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ANALISIS KOMBINASI ALGORITMA KRIPTOGRAFI RSA DAN ALGORITMA STEGANOGRAFI LEAST SIGNIFICANT BIT (LSB) DALAM PENGAMANAN PESAN DIGITAL Taufik Ryan Kuncoro; R. Aditama
STATMAT : JURNAL STATISTIKA DAN MATEMATIKA Vol 1, No 2 (2019)
Publisher : Math Program, Math and Science faculty, Pamulang University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (716.735 KB) | DOI: 10.32493/sm.v1i2.2947

Abstract

Kriptografi dan Steganografi merupakan ilmu yang digunakan untuk merahasiakan informasi dengan prinsip yang berbeda. Kriptografi yaitu sebuah metode untuk menyandikan informasi menjadi kode-kode yang tidak dengan mudah dimengerti oleh orang-orang yang tidak berkepentingan, dan steganografi adalah metode untuk menyembunyikan informasi ke dalam suatu media. Dalam skripsi ini dikembangkan sebuah algoritma kombinasi dari skema kriptografi dan steganografi. Algoritma yang digunakan adalah algoritma Kriptografi RSA dan algoritma Steganografi LSB. Analisis yang dilakukan terhadap kombinasi algoritma dalam skripsi ini meliputi analisis terhadap waktu proses, tingkat kesamaan citra digital setelah proses, dan keamanan informasi ketika dilakukan perubahan pada citra digital serta pengiriman media melalui aplikasi tertentu. Setelah dilakukan analisis dan implementasi terhadap kombinasi kedua metode tersebut, didapat bahwa algoritma kriptografi RSA dapat digabungkan dengan algoritma steganografi LSB dalam pengamanan pesan digital. Setelah dilakukan pengujian terhadap data didapat bahwa pesan yang dirahasiakan dapat kembali diperoleh secara utuh. Waktu proses tercepat yang diperlukan adalah 0.09 detik dan yang terlama adalah 1.285 detik. Nilai PSNR terkecil 53.0696 dB dan nilai terbesar adalah 66.2185 dB. Citra digital yang digunakan untuk menyimpan hasil enkripsi harus disimpan dalam bentuk citra bitmap tanpa dilakukan perubahan terhadap citra dan dapat dikirim dengan menggunakan e-mail dan line agar pesan rahasia tetap utuh.Kata kunci: Analisis Kriptografi, Least Significant Bit, RSA, Steganografi.
PENGARUH AUDIT INTERNAL DAN KINERJA KARYAWAN TERHADAP PENGENDALIAN INTERNAL SERTA DAMPAKNYA TERHADAP PENCEGAHAN KECURANGAN DI PT. COMMIT TRANS ANGKASA DENGAN MENGGUNAKAN METODE ANALISIS JALUR Kenny Cendana; R. Aditama; Gerry Sastro
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 5 No. 1 (2024): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v5i1.529

Abstract

This study aims to determine the effect of Internal Audit (X1), Employee Performance (X2) on Internal Control (Y) with the variable Intervening Fraud Prevention (Z) at PT. TransSpace Committee. This research includes causal associative research using a quantitative approach. The sample used in this study amounted to 50 employees of PT. TransSpace Committee. Data was collected using a questionnaire that had been tested for validity and reliability. The data analysis technique used is path analysis. The results of this study are that the contribution of internal audit (X1) to Internal Control (Y) is 0.311, this indicates that the contribution or influence of X1 on Y is 31.1% while the remaining 68.9% is a contribution from the variables other variables not included in the study, and also the contribution of employee performance (X2) to Internal Control (Y) is 0.173, this indicates that the contribution or influence of X2 on Y is 17.3% while the remaining 82.7% is the contribution of other variables not included in the study, and also the magnitude of the contribution of internal audit (X1) to Fraud Prevention (Z) which is equal to 0.307, this indicates that the contribution or influence of X1 on Z is equal to 30.7% while the remaining 69.3% is the contribution of other variables not included in the study, and also the size of the audience's contribution internal t (X1) and internal control (Y) on fraud prevention (Z) which is equal to 0.539, this shows that the contribution or influence of X1 & Y on Z is 53.9% while the remaining 46.1% is a contribution from the variable -Other variables not included in the study, and also the contribution of employee performance (X2) to fraud prevention (Z) is 0.177, this indicates that the contribution or influence of X2 on Z is 17.7% while the remaining is 72.3 % is the contribution of other variables not included in the study, and also the contribution of employee performance (X2) and internal control (Y) to fraud prevention (Z) which is equal to 0.522, this shows that the contribution or influence of X2 & Y to Z is 52.2% while the remaining 47.8% is contributed by other variables not included in the study, and also the amount of k the contribution of internal control (Y) to fraud prevention (Z) is equal to 0.502, this indicates that the contribution or influence of Y on Z is 50.2% while the remaining 49.8% is a contribution from other variables not included in study