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DES-Encrypt

Tugas Kriptografi Enkripsi dengan DES

Requirement

Tugas Kriptografi โ€“ Pertemuan 6,7

Lakukan Enkripsi dengan algoritma DES (Data Encryption Standard) dengan ketentuan sebagai berikut :

  1. Plaintext : DOMISILI
  2. Kunci : CAPSLOCK

Bentuk Pengumpulan :

  1. Dikumpulkan dalam bentuk PDF
  2. Alur yang dilakukan adalah perubahan dari Plaintext menjadi Ciphertext
  3. Terdapat penjelasan langkah per langkah perubahan/perhitungan

Alur code

  1. digunakan dari step I-IV
  2. kemudian dilanjutkan step 1-4
  3. kemudian ketika R16 dan L16 sudah didapatkan maka jalankan step 5

Notes

Penting diketahui bahwa untuk mendapatkan nilai vektor Matriks Ai kita memerlukan Ri. Untuk mendapatkan Ai selanjutnya, step 1-4 dijalankan berurut sebanyak 16x sehingga akan mendapat 1 nilai Ai dan Ri secara berurut di setiap perputaran (step 1-4) dilakukan.

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