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SANDI BIFID
Sandi bifid adalah sandi dgn tabel 5x5 dimana semua huruf disusun scr urut seperti sandi umum lainnya.
Uniknya, dlm sandi ini huruf I dan J diletakkan di kotak yg sama karena kedua huruf ini dianggap sama
1 2 3 4 5
1 a b c d e
2 f g h i/j k
3 l m n o p
4 q r s t u
5 v w x y z
Cara membaca tabel itu adalah horizontal-vertikal (baris kolom). Kita coba yo.
Misalnya, saya mau menjadikan nama saya sebagai sandi APRIL.
Huruf A berada di baris 1 kolom 1, kita menulisnya A : 11. Trs ulangi langkah ini sampai terbentuk APRIL = 11 35 42 24 31
Selanjutnya, angka tadi disusun secara vertikal atau lurus kebawah seperti :
A P R I L
1 3 4 2 3
1 5 2 4 1
Lalu, angka tadi disusun secara horizontal menjadi 1342315241
lalu pisahkan 2, menjadi
13 42 31 52 41
Kemudian, lakukan 'pencarian' huruf dari angka-angka tadi. Contohnya begini :
13 = C
42 = R
31 = L
52 = W
41 = Q
Jadi kata APRIL akan menjadi CRLWQ jika menggunakan bifid chiper.
WYKSKSIMZO >>>>> Sandi ini merupakan sebuah sandi ciptaan Emile Victor Theodore Myzskowski, seorang pensiunan kolonel militer Perancis.
Cipher ini dipublikasikan melalui buku yg ditulisnya yaitu "Cryptographie Indeschiffrablé" tahun 1902.
Sandi ini bisa dipelajari lebih lanjut ke Link ini
https://t.co/8p3nMYK4JZ
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