian dibanding komoditas usaha lainnya. Salah satu kota di Indonesia yang mengalami perkembangan yang sangat pesat berkaitan dengan bisnis kedai kopi adalah Kota Tarakan, Kalimantan Utara. Meskipun dibanding kota lain di Kalimantan, barangkali perkembangan kedai kopi di kota Tarakan sedikit tertinggal 3-4 tahun misalnya dari kota Balikpapan dan Banjarmasin. Jumlah kedai kopi di Kota Tarakan mengalami peningkatan cukup pesat dalam kurun waktu dari tahun 2019 hingga 2021 ini. Lokasi kedai kopi di Kota Tarakan tersebar di sekitar kawasan perdagangan, perkantoran dan permukiman penduduk. Kehadiran kedai kopi di beberapa kawasan disatu sisi berdampak positif, yaitu menghidupkan kawasan di sekitar kedai yang semula sepi dan rawan, menjadi ramai, namun disisi lain juga kadang kala berdampak negatif, seperti terjadi kemacetan lalulintas, kesulitan lahan parkir dan kebisingan suara dari aktivitas kedai kopi. Oleh karena itu pemilihan lokasi kedai kopi menjadi tantangan tersendiri. Penelitian ini bertujuan untuk menentukan pengaruh dari beberapa faktor utama yang mendasari pemilik kedai kopi memilih lokasi untuk pendirian kedai kopinya di Kota Tarakan. Menjamurnya kedai kopi kekinian dari sisi perkembangan perekonomian kota sangat baik, karena memicu denyut perekonomian kota, membantu mengakselerasi pemulihan ekonomi dimasa pandemi serta menjadi salah satu masukan menarik dalam pembangunan tata kota dan pengembangan pusat-pusat ekonomi baru di Kota Tarakan terutama yang berkaitan dengan aktivitas perdagangan dan jasa. Penelitian ini masih merupakan ide gagasan/pemikiran penulis yang melihat bahwa perkembangan kedai kopi dari hari ke hari sebagai suatu fenomena unik sebuah kota. Dan itu terjadi di hampir seluruh kota besar di Indonesia. Data yang digunakan merupakan informasi yang diperoleh dari komunitas kopi yang terdiri dari para pemilik kedai kopi dan barista di Kota Tarakan. Berdasarkan hasil pengamatan diperoleh empat kelompok faktor yang menggambarkan karakter pemilihan lokasi kedai kopi di Kota Tarakan. Kelompok faktor yang mempengaruhi pemilihan lokasi kedai kopi di Kota Tarakan yaitu fleksibilitas/aksesibilitas lokasi, kesesuaian/ketepatan lokasi, dukungan/support di sekitar lokasi, dan faktor-faktor tambahan lainnya. Fleksibilitas lokasi yaitu jangkauan kemudahan akses ke lokasi kedai dan bagaimana pelanggan/customer bisa dengan mudah mencapainya. Kesesuaian lokasi yaitu ketepatan pemilihan lokasi kedai dengan pertimbangan tertentu agar dapat mengakomodir kebutuhan dari kegiatan kedai kopi tersebut. Dukungan di sekitar lokasi yaitu adanya elemen-elemen pendukung yang ada di sekitar lokasi yang bisa menunjang dan mempermudah dalam kegiatan operasional kedai kopi. Faktor tambahan lainnya adalah faktor lain yang menjadi pertimbangan pemilihan lokasi namun relatif tidak memberikan pengaruh yang besar dalam penentuan pemilihan lokasi kedai kopi di Kota Tarakan, antara lain faktor efisiensi biaya kontrak. Abstract Coffee is one of the commodities that experienced a rapid increase during this pandemic, both in terms of the business and the number of coffee shops with contemporary themes compared to other business commodities. One of Indonesia's cities experiencing rapid development to the coffee shop business is Tarakan City, North Kalimantan. Although compared to other cities in Kalimantan, perhaps the result of coffee shops in Tarakan is a little behind 3-4 years, for example, from Balikpapan and Banjarmasin's towns. Tarakan City's coffee shops have increased quite rapidly from 2019 to 2021. The location of coffee shops in Tarakan City is spread around the trading area, offices, and residential areas.   The presence of coffee shops in several places, on the one hand, has a positive impact, namely reviving the area around the shop, which was initially quiet and vulnerable, becoming crowded. Still, on the other hand, it also sometimes has a negative impact, such as traffic jams, parking difficulties, and noise from coffee shop activities. Therefore, choosing a coffee shop location is a challenge in itself. This study aims to determine the influence of several primary factors that underlie coffee shop owners selecting a place to establish their coffee shop in Tarakan City. The proliferation of trendy coffee shops in the city's economic development helped accelerate economic recovery during the pandemic and develop new financial centres in Tarakan City, especially trading activities. And services. This research is still the author's ideas/thoughts who see that the development of coffee shops from day to day is a unique phenomenon of a city.   Furthermore, it happened in almost all big cities in Indonesia. The data used is information obtained from the coffee community consisting of coffee shop owners and baristas in Tarakan City. Based on the observations, four factors describe the character of choosing a coffee shop location in Tarakan City. The factors that influence the selection of coffee shop locations in Tarakan City are location flexibility/accessibility, suitability/accuracy, support/support around the area, and other additional factors. Location flexibility is the range of easy access to the shop's location and how customers/customers can easily reach it. Location suitability is the accuracy of choosing the shop's location with specific considerations to accommodate the needs of the coffee shop's activities. Another factor is other factors considered for site selection but relatively do not significantly influence the location of coffee shops in Tarakan City, including contract cost efficiency.


