rimey - written in most popular ciphers: caesar cipher, atbash, polybius square , affine cipher, baconian cipher, bifid cipher, rot13, permutation cipher

Caesar cipher

Caesar cipher, is one of the simplest and most widely known encryption techniques. The transformation can be represented by aligning two alphabets, the cipher alphabet is the plain alphabet rotated left or right by some number of positions.

When encrypting, a person looks up each letter of the message in the 'plain' line and writes down the corresponding letter in the 'cipher' line. Deciphering is done in reverse.
The encryption can also be represented using modular arithmetic by first transforming the letters into numbers, according to the scheme, A = 0, B = 1,..., Z = 25. Encryption of a letter x by a shift n can be described mathematically as

Plaintext: rimey

cipher variations:
sjnfz	tkoga	ulphb	vmqic	wnrjd
xoske	yptlf	zqumg	arvnh	bswoi
ctxpj	duyqk	evzrl	fwasm	gxbtn
hycuo	izdvp	jaewq	kbfxr	lcgys
mdhzt	neiau	ofjbv	pgkcw	qhldx

Decryption is performed similarly,

(There are different definitions for the modulo operation. In the above, the result is in the range 0...25. I.e., if x+n or x-n are not in the range 0...25, we have to subtract or add 26.)
Read more ...

Atbash Cipher

Atbash is an ancient encryption system created in the Middle East. It was originally used in the Hebrew language.
The Atbash cipher is a simple substitution cipher that relies on transposing all the letters in the alphabet such that the resulting alphabet is backwards.
The first letter is replaced with the last letter, the second with the second-last, and so on.
An example plaintext to ciphertext using Atbash:

Plain:	rimey
Cipher:	irnvb

Baconian Cipher

To encode a message, each letter of the plaintext is replaced by a group of five of the letters 'A' or 'B'. This replacement is done according to the alphabet of the Baconian cipher, shown below.

a   AAAAA   g    AABBA     m    ABABB   s    BAAAB     y    BABBA
b   AAAAB   h    AABBB     n    ABBAA   t    BAABA     z    BABBB
c   AAABA   i    ABAAA     o    ABBAB   u    BAABB 
d   AAABB   j    BBBAA     p    ABBBA   v    BBBAB
e   AABAA   k    ABAAB     q    ABBBB   w    BABAA
f   AABAB   l    ABABA     r    BAAAA   x    BABAB

Plain:	rimey
Cipher:	BAAAA ABAAA ABABB AABAA BABBA

Affine Cipher
In the affine cipher the letters of an alphabet of size m are first mapped to the integers in the range 0..m - 1. It then uses modular arithmetic to transform the integer that each plaintext letter corresponds to into another integer that correspond to a ciphertext letter. The encryption function for a single letter is

where modulus m is the size of the alphabet and a and b are the key of the cipher. The value a must be chosen such that a and m are coprime.
Considering the specific case of encrypting messages in English (i.e. m = 26), there are a total of 286 non-trivial affine ciphers, not counting the 26 trivial Caesar ciphers. This number comes from the fact there are 12 numbers that are coprime with 26 that are less than 26 (these are the possible values of a). Each value of a can have 26 different addition shifts (the b value) ; therefore, there are 12*26 or 312 possible keys.
Plaintext: rimey

cipher variations:

