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eucrie

outrivalling

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rederitque

vikki

betwee

exotropic

tostado

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outfigure

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intermingledom

unbedraggled

conflagrasse

disillusionizer

indicaverunt

jargonization

philliber


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: tessel
cipher variations:
ufttfm vguugn whvvho xiwwip yjxxjq
zkyykr alzzls bmaamt cnbbnu doccov
epddpw fqeeqx grffry hsggsz ithhta
juiiub kvjjvc lwkkwd mxllxe nymmyf
oznnzg paooah qbppbi rcqqcj sdrrdk

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.)
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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: tessel
Cipher: gvhhvo

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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: tessel
Cipher: BAABA AABAA BAAAB BAAAB AABAA ABABA

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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: tessel
cipher variations:
ufttfmgnddnisvnnveedxxdaqlhhlwctrrtsajlljkmrvvrg
yzffzckhpphywpzzpuixjjxqvguugnhoeeojtwoowffeyyeb
rmiimxdussutbkmmklnswwshzaggadliqqizxqaaqvjykkyr
whvvhoipffpkuxppxggfzzfcsnjjnyevttvuclnnlmotxxti
abhhbemjrrjayrbbrwkzllzsxiwwipjqggqlvyqqyhhgaagd
tokkozfwuuwvdmoomnpuyyujbciicfnksskbzsccsxlammat
yjxxjqkrhhrmwzrrziihbbheupllpagxvvxwenppnoqvzzvk
cdjjdgolttlcatddtymbnnbuzkyykrlsiisnxassajjiccif
vqmmqbhywwyxfoqqoprwaawldekkehpmuumdbueeuzncoocv
alzzlsmtjjtoybttbkkjddjgwrnnrcizxxzygprrpqsxbbxm
efllfiqnvvnecvffvaodppdwbmaamtnukkupzcuucllkeekh
xsoosdjayyazhqssqrtyccynfgmmgjrowwofdwggwbpeqqex
cnbbnuovllvqadvvdmmlffliytpptekbzzbairttrsuzddzo
ghnnhkspxxpgexhhxcqfrrfydoccovpwmmwrbewwennmggmj
zuqquflcaacbjsuustvaeeaphiooiltqyyqhfyiiydrgssgz
epddpwqxnnxscfxxfoonhhnkavrrvgmdbbdcktvvtuwbffbq
ijppjmurzzrigzjjzeshtthafqeeqxryooytdgyygppoiiol
bwsswhneccedluwwuvxcggcrjkqqknvsaasjhakkaftiuuib
grffryszppzuehzzhqqpjjpmcxttxiofddfemvxxvwydhhds
klrrlowtbbtkibllbgujvvjchsggsztaqqavfiaairrqkkqn
dyuuyjpgeegfnwyywxzeiietlmssmpxucculjcmmchvkwwkd
ithhtaubrrbwgjbbjssrllroezvvzkqhffhgoxzzxyafjjfu
mnttnqyvddvmkdnndiwlxxlejuiiubvcsscxhkcckttsmmsp
fawwalriggihpyaayzbgkkgvnouuorzweewnleooejxmyymf
kvjjvcwdttdyilddluutnntqgbxxbmsjhhjiqzbbzachllhw
opvvpsaxffxomfppfkynzznglwkkwdxeuuezjmeemvvuoour
hcyycntkiikjraccabdimmixpqwwqtbyggypngqqglzoaaoh
mxllxeyfvvfaknffnwwvppvsidzzdouljjlksbddbcejnnjy
qrxxruczhhzqohrrhmapbbpinymmyfzgwwgbloggoxxwqqwt
jeaaepvmkkmltceecdfkookzrsyysvdaiiarpissinbqccqj
oznnzgahxxhcmphhpyyxrrxukfbbfqwnllnmudffdeglppla
stzztwebjjbsqjttjocrddrkpaooahbiyyidnqiiqzzyssyv
lgccgrxommonveggefhmqqmbtuaauxfckkctrkuukpdseesl
qbppbicjzzjeorjjraazttzwmhddhsypnnpowfhhfginrrnc
uvbbvygdllduslvvlqetfftmrcqqcjdkaakfpskksbbauuax
nieeitzqooqpxgiighjossodvwccwzhemmevtmwwmrfuggun
sdrrdkelbblgqtlltccbvvbyojffjuarpprqyhjjhikpttpe
wxddxaifnnfwunxxnsgvhhvotesselfmccmhrummuddcwwcz
pkggkvbsqqsrzikkijlquuqfxyeeybjgoogxvoyyothwiiwp

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,

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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: tessel
Cipher: grffry

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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: tessel
Cipher: 445134345113

Extended Methods:
Method #1

Plaintext: tessel
method variations:
ykxxkqdpccpviuhhuaoznnzf

Method #2
Bifid cipher
The message is converted to its coordinates in the usual manner, but they are written vertically beneath:
t e s s e l 
4 5 3 3 5 1 
4 1 4 4 1 3 
They are then read out in rows:
453351414413
Then divided up into pairs again, and the pairs turned back into letters using the square:
Plain: tessel
Cipher: ynedtl

