Penerapan Algoritma Least Significant Bit Untuk Menyembunyikan Vigenere Cipher Text pada Citra Digital

Abstrak— Pengamanan data menggunakan metode kriptografi bersifat mengacak pesan sehingga tidak mudah dimengerti, namun masih menimbulkan kecurigaan sedangkan Steganografi merupakan seni menyembunyikan informasi sehingga tidak terlihat dengan tanpa mengacak informasi tersebut. Penelitian ini bertujuan menyisipkan pesan yang dienkripsi dengan vigenere cipher dengan metode penyisipan 2 bit LSB (Least Significant Bit) pada cover gambar RGB. Hasil pengujian PSNR pada media cover gambar dengan 3 jenis yaitu: gambar background, gambar alam dan gambar rongsen dengan penyisipan data teks berukuran 10kb, 50kb, 100kb, 340kb menunjukkan bahwa PSNR pada gambar background rata-rata 51,8 persen, gambar alam rata-rata 50,6 persen, dan pada gambar rongsen rata-rata 50,7 persen, sehingga dapat disimpulkan bahwa metode 2 LSB (Least Significant Bit) yang digunakan dalam penelitian ini termasuk dalam kategori bagus atu baik karena nilai PSNR > 40 persen. Kata Kunci— Kriptografi, Steganografi, Vigenere Cipher, Least 2 LSB, RGB, PSNR

Potensi Wisata Jogja Planning Gallery

Jogja Planning Gallery merupakan salah satu destinasi wisata baru yang akan dibangun tahun 2024. Wisata ini menawarkan gambaran Yogyakarta dari masa lalu, masa kini, hingga prediksi masa depan, terutama sejarah dan filosofi Yogyakarta dan bangunan Jogja Planning Gallery tersebut. Destinasi yang masih dalam pengerjaan ini belum memberikan hasil bagaimana ketertarikan dan minat wisatawan terhadap Jogja Planning Gallery. Oleh karena itu penelitian ini bertujuan untuk menganalisis potensi wisata Jogja Planning Gallery. Penelitian dilakukan dengan metode deskriptiif kualitatif dengan pengumpulan data melalui studi literatur. Hasil penelitian menunjukkan bahwa konsep bangunan dan atraksi di Jogja Planning Gallery menjadi wisata potensial karena belum pernah ada sebelumnya terutama di Yogyakarta. Bangunan Jogja Planning Gallery memiliki filosofi dan maknanya sendiri, sedangkan isi dari bangunan tersebut menawarkan sejarah dan perencanaan pengembangan Yogyakarta dari masa lalu hingga masa depan sehingga tampilannya akan menggunakan teknologi tinggi. Bangunan ini juga menyediakan ruangan-ruangan untuk pameran dan panggung untuk pentas seni dan budaya. Secara keseluruhan, keberadaan Jogja Planning Gallery juga memenuhi 4A yaitu attraction, accessibility, amenity, dan ancillary yaitu destinasi wisata yang unik dan menarik, kemudahan akses karena terletak di Malioboro sebagai ikon Yogyakarta, dukungan fasilitas yang diperlukan wisatawan seperti hotel dan tempat makan, serta berbagai fasilitas pendukung yang dapat dimanfaatkan wisatawan

Digital Twin and Blockchain Extension in Smart Buildings Platform as Cyber-Physical Systems

Cyber-physical systems is integrated computation with the physical world. CPS increasing in a wide range of applications, from smart homes to smart buildings. Digital twins are promising way to solve challenges with combination of CPS, 3D technology, and IoT. The system provides users with immersive interfaces to control and interact with devices within the smart building environment. Blockchain was chosen to secure user data using cryptographic algorithms and ensure data protection against manipulation, spying, and theft. Average load testing data for digital twin platform implemented in smart buildings range from 1 to 11 floors. The results reveal a gradual increase in average test times as the buildings' size and complexity grow, with the following values: 5.663s for 1 floor until 11 floors 7.294s. The data obtained from of the blockchain test using Hyperledger Besu provide essential insights into the system's performance with several bandwidth that used in the system. Average time for each test trial ranged from 1.066 seconds to 2.006 seconds, showing slight variations based on the bandwidth used. However, transactions per second (TPS) values were relatively fast, ranging from 1.066 tps to 0.499 tps with positive aspect of the retention rate for all trials was 100% success

