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Kriptografi. Kritografi ● Kritografi “kuno” – Subtitusi Cipher – Transposisi Cipher ● Kriptografi Modern.

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Presentasi berjudul: "Kriptografi. Kritografi ● Kritografi “kuno” – Subtitusi Cipher – Transposisi Cipher ● Kriptografi Modern."— Transcript presentasi:

1 Kriptografi

2 Kritografi ● Kritografi “kuno” – Subtitusi Cipher – Transposisi Cipher ● Kriptografi Modern

3 Kriptografi Kuno ● Subtitution Cipher – Monoalphabetic Cipher – Polyalphabetic Cipher ● Transposition Cipher – Mirror/Reverse, Rail Fence, Geometric Figure – Row Transposition Cipher – Block Transposition Cipher – ADVGFX Product Cipher

4 Monoalphabetic Cipher ● Caesar Chiper – L FDPH L VDZ L FRQTXHUHG – I CAME I SAW I CONQUERED ● Mixed Monoalphabetic Cipher – A M I K O M – D C W E H C

5 Monoalphabetic Cipher ● Easier Monoalphabetic Cipher – B E R D A S I – M O C K A D S ● Kelemahan : – Frekuensi kemunculan huruf tidak dapat dihilangkan

6 Polyalphabetic Cipher ● Vigenere CiPHER

7 Polyalphabetic Cipher ● Beuford Cipher

8 Polyalphabetic Cipher ● Varian Beuford Cipher

9 Polyalphabetic Cipher ● Autokey Cipher ● Book Chiper – Mengambil kunci dari suatu alamat buku

10 Transposition Cipher ● Reverse Cipher – AHAS UGNE PNOLA CTAP METMO KIMA ● Rail Fence cipher – JLN AIR NYGA ATA AKLU AGOY KRA ● Geometric Figure – KSEDIR IFERAP TRHA NAGO

11 Transposition Cipher ● Row Transposition Cipher Chipertext : EAPTM KILTU HLAAC NNEOP UHAGS AAAAA – Kunci :

12 Transposition Cipher ● Block(Cloumnar) Transposition Cipher Chipertext : EKH NUAA ILNHA PLAE AATTAO GAMUC PSA

13 Transposition Cipher ● Nihilist Transposition Cipher Chipertext : NNEO PEAP TMUH AGSH LAAC KIL TUAA AAA

14 Transposition Cipher ● Diagonal Transposition Cipher Chipertext : EAKHI PTLLN UNAT MUAE JAAAO CPGA ASA

15 Transposition Cipher ● ADFGVX Product Transposition Cipher Plaintext : AM I KO M Intermediate : GV XX XF AA VD XX

16 Transposition Cipher ● Plaintext : AM I KO M ● Intermediate : GV XX XF AA VD XX – Kemudian dilakukan transposisi dengan suatu kunci – mis key : DASI (2143) – Ciphertext : VFDGXV XAXXAX


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