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cshxyz D-19108
Cryptology dibagi menjadi 2 :
Cryptografi
Crypnalisis
Cryptografi adalah cara yang mengolah tata tulisan dalam text sehingga menjadi tata tulisan yg berbeda dan tidak ada makna-nya
Crypnalisis adalah usaha mendapatkan teks terang dari suatu teks sandi yang tidak diketahui sistem serta kunci-kunci-nya
Salah satu contoh
Caesar : sandi geser karena cara penggunaan-nya dengan di geser. Sandi yang paling sederhana.
Dalam Cryptografi bisa di sebut Encrypt ini merupakan bahasa sandi.
Contoh sandi Caesar
D E A T H - 3
D bergeser 3 langkah ke kanan menjadi G
D = E F G
G adalah langkah ke 3
E bergeser 3 langkah ke kanan menjadi H
E = F G H
H adalah langkah ke 3
dst..
D E A T H -3 menjadi G H D W K
Sandi N
Sandi N menggunakan angka pergesar yang berbeda setiap angka-nya
D E A T H
1 2 3 4 5
D bergeser ke kanan 1 langkah, maka menjadi E
E bergeser ke kanan 2 langkah, maka menjadi G
A bergeserk ke kanan 3 langkah, makan menjadi D
dst..
D E A T H
12 3 4 5
Menjadi EGDXM
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