Network Forensics Against Address Resolution Protocol Spoofing Attacks Using Trigger, Acquire, Analysis, Report, Action Method

This study aims to obtain attack evidence and reconstruct commonly used address resolution protocol attacks as a first step to launch a moderately malicious attack. MiTM and DoS are the initiations of ARP spoofing attacks that are used as a follow-up attack from ARP spoofing. The impact is quite severe, ranging from data theft and denial of service to crippling network infrastructure systems. In this study, data collection was conducted by launching an test attack against a real network infrastructure involving 27 computers, one router, and four switches. This study uses a Mikrotik router by building a firewall to generate log files and uses the Tazmen Sniffer Protocol, which is sent to a syslog-ng computer in a different virtual domain in a local area network. The Trigger, Acquire, Analysis, Report, Action method is used in network forensic investigations by utilising Wireshark and network miners to analyze network traffic during attacks. The results of this network forensics obtain evidence that there have been eight attacks with detailed information on when there was an attack on the media access control address and internet protocol address, both from the attacker and the victim. However, attacks carried out with the KickThemOut tool can provide further information about the attacker’s details through a number of settings, in particular using the Gratuitous ARP and ICMP protocols

Efektifitas Pemberian Pupuk Hayati terhadap Pertumbuhan dan Hasil Padi Gogo pada Tanah Kering

On-farm experimental were conducted in dry land of Banyusri villages, Wonosegoro sub district, Boyolali district in 2013/2014 WS. Randomizied block designed was used with four replications. Eight treatments consisted of fertilizers based on Dry soil test kit as control (P1), 50% NPK fertilizers recommended + Probio (P2), 50% NPK fertilizers recommended + Remicer (P3), 50% NPK fertilizers recommended + Starmik + 2 t FYM/ha (P4), 50% NPK fertilizers recommended + Agrimeth (P5), 50% NPK fertilizers recommended + Biovam plus (P6), 50% NPK fertilizers recommended + Glyocompoct (P7), 50% NPK fertilizers recommended (P8), 50% NPK fertilizers recommended + 2 t FYM/ha (P9). Parameters were observed i.e. plant growth (plant height and tiller numbers per hills), rice yield (converse plot sized 2.5 m x 2.5 m in hectares at 14 % water contents) and farmer respons on biofertilizers used were evaluated. Research resulted showed thats (a) the applicaton of biofertilizers such as Probio, Glyocompost and Starmix were combined to 50% NPK fertilizers recommended gave the rice yield same with combined to NPK fertilizers recommended, its means that USAge recommendation of 50% NPK fertilizers combined to third biofertizers able to 50% NPK fertilizers efficient. (b). The farmer respons to USAge of biofertilizers applied showed that (b1) 83.3% cooperator farmers positive respons in application of biofertilizer. (b2) 61.20 % farmers most easierly on biofertilizers applied. (b3) 94,4% farmers has benefit from biofertilizers applied. (b4) 83,3 % cooperators farmer able to buy biofertilizers in the markets. (b4) Cooperator farmers to select in liquid forms of biofertiliers with Rp 10.000 per sacheet prices. But if solid type of biofertilizers with prices Rp 1.000,- per kg. Keywords : efectivness, biofertilizer, gogo ric