2021 ◽  
Vol 2 (2) ◽  
pp. 41-48
Author(s):  
Muhammad Wildan Arsyad Muzaki ◽  
Ale Alfero Deputra ◽  
Intan Nurkumalawati

The rapid development of tourism in Pacitan Regency, in addition to having a positive impact, has also caused various problems, including environmental degradation and environmental pollution due to plastic waste. Watu Karung and Pancer Door beaches are also affected by the beach. One of the main factors that can support the cleanliness of the coast is the existence of pro-active actions from the surrounding community and beach visitors. Therefore, through the 2020 Latjapura activity, the Immigration Polytechnic Cadets carry out community service activities by mutual cooperation around the coast to provide benefits to the community and the surrounding ecosystem and increase awareness of the cleanliness of the surrounding community in order to create a good ecosystem and ecotourism-based beaches. This activity is also expected to provide awareness of the cleanliness of the coastal environment for the surrounding community and provide an understanding to the public that the waste produced has a negative impact on the development of marine biota and ecosystems.


2021 ◽  
Vol 12 (1) ◽  
pp. 90
Author(s):  
Putu Emy Suryanti

<em>Nowadays, science and technology have developed very rapidly. The development of science and technology has brought many conveniences for humans, so that it can help overcome various problems in life. However, on the other hand, there is a great deal of concern over the increasingly rapid development of science and technology because no person or institution has the authority to prevent the negative impact of the development of science and technology. Meanwhile, science and technology are increasingly losing their fundamental spirit, which makes human beings increasingly enslaved by science and technology. This causes advances in science and technology to be supported by philosophical studies. Likewise with health science, philosophical studies both in the ontology, epistemology and axiology are needed. One of the fundamental things in health is the concept of health-sickness. The study of the concept of health-sickness from a philosophical perspective is expected to have a positive impact along with the development of health science so that it can increase individual and community understanding of holistic health with the long-term hope of being able to improve public health status and support the Government in health development programs.</em>


Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Xi Chen ◽  
Shuai Qian ◽  
Fei Yu ◽  
Zinan Zhang ◽  
Hui Shen ◽  
...  

In this paper, we propose a method to design the pseudorandom number generator (PRNG) using three kinds of four-wing memristive hyperchaotic systems (FWMHSs) with different dimensions as multientropy sources. The principle of this method is to obtain pseudorandom numbers with good randomness by coupling XOR operation on the three kinds of FWMHSs with different dimensions. In order to prove its potential application in secure communication, the security of PRNG based on this scheme is analyzed from the perspective of cryptography. In addition, PRNG has passed the NIST 800.22 and ENT test, which shows that PRNG has good statistical characteristics. Finally, an image encryption algorithm based on PRNG is adopted. In the encryption algorithm, the optimized Arnold matrix scrambling method and the diffusion processing based on XOR are used to obtain the final encrypted image. Through the evaluation of encryption performance, it is concluded that there is no direct relationship between the pristine image and encrypted image. The results show that the proposed image encryption scheme has good statistical output characteristics and security performance in line with cryptography.


GANEC SWARA ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 78
Author(s):  
ARYA UTAMA ◽  
TITIN TITAWATI ◽  
ALINE FEBRYANI LOILEWEN

The rapid development of information technology has a positive and negative impact on the enforcement of Copyright law. The positive impact is in line with technological advances, especially the internet, so it's easy to buy original songs or music through online shopping facilities. While the negative impact is the increasing number of links downloading songs or illegal music in cyberspace, as well as the easier the piracy of voice recording works in the real world.     The research method used in this study is a library research method that is normative juridical, namely research that refers to legal norms that exist in legislation, literature, expert opinions, papers, etc. In this case the copyright registration of the song and music is not an evidence if there is a copyright dispute over the song and music on the internet media, if there is prior publication carried out by one of the parties to the dispute then someone who can prove the authenticity of his creation will be the copyright holder of the disputed song or music. In Article 35 paragraph (4) the Copyright Act explains that the provisions on registration of work are not an obligation to obtain a Copyright, because Copyright protection arises automatically, (Automatic Protection) since the creation is manifested in a tangible form, without having to go through registration procedure


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