Nihilist Number Code
–Nihilist cipher is a manually operated symmetric encryption cipher originally used by Russian Nihilists in the 1880's to organize terrorism against the tsarist regime. The term is sometimes extended to several improved algorithms used much later for communication by the First Chief Directorate with its spies.
This code requires a KEYWORD and the Polybius square. And, simple mathematics.
Sa mga hindi po nakaka-alam ng Polybius square it looks like this:
0 1 2 3 4 5
1 A B C D E
2 F G H I/J K
3 L M N O P
4 Q R S T U
5 V W X Y Z
How to make a Nihilist Number Code?
So, let's make an example. The keyword will be JILL. And the plaintext (hidden message) will be WE ARE THE PECULIARS. After that, do this (newbie style):
(Legend: P – Plaintext) (K – Keyword)
P — K
W — J
E — I
A — L
R — L
E —J
T — I
H — L
E — L
P — J
E — I
C — L
U — L
L — J
I — I
A — L
R — L
S — J
Use Polybius Square for the Plaintext and also for the Keyword for their equivalents. Like this
P — K
W (52) — J (24)
E (15) — I (24)
A (11) — L (31)
R (42) — L (31)
E (15) —J (24)
T (44) — I (24)
H (23) — L (31)
E (15) — L (31)
P (35) — J (24)
E (15) — I (24)
C (13) — L (31)
U (45) — L (31)
L (31) — J (24)
I (24) — I (24)
A (11) — L (31)
R (42) — L (31)
S (43) — J (24)
After getting their equivalents using POLYBIUS SQUARE, let's do the simple math: ADDITION.
So it will look like this:
P — K
W = 76
E = 39
A = 42
R = 73
E = 39
T = 68
H = 54
E = 46
P = 59
E = 39
C = 44
U = 76
L = 55
I = 48
A = 42
R = 73
S = 67
The encrypted form will look like this:
76 39 42 73 39 68 54 46 59 39 44 76 55 48 42 73 67
You can put symbols for division like hypen (-), or slash (/), or this (>). Also to make it look like a hard code.
To decrypt Nihilist, you need to look for the keyword. For example: 76 is the code and JILL is the keyword. Look for polybius and the equivalent of J, which is 24 then subtract it to 76 The result will be 52 which is "W" in polybius. Repeat the process until you finish the Decrypted text.
How to decode Nihilist Number Code?
Example:76 39 42 73 39 68 54 46 59 39 44 76 55 48 42 73 67
Plaintext: JILL
Dapat may kopya ng Polybius Square
1 2 3 4 5
1 A B C D E
2 F G H I/J K
3 L M N O P
4 Q R S T U
5 V W X Y Z
Hanapin ang polybius ng JILL
J-24
I-24
L-31
L-3
Tapos i-minus ang codes sa JILL na nakapolybius na
76-24=52
39-24=15
42-31=11
73-31=42
39-24=15
68-24=44
54-31=23
46-31=15
59-24=35
39-24=15
44-31=13
76-31=45
55-24=31
48-24=24
42-31=11
73-31=42
67-24=43
Hanapin ang katumbas na letter sa polybius square
1 2 3 4 5
1 A B C D E
2 F G H I/J K
3 L M N O P
4 Q R S T U
5 V W X Y Z
52-W
15-E
11-A
42-R
15-E
44-T
23-H
15-E
35-P
15-E
13-C
45-U
31-L
24-I/J
11-A
42-R
43-S
Ang meaning ng code na 76 38 42 73 39 68 54 46 59 39 44 76 55 48 42 73 67 ay WE ARE THE PECULIARS
