Judul: Implementasi Fungsi Hash MD6 untuk Integritas Ijazah Digital
Abstrak: Nowadays certificates are still printed on papers, which makes it possible to forge by irresponsible parties. Certificates which are still printed on paper may also suffer from loss of important information when the document is lostor damaged. These issues motivates the needs for digital certificates, other than the fact that there are easier to store. However digital certificates face the risk of being abused: modified or duplicated. Protection against digital certificates is necessary to avoid these abuses. One of the cryptographic technique used to ensure data integrity is hash function. This research used an algorithm called MD6, which is improvement of MD5 algorithm avoiding collision that had been found in MD5. In this research, the MD6 algorithm is implemented sequentially and uses two optional operators, the length (d) and the key (K). The MD6 hash function convert the digital certificates into a series of message digest which will be the references of integrity verification from a digital certificates. The digital certificates which has been modified will produce different message digest when compared with the message digest of the original certificates. The MD6 algorithm be able to avoid collision.
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Judul: Protokol legalisasi digital menggunakan algoritme MD5 dan RSA
Abstrak: The need for legalization of certificate diplomas and transcripts to apply for a job is a reasonable requirement, but sometimes the collection deadline given is very short. Noting the need for rapid validation system for the legalization of certificate diplomas and transcripts, a securing system that can legalize and give legitimacy to the diploma and transcript is needed. One of these mechanisms is digital signatures. This research applied MD5 and RSA to create digital signatures of certificate diplomas and transcripts. MD5 is a function that processes an arbitrary length inputs into outputs with a fixed length, ie 128 bits. RSA is an encryption-decryption asymmetric algorithm. The key used to encrypt a plaintext differs from the key used to decrypt the ciphertext into its original plaintext. Digital signatures generated from the plaintext by using the MD5 algorithm is then encrypted using the RSA algorithm. The result of RSA encryption called digital signatures. The implementation of digital signatures can shorten the time digital legalization of certificate diplomas and transcripts and ensure the security and validity of information
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Judul: Prevalence of Bird Lice on Rock Pigeon (Columba livia) in 99Wonderland Park, Selangor, Malaysia
Abstrak: Rock Pigeon (Columba livia) have coexisted with humans for thousands of years and are used for various purposes such as food and in sports. Rock pigeons may have the potential to be infested with a wide range of ectoparasites, which can have a significant impact on their life cycle. This study aims to measure the prevalence of Columba livia with bird lice in 99Wonderland Park, Selangor, Malaysia in the year 2020 and to ascertain the impact of bird lice on the health of these infested birds. Data were collected from clinical records for the month of January to December in the year 2020 from 99Wonderland Park, Selangor, Malaysia. Lice were identified in 42 of the 80 Rock pigeons examined so, the overall prevalence of lice infestations was 52.5%. The prevalence of ectoparasites was found to be higher in young Rock pigeons (60.4%) as compared to adult Rock pigeons (37.4%). Columbicola columbae (wing lice) and Colpocephalum turbinatum (body lice) are two species of lice that have been detected. Body lice were more prevalent in young Columba livia birds at 47.6% whereas wing lice were more prevalent in adult Columba livia birds at 16.7%. Most of the lice were found in the thorax and abdomen area followed by the head and neck area., Merpati Batu (Columba livia) telah hidup berdampingan dengan manusia selama ribuan tahun dan digunakan untuk berbagai keperluan seperti makanan dan olahraga. Merpati batu dapat terinfestasi dengan berbagai ektoparasit, yang dapat berdampak signifikan pada siklus hidup mereka. Penelitian ini bertujuan untuk mengetahui prevalensi Columba livia dengan kutu burung di 99 Wonderland Park, Selangor, Malaysia pada tahun 2020 dan untuk memastikan dampaknya terhadap kesehatan burung yang terinfestasi. Data dikumpulkan dari catatan klinis dari bulan Januari hingga Desember tahun 2020 dari 99Wonderland Park, Selangor, Malaysia. Kutu diidentifikasi pada 42 dari 80 merpati batu yang diperiksa sehingga, prevalensi keseluruhan infestasi kutu adalah 52,5%. Prevalensi ektoparasit ditemukan lebih tinggi pada merpati batu muda (60,4%) dibandingkan dengan merpati batu dewasa (37,4%). Columbicola columbae (kutu sayap) dan Colpocephalum turbinatum (kutu badan) adalah dua spesies kutu yang telah ditemukan. Kutu badan lebih banyak ditemukan pada burung Columba livia muda sebesar 47,6% sedangkan kutu sayap lebih banyak ditemukan pada burung Columba livia dewasa sebesar 16,7%. Sebagian besar kutu ditemukan di daerah dada dan abdomen diikuti daerah kepala dan leher.
Keyword: Columba livia, prevalence, ectoparasite, wing lice, body lice, Columba livia, prevalensi, ektoparasit, kutu sayap, kutu badan