Trifid Cipher solver calculator (encoder / decoder)

SolutionHelp

Solution

Solution provided by AtoZmath.com

1. ABCD efghi

2. hello world

Example

1. Trifid Cipher encoder

Text : ABCD efghi
Group Size : 6
Alphabet27 : abcdefghijklmnopqrstuvwxyz+

Solution:

The Trifid cipher is a polyalphabetic substitution cipher, that uses a 3x3x3 cube to represent 27 characters (A-Z+). It converts each letter into 3 coordinates(layer, row, column), then rearrange them and convert them back to letters to get ciphertext

Key_Alphabet = abcdefghijklmnopqrstuvwxyz+

Layer 1

Layer 2

Layer 3

	1	2	3
1	a	b	c
2	d	e	f
3	g	h	i

	1	2	3
1	j	k	l
2	m	n	o
3	p	q	r

	1	2	3
1	s	t	u
2	v	w	x
3	y	z	+

The text is converted to its triplet coordinates (layer, row, column), then written vertically, in group of 6 columns

Plaintext	a	b	c	d	e	f	g	h	i
Text Triplet	111	112	113	121	122	123	131	132	133
Layer	1	1	1	1	1	1	1	1	1
Row	1	1	1	2	2	2	3	3	3
Col	1	2	3	1	2	3	1	2	3

Read each group in rows
111111,111222,123123 | 111,333,123

Now divided up into triplet again and this triplet again turned back to letters

Combined Triplet	111	111	111	222	123	123	111	333	123
Ciphertext	a	a	a	n	f	f	a	+	f

Plaintext	: abcdefghi
Key_Alphabet	: abcdefghijklmnopqrstuvwxyz+
Group Size	: 6
Ciphertext	: aaanffa+f

2. Trifid Cipher encoder

Text : hello world
Group Size : 4
Alphabet27 : abcdefghijklmnopqrstuvwxyz+

Solution:

Key_Alphabet = abcdefghijklmnopqrstuvwxyz+

Layer 1

Layer 2

Layer 3

	1	2	3
1	a	b	c
2	d	e	f
3	g	h	i

	1	2	3
1	j	k	l
2	m	n	o
3	p	q	r

	1	2	3
1	s	t	u
2	v	w	x
3	y	z	+

The text is converted to its triplet coordinates (layer, row, column), then written vertically, in group of 4 columns

Plaintext	h	e	l	l	o	w	o	r	l	d
Text Triplet	132	122	213	213	223	322	223	233	213	121
Layer	1	1	2	2	2	3	2	2	2	1
Row	3	2	1	1	2	2	2	3	1	2
Col	2	2	3	3	3	2	3	3	3	1

Read each group in rows
1122,3211,2233 | 2322,2223,3233 | 21,12,31

Now divided up into triplet again and this triplet again turned back to letters

Combined Triplet	112	232	112	233	232	222	233	233	211	231
Ciphertext	b	q	b	r	q	n	r	r	j	p

Plaintext	: helloworld
Key_Alphabet	: abcdefghijklmnopqrstuvwxyz+
Group Size	: 4
Ciphertext	: bqbrqnrrjp