sjnfz

azlnv

ipjvr

qfhdn

yvflj

gldtf

wrzjx

ehxrt

mxvzp

unthl

cdrph

ktpxd

tkoga

bamow

jqkws

rgieo

zwgmk

hmeug

xsaky

fiysu

nywaq

vouim

desqi

luqye

ulphb

cbnpx

krlxt

shjfp

axhnl

infvh

ytblz

gjztv

ozxbr

wpvjn

eftrj

mvrzf

vmqic

dcoqy

lsmyu

tikgq

byiom

jogwi

zucma

hkauw

paycs

xqwko

fgusk

nwsag

wnrjd

edprz

mtnzv

ujlhr

czjpn

kphxj

avdnb

ilbvx

qbzdt

yrxlp

ghvtl

oxtbh

xoske

feqsa

nuoaw

vkmis

dakqo

lqiyk

bweoc

jmcwy

rcaeu

zsymq

hiwum

pyuci

yptlf

gfrtb

ovpbx

wlnjt

eblrp

mrjzl

cxfpd

kndxz

sdbfv

atznr

ijxvn

qzvdj

zqumg

hgsuc

pwqcy

xmoku

fcmsq

nskam

dygqe

loeya

tecgw

buaos

jkywo

rawek

arvnh

ihtvd

qxrdz

ynplv

gdntr

otlbn

ezhrf

mpfzb

ufdhx

cvbpt

klzxp

sbxfl

bswoi

jiuwe

rysea

zoqmw

heous

pumco

faisg

nqgac

vgeiy

dwcqu

lmayq

tcygm

ctxpj

kjvxf

sztfb

aprnx

ifpvt

qvndp

gbjth

orhbd

whfjz

exdrv

mnbzr

udzhn

duyqk

lkwyg

taugc

bqsoy

jgqwu

rwoeq

hckui

psice

xigka

fyesw

nocas

veaio

evzrl

mlxzh

ubvhd

crtpz

khrxv

sxpfr

idlvj

qtjdf

yjhlb

gzftx

opdbt

wfbjp

fwasm

nmyai

vcwie

dsuqa

lisyw

tyqgs

jemwk

rukeg

zkimc

haguy

pqecu

xgckq

gxbtn

onzbj

wdxjf

etvrb

mjtzx

uzrht

kfnxl

svlfh

aljnd

ibhvz

qrfdv

yhdlr

hycuo

poack

xeykg

fuwsc

nkuay

vasiu

lgoym

twmgi

bmkoe

jciwa

rsgew

ziems

izdvp

qpbdl

yfzlh

gvxtd

olvbz

wbtjv

mhpzn

uxnhj

cnlpf

kdjxb

sthfx

ajfnt

jaewq

rqcem

zgami

hwyue

pmwca

xcukw

niqao

vyoik

domqg

lekyc

tuigy

bkgou

kbfxr

srdfn

ahbnj

ixzvf

qnxdb

ydvlx

ojrbp

wzpjl

epnrh

mflzd

uvjhz

clhpv

lcgys

tsego

bicok

jyawg

royec

zewmy

pkscq

xaqkm

fqosi

ngmae

vwkia

dmiqw

mdhzt

utfhp

cjdpl

kzbxh

spzfd

afxnz

qltdr

ybrln

grptj

ohnbf

wxljb

enjrx

neiau

vugiq

dkeqm

lacyi

tqage

bgyoa

rmues

zcsmo

hsquk

piocg

xymkc

foksy

ofjbv

wvhjr

elfrn

mbdzj

urbhf

chzpb

snvft

adtnp

itrvl

qjpdh

yznld

gpltz

pgkcw

xwiks

fmgso

nceak

vscig

diaqc

towgu

beuoq

juswm

rkqei

zaome

hqmua

qhldx

yxjlt

gnhtp

odfbl

wtdjh

ejbrd

upxhv

cfvpr

kvtxn

slrfj

abpnf

irnvb

rimey

zykmu

hoiuq

pegcm

xueki

fkcse

vqyiw

dgwqs

lwuyo

tmsgk

bcqog

jsowc

The decryption function is

where a - 1 is the modular multiplicative inverse of a modulo m. I.e., it satisfies the equation

The multiplicative inverse of a only exists if a and m are coprime. Hence without the restriction on a decryption might not be possible. It can be shown as follows that decryption function is the inverse of the encryption function,

