Closed Ciphers & codes list ascii type: substitution

[sparta_01]

Thank you ts

 

[ConquerorXXX]

mga codes????

 

[Jover24]

SCYTALE CIPHER
Type: Transposition
> Suppose the rod allows one to write four letters around in a circle and five letters down the side of it. To decrypt, all one must do is wrap the leather strip around the rod and read across.
(Note: make a table and insert there your input, table is based on diameter)
Example message:
Plaintext: Hey i was doing just fine before i met you
Diameter: 7
H|E|Y| I|W|A|S
D|O| I|N|G|J|U
S|T|F| I|N|E|B
E|F|O|R|E| I|M
E|T|Y|O|U|
Ciphertext: HDSEEEOTFTYIFOY
INIROWGNEUAJEISUBM

 

[Jover24]

ROTATION CODE
Type: Substitution
(Note: it's formula forencryption is f(x)=(ax)mod26 and for decryption is f=a^-1mod26, where x or y corresponds to the position of the letter in the alphabet, e.g. a=0, b=1, c=2.....z=25, mod26 correspond to the limit of the rotation, and a correspond to any input number)
Example: (encryption)
Plaintext: KING
F(x)=(ax)mod26
a=2
K=10, f(x)=(2*10)mod26=20
�I =8, f(x)=(2*8)mod26=16
N=13, f(x)=(2*13)mod26=26
G=6, f(x)=(2*6)mod26=12
K=20=U
I =16=Q
N=26=A
G=12=M
Ciphertext: UQAM
Example: (decryption)
Ciphertext: UQAM
F=a^-1mod26
a=2
U=20, f=2^-1(20)mod26=10
Q=16, f=2^-1(16)mod26=8
A=26, f=2^-1(26)mod26=13
M=12, f=2^-1(12)mod26=6
U=10=K
Q=8=I
A=13=N
M=6=G
Plaintext: KING
(Note: mod26, when no>25, then it will rotate back to 0, 26=0, 27=1, 28=2 and so on, where a=0 and z=25, e.g. 30=e)

 

[Onix1000]

thanks sa info paps

 

[Jover24]

AFFINE CIPHER
Type: Substitution
(Note: it's formula for encryption is f(x)=(ax+b)mod n, and for decryption is f=a^-1(y-b)mod n, where "a" should be coprime of "n", "x" or "y" corresponds on the position of the letter in the alphabet (see rotation code), and "b" is any value of input, and mod n is the limit of rotation)
Example: (encryption)
Plaintext: AFFINE
a=5, b=8, n=26
F(x)=(ax+b)mod26
A=0, F(0)=(5(0)+8)mod26=8
F=5, F(5)=(5(5)+8)mod26=33
F=5, F(5)=(5(5)+8)mod26=33
I =8, F(8)=(5(8)+8)mod26=48
N=13, F(13)=(5(13)+8)mod26=73
E=4, F(4)=(5(4)+8)mod26=28
A=08=I
F=33=H
F=33=H
I =48=W
N=73=V
E=28=C
Ciphertext: IHHWVC
Example: (decryption)
Ciphertext: IHHWVC
a=5, b=8, n=26
F=a^-1(y-b)mod n
I =08, f(8)=5^-1(8-8)mod26=0
H=33, f(33)=5^-1(33-8)mod26=5
H=33, f(33)=5^-1(33-8)mod26=5
W=48, f(48)=5^-1(48-8)mod26=8
V=73, f(73)=5^-1(73-8)mod26=13
C=28, f(28)=5^-1(28-8)mod26=4
I =0=A
H=5=F
H=5=F
W=8=I
V=13=N
C=5=E
Plaintext: AFFINE

 

[sparta_01]

Thanks ulit ts

 

[Kariya Kagetoki]

para saan po to?

 

[marc_26super]

thanks sa info

 

[Jover24]

RAIL FENCE CIPHER
Type: Transposition
(Note: shift depends on no. key or rails, and letters should be written downward and diagonally, let `=no. of shift or rails)
Plaintext: HEY I JUST MET YOU AND THIS IS CRAZY
shift: 3
h ` ` ` j ` ` ` m ` ` ` o ` ` ` d ` ` ` s ` ` ` r ` ` `
` e ` i ` u ` t ` e ` y ` u ` n ` t ` i ` i ` c ` a ` y
` ` y ` ` ` s ` ` ` t ` ` ` a ` ` ` h ` ` ` s ` ` ` z `
Ciphertext:
HJMODSREIUTEYUNTIICAYYSTAHSZ

 

[sparta_01]

Thanks ulit ts

 

[sparta_01]

Thanks ulit ts bk meron kapa jan ts

 

[Jover24]

BIFID CIPHER
Type: Substitution
CIPHER: First column and firs row contains numbers while the rest is letters)
A B C D E
A|A|B|C|D|E
B|F|G|H|J|K
C|L|M|N|O|P
D|Q|R|S|T|U
E|V|W|X|Y|Z
Ciphertext: CB CD CC BD AA ED
Plaintext: M O N D A Y

 

[Jover24]

VIGENERE CIPHER
Type: Substitution
(Note: keywords sets at the starting point of alphabet and keyword shoud be inserted in the first column of the table mot in the row, keyword shoud be repeated until it reach the same value or no. of the text )
Image Link:
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nc_ad=z-m&oh=544b4fdda2362e479
634b09ccf6f9ecd&oe=594CFECE
Example:
Plaintext: JUPITER
Keyword: mapsmap
(See vigenere table)
Ciphertext: VUEAFEG

 

[K I N J A Z]

pwede i as one mo nalang ts? nakarami rami kana rin ng thread na nagawa. flooded yung new topics page

 

[Jover24]

HITMAN CIPHER
If A is A then N is N.
A~A
B~Z
C~Y
D~X
E~W
F~V
G~U
H~T
I~S
J~R
K~Q
L~P
M~O
N~N
Example
Ciphertext: TSHOAN
Plaintext: HITMAN

 

[Jover24]

POLYBIUS SQUARE
Type: Numbers
> Polybius square, also known as the Polybius checkerboard, is a device invented by the Ancient Greekhistorian and scholar Polybius, for fractionating plaintext characters so that they can be represented by a smaller set of symbols.
(Note: create a table of any size, readings should start in column then row)
Example:5x5
Example: 5x5
1 2 3 4 5
1|A|B|C|D|E|
2|F|G|H| I |K|
3|L|M|N|O|P|
4|Q|R|S|T|U|
5|V|W|X|Y|Z|
Ciphertext: 3,2 3,4 3,3 4,3 4,4 1,5 4,2 or
Ciphertext: 32 34 33 43 44 15 42
Plaintext: MONSTER

 

[RrJj]

keep on sharing

 

[sparta_01]

Thanks ts, may nakita me na ganyang message sa fb kaso di ko maintindihan

 

[Wakokek]

Maraming salamat po