Lembaran Aktiviti 5b_ Rail Fence Cipher.docx

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Lembaran Aktiviti 5b: Transposition Cipher (B) Jenis: Rail Fence Cipher or Zig-zag Cipher Proses: Penyulitan Teks biasa yang perlu disulitkan: PERISIK IALAH ZAMRI Kunci = 3 (3 baris) Langkah 1: Sediakan jadual: Bilangan lajur = bilangan abjad teks biasa Bilangan baris = kunci

Langkah 2: 1. Isi abjad teks biasa dalam jadual mengilut corak zig-zag baris demi baris. 2. Baca abjad secara melintang mulai baris pertama. Teks sifer ialah

Proses: Nyahsulit Teks sifer: KTLLAILHPLAAAUNAAEA Kunci = 2

Langkah 1: Sediakan jadual: Bilangan lajur = bilangan abjad teks biasa Bilangan baris = kunci

Langkah 2: 1. Tandakan petak menggunakan “-“ dalam bentuk zig-zag pada jadual. 2. Isi teks sifer, bermula dengan baris pertama. 3. Baca abjad mengikut corak zig-zag dan mengecam mesej yang ingin disampaikan. Teks biasa ialah