Kriptografi

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
PlainABCDEFGHIJKLMNOPQRSTUVWXYZCipherDEFGHIJKLMNOPQRSTUVWXYZABCPlainABCDEFGHIJKLMNOPQRSTUVWXYZCipherDKVQFIBJWPESCXHTMYAUOLRGZN

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
PlainABCDEFGHIJKLMNOPQRSTUVWXYZCipherAMIKOPQRSTUVWXYZBCDEFGHJLN

6. Polyalphabetic Cipher
•Vigenere CiPHER
TEMPATKULIAHCALONPENGUSAHAKeywordAMIKOMAMIKOMAMIKOMAMIKOMAMTQUZOFKGTSOTCMTYBBEZOEGMHMPlaintextCiphertextABCDEFGHIJKLMNOPQRSTUVWXYZAABCDEFGHIJKLMNOPQRSTUVWXYZMMNOPQRSTUVWXYZABCDEFGHIJKLIIJKLMNOPQRSTUVWXYZABCDEFGHKKLMNOPQRSTUVWXYZABCDEFGHIJOOPQRSTUVWXYZABCDEFGHIJKLMN

7. Polyalphabetic Cipher
•Beuford Cipher
TEMPATKULIAHCALONPENGUSAHAKeywordAMIKOMAMIKOMAMIKOMAMIKOMAMHIWVOTQSXCOFYMXWBXWZCQWMTMPlaintextCiphertextABCDEFGHIJKLMNOPQRSTUVWXYZAAZYXWVUTSRQPONMLKJIHGFEDCBMMLKJIHGFEDCBAZYXWVUTSRQPONIIHGFEDCBAZYXWVUTSRQPONMLKJKKJIHGFEDCBAZYXWVUTSRQPONMLOONMLKJIHGFEDCBAZYXWVUTSRQP

8. Polyalphabetic Cipher
•Varian Beuford Cipher
TEMPATKULIAHCALONPENGUSAHAKeywordAMIKOMAMIKOMAMIKOMAMIKOMAMGHVUNSQRWBPEXLWVAWVABPVLSLPlaintextCiphertextABCDEFGHIJKLMNOPQRSTUVWXYZAZYXWVUTSRQPONMLKJIHGFEDCBAMLKJIHGFEDCBAZYXWVUTSRQPONMIHGFEDCBAZYXWVUTSRQPONMLKJIKJIHGFEDCBAZYXWVUTSRQPONMLKONMLKJIHGFEDCBAZYXWVUTSRQPO

9. Polyalphabetic Cipher
•Autokey Cipher
•Book Chiper
–Mengambil kunci dari suatu alamat buku
TEMPATKULIAHCALONPENGUSAHAKeywordAMIKOMTEMPATKULIAHCALONPENPlaintext

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:
TEMPATKULIAHCALONPENGUSAHA1234512345Key(W)25413R41532TEMPAEAPTMTKULIKILTUAHCALHLAACONPENNNEOPGUSAHUHAGSAAAAAAAAAAPlaintextAMIKOMKeyword142356Kunci

12. Transposition Cipher
•Block(Cloumnar) Transposition Cipher
Chipertext : EKH NUAA ILNHA PLAE AATTAO GAMUC PSA
PlaintextTEMPATKULIAHCALONPENGUSAHA1234512345Key(W)25413R41532TEMPAEAPTMTKULIKILTUAHCALHLAACONPENNNEOPGUSAHUHAGSAAAAAAAAAA

13. Transposition Cipher
•Nihilist Transposition Cipher
Chipertext : NNEO PEAP TMUH AGSH LAAC KIL TUAA AAA
TEMPATKULIAHCALONPENGUSAHA1234512345Key(W)25413TEMPA2EAPTMTKULI5KILTUAHCAL4HLAACONPEN1NNEOPGUSAH3UHAGSAAAAA6AAAAAPlaintext

14. Transposition Cipher
•Diagonal Transposition Cipher
Chipertext : EAKHI PTLLN UNAT MUAE JAAAO CPGA ASA
TEMPATKULIAHCALONPENGUSAHA1234512345Key(W)25413TEMPAEAPTMTKULIKILTUAHCALHLAACONPENNNEOPGUSAHUHAGSAAAAAAAAAAPlaintext

15. Transposition Cipher
•ADFGVX Product Transposition Cipher
Plaintext : AMIKOM
Intermediate : GV XX XF AA VD XX
ADFGVXAKZWR1FD9B6CL5FQ7JFGXGEVY3ANV8ODH02XU4ISTM

16. Transposition Cipher
•Plaintext : AMIKOM
•Intermediate : GV XX XF AA VD XX
–Kemudian dilakukan transposisi dengan suatu kunci
–mis key : DASI (2143)
–Ciphertext : VFDGXV XAXXAX
2143GVXXVGXXXFAAFXAAVDXXDVXX