1. ADFGX Cipher encoder

Text : ABCD efghi
Key : key
Alphabet25 : abcdefghiklmnopqrstuvwxyz

Solution:

Alphabet : abcdefghiklmnopqrstuvwxyz

Build the square:
Fill the 5x5 square row by row by Alphabet : abcdefghiklmnopqrstuvwxyz
and labeling both rows and columns with adfgx

	a	d	f	g	x
a	a	b	c	d	e
d	f	g	h	i	k
f	l	m	n	o	p
g	q	r	s	t	u
x	v	w	x	y	z

Fractionate the plaintext
Remove all the symbols except available in the square.
Each character is replaced by its row and column labels, producing a stream of adfgx pairs.
This step turns the Text into fractionated form

Plaintext	a	b	c	d	e	f	g	h	i
Pairs	aa	ad	af	ag	ax	da	dd	df	dg

Apply the columnar transposition on fractionated message

columnar transposition steps :

Write the plaintext in row-by-row

k 2	e 1	y 3
a	a	a
d	a	f
a	g	a
x	d	a
d	d	d
f	d	g

The columns are sorted alphabetically, based on the keyword and the new table is

e 1	k 2	y 3
a	a	a
a	d	f
g	a	a
d	x	a
d	d	d
d	f	g

Read the ciphertext in column-by-column
aagddd,adaxdf,afaadg

Plaintext	: aaadafagaxdadddfdg
Key	: key
Ciphertext	: aagdddadaxdfafaadg

Plaintext	: abcdefghi
Key	: key
Ciphertext	: aagdddadaxdfafaadg

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2. ADFGX Cipher encoder

Text : hello world
Key : code
Alphabet25 : abcdefghiklmnopqrstuvwxyz

Solution:

Alphabet : abcdefghiklmnopqrstuvwxyz

Build the square:
Fill the 5x5 square row by row by Alphabet : abcdefghiklmnopqrstuvwxyz
and labeling both rows and columns with adfgx

	a	d	f	g	x
a	a	b	c	d	e
d	f	g	h	i	k
f	l	m	n	o	p
g	q	r	s	t	u
x	v	w	x	y	z

Fractionate the plaintext
Remove all the symbols except available in the square.
Each character is replaced by its row and column labels, producing a stream of adfgx pairs.
This step turns the Text into fractionated form

Plaintext	h	e	l	l	o	w	o	r	l	d
Pairs	df	ax	fa	fa	fg	xd	fg	gd	fa	ag

Apply the columnar transposition on fractionated message

columnar transposition steps :

Write the plaintext in row-by-row

c 1	o 4	d 2	e 3
d	f	a	x
f	a	f	a
f	g	x	d
f	g	g	d
f	a	a	g

The columns are sorted alphabetically, based on the keyword and the new table is

c 1	d 2	e 3	o 4
d	a	x	f
f	f	a	a
f	x	d	g
f	g	d	g
f	a	g	a

Read the ciphertext in column-by-column
dffff,afxga,xaddg,fagga

Plaintext	: dfaxfafafgxdfggdfaag
Key	: code
Ciphertext	: dffffafxgaxaddgfagga

Plaintext	: helloworld
Key	: code
Ciphertext	: dffffafxgaxaddgfagga

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