KEAMANAN SISTEM KOMPUTER (perkuliahan ke 13)
Semester : 5 (2020/2021)
Jurusan : Teknik Informatika
Mata Kuliah : C31040319 – Keamanan Sistem Komputer
Dosen : Desi Rose Hertina, S.T., M.Kom
NIM : 201831127
Nama : Alan akbar
Asal Daerah : Bengkulu Selatan
VIGNERE
CIPHER
Teknik Vigenere cipher merupakan jenis cipher abjad
majemuk yang paling sederhana. Vigenere cipher menerapkan metode substitusi
poli alfabetik dan termasuk ke dalam kategori kunci simetris dimana kunci yang
digunakan untuk proses enkripsi adalah sama dengan kunci yang digunakan untuk
proses dekripsi.
Pesan : HARI PAHLAWAN
Kunci : INDONESIA
Tabel Acuan
pesan |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
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S |
T |
U |
V |
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X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
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U |
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Y |
Z |
A |
B |
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E |
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H |
I |
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K |
L |
M |
N |
O |
P |
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Y |
Z |
A |
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C |
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E |
F |
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H |
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K |
L |
M |
N |
O |
P |
Q |
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T |
U |
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X |
Y |
Z |
A |
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C |
D |
E |
F |
G |
H |
I |
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K |
L |
M |
N |
O |
P |
Q |
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T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
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T |
U |
V |
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X |
Y |
Z |
A |
B |
C |
D |
E |
F |
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H |
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K |
L |
M |
N |
O |
P |
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Z |
A |
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D |
E |
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H |
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A |
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Z |
A |
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E |
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H |
I |
J |
K |
L |
M |
N |
O |
P |
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T |
U |
V |
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X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
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X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
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K |
L |
M |
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P |
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A |
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E |
F |
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H |
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K |
L |
M |
N |
O |
P |
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T |
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Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
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X |
Y |
Z |
kunnci |
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CONTOH:
PESAN : HARI PAHLAWAN
KUNCI : INDONESIA
Pesan (Baris) |
H |
A |
R |
I |
P |
A |
H |
L |
A |
W |
A |
N |
Kunci (Kolom) |
I |
N |
D |
O |
N |
E |
S |
I |
A |
K |
E |
J |
Enskripsi (baris,kolom) |
(H,I) = P |
(A,N) = N |
(R,D) = U |
(I,O) = W |
(P,N) = C |
(A,E) = E |
(H,S) = Z |
(L,I) = T |
(A,A) = A |
(W,K) = G |
(A,E) = E |
(N,J) = W |
Enskripsi Tahapan |
Tempatkan HURUF PESAN pada ruang BARIS, kemudian
cari HURUF KUNCI pada ruang KOLOM, sehingga titik temu (ISI) antara BARIS dan
KOLOM dari setiap huruf adalah chipper text |
|||||||||||
ChiperText |
PNUW
CEZTAGEW |
|||||||||||
Deskripsi (Chipper, kunci) |
H |
A |
R |
I |
P |
A |
H |
L |
A |
W |
A |
N |
Deskripsi tahapan |
Berdasarkan HURUF chipper text yang berada di titik
ISI table acuan carilah HURUF KUNCI pada bagian KOLOM sejajar, sehingga HURUF
PESAN dapat ditemukan pada bagian BARIS sejajar |
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Plain text |
HARI PAHLAWAN |
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