Perkuliahan Minggu ke13, (24-27 Nopember 2020), Matakuliah : Keamanan Sistem Komputer (C31040319)
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SOAL
Carilah cipher textberdasarkan proses Enkripsi,
Pesan “SUMPAHPEMUDA”,KUNCI=KEJUJURAN
Lakukan pengembalian pesan dengan proses Deskripsi.
|
Pesan (Baris) |
S |
U |
M |
P |
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A |
||||||||||
|
Kunci (Kolom) |
K |
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J |
||||||||||
|
Enkripsi (Baris, Kolom) |
(S,K)=C |
(U,E)=Y |
(M,J)=V |
(P,U)=J |
(A,J)=J |
(H,U)=B |
(P,R)=G |
(E,A)=E |
(M,N)=Z |
(U,K)=E |
(D,E)=H |
(A,J)=J |
||||||||||
|
Enkripsi Tahapan |
Tempatkan HURUF PESAN pada ruang BARIS,
kemudian cari HURUF KUNCI pada ruang KOLOM, sehingga titik temu (ISI) antara BARIS
dan KOLOM dari setiap huruf adalah Cipher Text |
|||||||||||||||||||||
|
Cipher Text |
CYVJJB GEZEHJ |
|||||||||||||||||||||
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Deskripsi (Chipper Kunci) |
S |
U |
M |
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||||||||||
|
Deskripsi Tahapan |
Berdasarkan HURUF Cipher Text yang berada di
titik ISI table acuan carilah HURUF KUNCI pada bagian KOLOM sejajar, sehingga
HURUF PESAN dapat ditemukan pada bagian BARIS sejajar |
|||||||||||||||||||||
|
Plain Text |
SUMPAH PEMUDA |
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