ROT13 Cipher
Applying ROT13 to a piece of text merely requires examining its alphabetic characters and replacing each one by the letter 13 places further along in the alphabet, wrapping back to the beginning if necessary. A becomes N, B becomes O, and so on up to M, which becomes Z, then the sequence continues at the beginning of the alphabet: N becomes A, O becomes B, and so on to Z, which becomes M. Only those letters which occur in the English alphabet are affected; numbers, symbols, whitespace, and all other characters are left unchanged. Because there are 26 letters in the English alphabet and 26 = 2 * 13, the ROT13 function is its own inverse:

ROT13(ROT13(x)) = x for any basic Latin-alphabet text x

An example plaintext to ciphertext using ROT13:

Plain:	rimey
Cipher:	evzrl

Polybius Square

A Polybius Square is a table that allows someone to translate letters into numbers. To give a small level of encryption, this table can be randomized and shared with the recipient. In order to fit the 26 letters of the alphabet into the 25 spots created by the table, the letters i and j are usually combined.

	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

Basic Form:

Plain:	rimey
Cipher:	2442235145

Extended Methods:
Method #1

Plaintext: rimey

method variations:
workd	btwpi	gybuo	mdgzt

Method #2
Bifid cipher
The message is converted to its coordinates in the usual manner, but they are written vertically beneath:

r i m e y 
2 4 2 5 4 
4 2 3 1 5

They are then read out in rows:
2425442315
Then divided up into pairs again, and the pairs turned back into letters using the square:

Plain:	rimey
Cipher:	rwtmv

Read more ...
Method #3

Plaintext: rimey

method variations:
tgxqk	gxqkt	xqktg
qktgx	ktgxq

Read more ...[RUS] , [EN]

Permutation Cipher
In classical cryptography, a permutation cipher is a transposition cipher in which the key is a permutation. To apply a cipher, a random permutation of size E is generated (the larger the value of E the more secure the cipher). The plaintext is then broken into segments of size E and the letters within that segment are permuted according to this key.
In theory, any transposition cipher can be viewed as a permutation cipher where E is equal to the length of the plaintext; this is too cumbersome a generalisation to use in actual practice, however.
The idea behind a permutation cipher is to keep the plaintext characters unchanged, butalter their positions by rearrangement using a permutation
This cipher is defined as:
Let m be a positive integer, and K consist of all permutations of {1,...,m}
For a key (permutation)

, define:
The encryption function

The decryption function

A small example, assuming m = 6, and the key is the permutation

The first row is the value of i, and the second row is the corresponding value of

(i)
The inverse permutation,

is constructed by interchanging the two rows, andrearranging the columns so that the first row is in increasing order, Therefore,

is:

Total variation formula:

e = 2,718281828 , n - plaintext length

Plaintext: rimey

all 120 cipher variations:

rimey

rimye

riemy

rieym

riyem

riyme

rmiey

rmiye

rmeiy

rmeyi

rmyei

rmyie

remiy

remyi

reimy

reiym

reyim

reymi

rymei

rymie

ryemi

ryeim

ryiem

ryime

irmey

irmye

iremy

ireym

iryem

iryme

imrey

imrye

imery

imeyr

imyer

imyre

iemry

iemyr

iermy

ierym

ieyrm

ieymr

iymer

iymre

iyemr

iyerm

iyrem

iyrme

mirey

mirye

miery

mieyr

miyer

miyre

mriey

mriye

mreiy

mreyi

mryei

mryie

meriy

meryi

meiry

meiyr

meyir

meyri

myrei

myrie

myeri

myeir

myier

myire

eimry

eimyr

eirmy

eirym

eiyrm

eiymr

emiry

emiyr

emriy

emryi

emyri

emyir

ermiy

ermyi

erimy

eriym

eryim

erymi

eymri

eymir

eyrmi

eyrim

eyirm

eyimr

yimer

yimre

yiemr

yierm

yirem

yirme

ymier

ymire

ymeir

ymeri

ymrei

ymrie

yemir

yemri

yeimr

yeirm

yerim

yermi

yrmei

yrmie

yremi

yreim

yriem

yrime