upton - 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: upton

cipher variations:
vqupo	wrvqp	xswrq	ytxsr	zuyts
avzut	bwavu	cxbwv	dycxw	ezdyx
faezy	gbfaz	hcgba	idhcb	jeidc
kfjed	lgkfe	mhlgf	nimhg	ojnih
pkoji	qlpkj	rmqlk	snrml	tosnm

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:	upton
Cipher:	fkglm

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:	upton
Cipher:	BAABB ABBBA BAABA ABBAB ABBAA

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: upton

cipher variations:

vqupo

jugro

xysto

lcevo

zgqxo

nkczo

psado

dwmfo

rayho

fekjo

tiwlo

hmino

wrvqp

kvhsp

yztup

mdfwp

ahryp

oldap

qtbep

exngp

sbzip

gflkp

ujxmp

injop

xswrq

lwitq

zauvq

negxq

biszq

pmebq

rucfq

fyohq

tcajq

hgmlq

vkynq

jokpq

ytxsr

mxjur

abvwr

ofhyr

cjtar

qnfcr

svdgr

gzpir

udbkr

ihnmr

wlzor

kplqr

zuyts

nykvs

bcwxs

pgizs

dkubs

rogds

twehs

haqjs

vecls

jions

xmaps

lqmrs

avzut

ozlwt

cdxyt

qhjat

elvct

sphet

uxfit

ibrkt

wfdmt

kjpot

ynbqt

mrnst

bwavu

pamxu

deyzu

rikbu

fmwdu

tqifu

vygju

jcslu

xgenu

lkqpu

zocru

nsotu

cxbwv

qbnyv

efzav

sjlcv

gnxev

urjgv

wzhkv

kdtmv

yhfov

mlrqv

apdsv

otpuv

dycxw

rcozw

fgabw

tkmdw

hoyfw

vskhw

xailw

leunw

zigpw

nmsrw

bqetw

puqvw

ezdyx

sdpax

ghbcx

ulnex

ipzgx

wtlix

ybjmx

mfvox

ajhqx

ontsx

crfux

qvrwx

faezy

teqby

hicdy

vmofy

jqahy

xumjy

zckny

ngwpy

bkiry

pouty

dsgvy

rwsxy

gbfaz

ufrcz

ijdez

wnpgz

krbiz

yvnkz

adloz

ohxqz

cljsz

qpvuz

ethwz

sxtyz

hcgba

vgsda

jkefa

xoqha

lscja

zwola

bempa

piyra

dmkta

rqwva

fuixa

tyuza

idhcb

whteb

klfgb

yprib

mtdkb

axpmb

cfnqb

qjzsb

enlub

srxwb

gvjyb

uzvab

jeidc

xiufc

lmghc

zqsjc

nuelc

byqnc

dgorc

rkatc

fomvc

tsyxc

hwkzc

vawbc

kfjed

yjvgd

mnhid

artkd

ovfmd

czrod

ehpsd

slbud

gpnwd

utzyd

ixlad

wbxcd

lgkfe

zkwhe

noije

bsule

pwgne

daspe

fiqte

tmcve

hqoxe

vuaze

jymbe

xcyde

mhlgf

alxif

opjkf

ctvmf

qxhof

ebtqf

gjruf

undwf

irpyf

wvbaf

kzncf

ydzef

nimhg

bmyjg

pqklg

duwng

ryipg

fcurg

hksvg

voexg

jsqzg

xwcbg

laodg

zeafg

ojnih

cnzkh

qrlmh

evxoh

szjqh

gdvsh

iltwh

wpfyh

ktrah

yxdch

mbpeh

afbgh

pkoji

doali

rsmni

fwypi

takri

hewti

jmuxi

xqgzi

lusbi

zyedi

ncqfi

bgchi

qlpkj

epbmj

stnoj

gxzqj

ublsj

ifxuj

knvyj

yrhaj

mvtcj

azfej

odrgj

chdij

rmqlk

fqcnk

tuopk

hyark

vcmtk

jgyvk

lowzk

zsibk

nwudk

bagfk

peshk

diejk

snrml

grdol

uvpql

izbsl

wdnul

khzwl

mpxal

atjcl

oxvel

cbhgl

qftil

ejfkl

tosnm

hsepm

vwqrm

jactm

xeovm

liaxm

nqybm

bukdm

pywfm

dcihm

rgujm

fkglm

upton

itfqn

wxrsn

kbdun

yfpwn

mjbyn

orzcn

cvlen

qzxgn

edjin

shvkn

glhmn

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:	upton
Cipher:	hcgba

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:	upton
Cipher:	5453444333

Extended Methods:
Method #1

Plaintext: upton

method variations:
zuyts	ezdyx	keidc	pkoih

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

u p t o n 
5 5 4 4 3 
4 3 4 3 3

They are then read out in rows:
5544343433
Then divided up into pairs again, and the pairs turned back into letters using the square:

Plain:	upton
Cipher:	ztssn

Read more ...
Method #3

Plaintext: upton

method variations:
ystnx	stnxy	tnxys
nxyst	xystn

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: upton

all 120 cipher variations:

upton

uptno

upotn

upont

upnot

upnto

utpon

utpno

utopn

utonp

utnop

utnpo

uotpn

uotnp

uoptn

uopnt

uonpt

uontp

untop

untpo

unotp

unopt

unpot

unpto

puton

putno

puotn

puont

punot

punto

ptuon

ptuno

ptoun

ptonu

ptnou

ptnuo

potun

potnu

poutn

pount

ponut

pontu

pntou

pntuo

pnotu

pnout

pnuot

pnuto

tpuon

tpuno

tpoun

tponu

tpnou

tpnuo

tupon

tupno

tuopn

tuonp

tunop

tunpo

toupn

tounp

topun

topnu

tonpu

tonup

tnuop

tnupo

tnoup

tnopu

tnpou

tnpuo

optun

optnu

oputn

opunt

opnut

opntu

otpun

otpnu

otupn

otunp

otnup

otnpu

outpn

outnp

ouptn

oupnt

ounpt

ountp

ontup

ontpu

onutp

onupt

onput

onptu

nptou

nptuo

npotu

npout

npuot

nputo

ntpou

ntpuo

ntopu

ntoup

ntuop

ntupo

notpu

notup

noptu

noput

noupt

noutp

nutop

nutpo

nuotp

nuopt

nupot

nupto