EFEKTIFITAS PEMBERIAN PUPUK HAYATI TERHADAP PERTUMBUHAN DAN HASIL PADI GOGO PADA TANAH KERING

On-farm experimental were conducted in dry land of Banyusri villages, Wonosegoro sub district, Boyolali district in 2013/2014 WS. Randomizied block designed was used with four replications. Eight treatments consisted of fertilizers based on Dry soil test kit as control (P1), 50% NPK fertilizers recommended + Probio (P2), 50% NPK fertilizers recommended + Remicer (P3), 50% NPK fertilizers recommended + Starmik + 2 t FYM/ha (P4), 50% NPK fertilizers recommended + Agrimeth (P5), 50% NPK fertilizers recommended + Biovam plus (P6), 50% NPK fertilizers recommended + Glyocompoct (P7), 50% NPK fertilizers recommended (P8), 50% NPK fertilizers recommended + 2 t FYM/ha (P9). Parameters were observed i.e. plant growth (plant height and tiller numbers per hills), rice yield (converse plot sized 2.5 m x 2.5 m in hectares at 14 % water contents) and farmer respons on biofertilizers used were evaluated. Research resulted showed thats (a) the applicaton of biofertilizers such as Probio, Glyocompost and Starmix were combined to 50% NPK fertilizers recommended gave the rice yield same with combined to NPK fertilizers recommended, its means that usage recommendation of 50% NPK fertilizers combined to third biofertizers able to 50% NPK fertilizers efficient. (b). The farmer respons to usage of biofertilizers applied showed that (b1) 83.3% cooperator farmers positive respons in application of biofertilizer. (b2) 61.20 % farmers most easierly on biofertilizers applied. (b3) 94,4% farmers has benefit from biofertilizers applied. (b4) 83,3 % cooperators farmer able to buy biofertilizers in the markets. (b4) Cooperator farmers to select in liquid forms of biofertiliers with Rp 10.000 per sacheet prices. But if solid type of biofertilizers with prices Rp 1.000,- per kg. Keywords : efectivness, biofertilizer, gogo ric

Penerapan Algoritma Least Significant Bit Untuk Menyembunyikan Vigenere Cipher Text pada Citra Digital

Abstrak— Pengamanan data menggunakan metode kriptografi bersifat mengacak pesan sehingga tidak mudah dimengerti, namun masih menimbulkan kecurigaan sedangkan Steganografi merupakan seni menyembunyikan informasi sehingga tidak terlihat dengan tanpa mengacak informasi tersebut. Penelitian ini bertujuan menyisipkan pesan yang dienkripsi dengan vigenere cipher dengan metode penyisipan 2 bit LSB (Least Significant Bit) pada cover gambar RGB. Hasil pengujian PSNR pada media cover gambar dengan 3 jenis yaitu: gambar background, gambar alam dan gambar rongsen dengan penyisipan data teks berukuran 10kb, 50kb, 100kb, 340kb menunjukkan bahwa PSNR pada gambar background rata-rata 51,8 persen, gambar alam rata-rata 50,6 persen, dan pada gambar rongsen rata-rata 50,7 persen, sehingga dapat disimpulkan bahwa metode 2 LSB (Least Significant Bit) yang digunakan dalam penelitian ini termasuk dalam kategori bagus atu baik karena nilai PSNR > 40 persen. Kata Kunci— Kriptografi, Steganografi, Vigenere Cipher, Least 2 LSB, RGB, PSNR

