19. Sandi Caesar
A = D N = Q
B = E O = R
C = F P = S
D = G Q = T
E = H R = U
F = I S = V
G = J T = W
H = K U = X
I = L V = Y
J = M W = Z
K = N X = A
L = O Y = B
M = P Z = C

20. Sandi Kardinal
A= KT N= SN
B= KE O= SO
C= KR P= IT
D= KI Q=IE
E= KM R= IR
F= AT S= II
G= AE T= IM
H= AR U= HT
I= AI V= HE
J= AM W= HR
K= SK X= HI
L= SL Y= HM
M= SM Z= HA

21. Sandi ASCII
68 = D 117 = U
111 = O 105 = I
107 = K 116 = T
116 = T 117 = U
101 = E 103 = G
114 = R 105 = I
107 = K 108 = L
101 = E 97 = A
106 = J

22. Sandi Geser
A=R H=K
B=Q I=J
C=P S=Z
D=O T=Y
E=N U=X
F= M V=W
G=L

23. Sandi Angka ((1))
A = 0 N = 13
B = 1 O = 14
C = 2 P = 15
D = 3 Q = 16
E = 4 R = 17
F = 5 S = 18
G = 6 T = 19
H = 7 U = 20
I = 8 V = 21
J = 9 W = 22
K = 10 X = 23
L = 11 Y = 24
M = 12 Z = 25

24. Sandi Angka ((2))
A = 2 N = (=)
B = 6 O = 0
C = ; P = _
D = 5 Q = 99
E = , R = O,
F = c S = 8
G = 9 T = +
H = 4 U = c2
I = 1 V = <
J = > W = j
K = X X = k
L = 90 Y = v
M = 3 Z = Z

25. Sandi Rush Code
A = 2 N = 66
B = 22 O = 666
C = 222 P = 7
D = 3 Q = 77
E = 33 R = 777
F = 333 S = 7777
G = 4 T = 8
H = 44 U = 88
I = 444 V = 888
J = 5 W = 9
K = 55 X = 99
L = 555 Y = 999
M = 6 Z = 9999

26. Sandi Cipher Trithemian
A = 111 N = 222 * = 333
B = 112 O = 223
C = 113 P = 231
D = 121 Q = 232
E = 122 R = 233
F = 123 S = 311
G = 131 T = 312
H = 132 U = 313
I = 133 V = 321
J = 211 W = 322
K = 212 X = 323
L = 213 Y = 331
M = 221 Z = 332

27. Sandi Homophonic
(tabel angka) A-B-C-D-E-F-G-H-I-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
(baris 1) 01-02-03-04-05-06-07-08-09-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25
(baris 2) 26-27-28-29-30-31-32-33-34-35-36-37-38-39-40-41-42-43-44-45-46-47-48-49-50
(baris 3) 51-52-53-54-55-56-57-58-59-60-61-62-63-64-65-66-67-68-69-70-71-72-73-74-75
(baris 4) 76-77-78-79-80-81-82-83-84-85-86-87-88-89-90-91-92-93-94-95-96-97-98-99-00

28. Sandi Bacon
A = aaaaa N = abbaa
B = aaaab O = abbab
C = aaaba P = abbba
D = aaabb Q = abbbb
E = aabaa R = baaaa
F = aabab S = baaab
G = aabba T = baaba
H = aabbb U/V = baabb
I/J = abaaa W = babaa
K = abaab X = babab
L = ababa Y = babba
M = ababb Z =babbb

29. Sandi Zigzag
Contoh :
R I C
V R A
E N S
[cara bacanya zig zag]
dibaca RIVER CANS