Read more ...
Method #3

Plaintext: tessel
method variations:
yloyas loyasy oyasyl
yasylo asyloy syloya

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: tessel

all 720 cipher variations:
tessel tessle tesesl tesels tesles teslse tessel tessle tesesl tesels tesles
teslse teessl teesls teessl teesls teelss teelss telses telsse teless teless
telses telsse tsesel tsesle tseesl tseels tseles tselse tsseel tssele tsseel
tssele tsslee tsslee tsesel tsesle tseesl tseels tseles tselse tslsee tslsee
tslese tslees tslees tslese tsseel tssele tsseel tssele tsslee tsslee tsesel
tsesle tseesl tseels tseles tselse tseesl tseels tsesel tsesle tselse tseles
tslees tslese tslees tslese tslsee tslsee tessel tessle tesesl tesels tesles
teslse tessel tessle tesesl tesels tesles teslse teessl teesls teessl teesls
teelss teelss telses telsse teless teless telses telsse tlssee tlssee tlsese
tlsees tlsees tlsese tlssee tlssee tlsese tlsees tlsees tlsese tlesse tleses
tlesse tleses tleess tleess tleses tlesse tleess tleess tleses tlesse etssel
etssle etsesl etsels etsles etslse etssel etssle etsesl etsels etsles etslse
etessl etesls etessl etesls etelss etelss etlses etlsse etless etless etlses
etlsse estsel estsle estesl estels estles estlse esstel esstle essetl esselt
esslet esslte esestl eseslt esetsl esetls eselts eselst eslset eslste eslest
eslets esltes esltse esstel esstle essetl esselt esslet esslte estsel estsle
estesl estels estles estlse esetsl esetls esestl eseslt eselst eselts esltes
esltse eslets eslest eslset eslste eesstl eesslt eestsl eestls eeslts eeslst
eesstl eesslt eestsl eestls eeslts eeslst eetssl eetsls eetssl eetsls eetlss
eetlss eelsts eelsst eeltss eeltss eelsts eelsst elsset elsste elsest elsets
elstes elstse elsset elsste elsest elsets elstes elstse elesst elests elesst
elests eletss eletss eltses eltsse eltess eltess eltses eltsse setsel setsle
setesl setels setles setlse sestel sestle sesetl seselt seslet seslte seestl
seeslt seetsl seetls seelts seelst selset selste selest selets seltes seltse
stesel stesle steesl steels steles stelse stseel stsele stseel stsele stslee
stslee stesel stesle steesl steels steles stelse stlsee stlsee stlese stlees
stlees stlese ssteel sstele ssteel sstele sstlee sstlee ssetel ssetle sseetl
sseelt sselet sselte sseetl sseelt ssetel ssetle sselte sselet ssleet sslete
ssleet sslete ssltee ssltee setsel setsle setesl setels setles setlse sestel
sestle sesetl seselt seslet seslte seestl seeslt seetsl seetls seelts seelst
selset selste selest selets seltes seltse sltsee sltsee sltese sltees sltees
sltese slstee slstee slsete slseet slseet slsete sleste sleset sletse sletes
sleets sleest sleset sleste sleest sleets sletes sletse sestel sestle sesetl
seselt seslet seslte setsel setsle setesl setels setles setlse seetsl seetls
seestl seeslt seelst seelts seltes seltse selets selest selset selste ssetel
ssetle sseetl sseelt sselet sselte ssteel sstele ssteel sstele sstlee sstlee
ssetel ssetle sseetl sseelt sselet sselte ssltee ssltee sslete ssleet ssleet
sslete stseel stsele stseel stsele stslee stslee stesel stesle steesl steels
steles stelse steesl steels stesel stesle stelse steles stlees stlese stlees
stlese stlsee stlsee sestel sestle sesetl seselt seslet seslte setsel setsle
setesl setels setles setlse seetsl seetls seestl seeslt seelst seelts seltes
seltse selets selest selset selste slstee slstee slsete slseet slseet slsete
sltsee sltsee sltese sltees sltees sltese sletse sletes sleste sleset sleest
sleets sletes sletse sleets sleest sleset sleste eesstl eesslt eestsl eestls
eeslts eeslst eesstl eesslt eestsl eestls eeslts eeslst eetssl eetsls eetssl
eetsls eetlss eetlss eelsts eelsst eeltss eeltss eelsts eelsst esestl eseslt
esetsl esetls eselts eselst essetl esselt esstel esstle esslte esslet estsel
estsle estesl estels estles estlse eslste eslset esltse esltes eslets eslest
essetl esselt esstel esstle esslte esslet esestl eseslt esetsl esetls eselts
eselst estesl estels estsel estsle estlse estles eslets eslest esltes esltse
eslste eslset etssel etssle etsesl etsels etsles etslse etssel etssle etsesl
etsels etsles etslse etessl etesls etessl etesls etelss etelss etlses etlsse
etless etless etlses etlsse elsste elsset elstse elstes elsets elsest elsste
elsset elstse elstes elsets elsest eltsse eltses eltsse eltses eltess eltess
elests elesst eletss eletss elests elesst lesset lesste lesest lesets lestes
lestse lesset lesste lesest lesets lestes lestse leesst leests leesst leests
leetss leetss letses letsse letess letess letses letsse lseset lseste lseest
lseets lsetes lsetse lsseet lssete lsseet lssete lsstee lsstee lseset lseste
lseest lseets lsetes lsetse lstsee lstsee lstese lstees lstees lstese lsseet
lssete lsseet lssete lsstee lsstee lseset lseste lseest lseets lsetes lsetse
lseest lseets lseset lseste lsetse lsetes lstees lstese lstees lstese lstsee
lstsee lesset lesste lesest lesets lestes lestse lesset lesste lesest lesets
lestes lestse leesst leests leesst leests leetss leetss letses letsse letess
letess letses letsse ltssee ltssee ltsese ltsees ltsees ltsese ltssee ltssee
ltsese ltsees ltsees ltsese ltesse lteses ltesse lteses lteess lteess lteses
ltesse lteess lteess lteses ltesse

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