PENERAPAN KODE ETIK PARIWISATA PADA DESA WISATA DI YOGYAKARTA UNTUK MENCAPAI SUSTAINABLE DEVELOPMENT GOALS

Penelitian ini bertujuan menganalisis penerapan kode etik pariwisata desa wisata di Yogyakarta untuk mendukung pariwisata yang berkelanjutan dalam rangka memenuhi Sustainability Development Goals (SDGs). Metode penelitian menggunakan kualitatif dengan pengumpulan data melalui wawancara, dokumentasi, dan observasi yang dianalisis menggunakan teknik Miles dan Huberman meliputi reduksi data, penyajian, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa 5 desa wisata yaitu Sidorejo, desa wisata Iklim Karangtanjung, desa wisata Kampung Flory, desa wisata Kadisobo II Sleman, dan desa wisata Kalurahan Madani Tepus (Dewi Kampus) telah menerapkan 9 (sembilan) kode etik pariwisata dari 10 pasal yaitu kontribusi pariwisata terhadap saling pengertian dan rasa hormat diantara masyarakat, pariwisata sebagai wahana pemenuhan individu dan kolektif, faktor dalam pembangunan pariwisata berkelanjutan, pengguna warisan budaya umat manusia dan kontributor peningkatan dalam pariwisata, kegiatan pariwisata yang bermanfaat bagi negara dan komunitas tuan rumah, kewajiban pemangku kepentingan dalam pengembangan pariwisata, hak atas pariwisata, kebebasan pergerakan wisatawan, hak-hak pekerja dan pengusaha di industri pariwisata, sedangkan Implementasi prinsip-prinsip Kode Etik Global untuk Pariwisata belum sepenuhnya terealisasi. Hal yang belum dipenuhi adalah fasilitas penukaran uang karena jangkauan wisatawan masih lokal. Selain itu juga belum ada investor maupun pengusaha yang menanam modal di desa wisata sehingga pendanaan untuk pengembangan desa wisata masih mengandalkan pemasukan dari wisatawan dan pemerintah setempat

Strategi Bersaing Hotel Grand Rohan Jogja dalam Jasa Akomodasi Berbasis Syariah

The purpose of this study is to analyze the implementation of sharia and the competitive strategy carried out by Grand Rohan Jogja, as well as efforts to overcome the various obstacles it faces. The research method uses a qualitative method of interviews which are analyzed using Miles and Huberman. The results obtained show that Hotel Grand Rohan Jogja applies principles and orientations that refer to the company's vision and mission and obtained halal certification from MUI on April 26, 2018. The competitive strategy of Hotel Grand Rohan Jogja prioritizes human resources and management by always improving performance, attitude, as well as sharia. Operations tailored to event predictions and room requests. Financial management with annual and monthly planning is prepared once a year, while marketing uses offline and online channels. Hotel Grand Rohan Jogja employees maintain friendliness and courtesy, promote offers that are not made by competitors, such as the All You Can Eat promo menu and spacious rooms for meetings/events, offer a varied menu of choices (western, Indonesian, Chinese food), 5 daily prayer calls, and Tahajud & Sahur Call. Grand Hotel Jogja also follows the government's policy, namely CHSE certification as a guarantee of security and comfort for visits and implementing health protocols.Tujuan dari penelitian ini adalah untuk menganalisis penerapan syariah dan strategi bersaing yang dilakukan Grand Rohan Jogja, serta upaya mengatasi berbagai kendala yang dihadapinya. Metode penelitian menggunakan kualitatif melalui wawancara yang dianalisis menggunakan Miles dan Huberman. Hasil penelitian yang diperoleh menunjukkan bahwa Hotel Grand Rohan Jogja menerapkan asas dan orientasi yang mengacu pada visi dan misi perusahaan serta memperoleh sertifikasi halal dari MUI pada tanggal 26 April 2018. Strategi bersaing Hotel Grand Rohan Jogja mengedepankan SDM dan manajemen dengan selalu melakukan perbaikan kinerja, attitude, maupun syariahnya. Operasional disesuaikan prediksi event dan permintaan kamar. Manajemen keuangan dengan perencanaan tahunan dan bulanan disusun setahun sekali, sedangkan pemasaran menggunakan channel offline maupun online. Karyawan Hotel Grand Rohan Jogja mempertahankan keramahan dan kesopanan, mempromosikan penawaran yang tidak dilakukan pesaing, seperti menu promo All You Can Eat dan ruang luas untuk pertemuan/event, menawarkan menu pilihan variatif (Western, Indonesia, Chinese food), azan sholat 5 waktu, dan Tahajud & Sahur Call. Grand Hotel Jogja juga mengikuti kebijakan pemerintah yaitu sertifikasi CHSE sebagai jaminan keamanan dan kenyamanan kunjungan dan menerapkan protokol kesehatan