Judul: Implementasi Digital signature dalam Validasi Online Local E-Government Menggunakan Algoritme RSA dan MD5.
Abstrak: E-Government merupakan salah satu komponen penting dalam instansi pemerintahan. Masyarakat dapat sangat terbantu dengan adanya e-government dalam aktivitas pelayanan publik. Namun seringkali aspek keamanan kurang diperhatikan dalam pengembangan e-government seperti pada validasi permohonan surat keterangan secara online. Hal ini dapat menjadi celah keamanan karena konten dalam permohonan tersebut dapat dengan mudah dirubah dan penerima tidak dapat melakukan verifikasi terhadap keaslian permohonan tersebut. Tujuan penelitian ini adalah mengimplementasikan digital signature pada validasi online sistem local e-government menggunakan algoritme RSA dan MD5. Penelitian ini menghasilkan sistem yang dapat melakukan fungsi dasar pengajuan permohonan dan penerimaan permohonan, serta mampu memberikan layanan standar digital signature seperti pembangkitan kunci, pembangkitan tanda tangan digital, dan verifikasi permohonan. Pengujian terhadap sistem dilakukan berdasarkan skenario yang dibuat serta uji fungsional sistem.
Keyword: digital signature, e-government, keamanan

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: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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