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hamathite

hypnaceous

conferamini

overrigidity

colombians

undevotional

doodad

resetting

residetis

bamboozlers

unhorizoned

heltzel

feuerlein

tygre

jumbo

benavides

nicolai

ultraceremonious


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: bendee
cipher variations:
cfoeff dgpfgg ehqghh firhii gjsijj
hktjkk ilukll jmvlmm knwmnn loxnoo
mpyopp nqzpqq oraqrr psbrss qtcstt
rudtuu sveuvv twfvww uxgwxx vyhxyy
wziyzz xajzaa ybkabb zclbcc admcdd

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: bendee
Cipher: yvmwvv

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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: bendee
Cipher: AAAAB AABAA ABBAA AAABB AABAA AABAA

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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: bendee
cipher variations:
cfoeffenoknngvoqvvidowddklocllmtoittqjoujjsroarr
uzogzzwhomhhyposppaxoyxxdgpfggfoploohwprwwjepxee
lmpdmmnupjuurkpvkktspbssvaphaaxipniizqptqqbypzyy
ehqghhgpqmppixqsxxkfqyffmnqennovqkvvslqwllutqctt
wbqibbyjqojjarqurrczqazzfirhiihqrnqqjyrtyylgrzgg
norfoopwrlwwtmrxmmvurduuxcrjcczkrpkkbsrvssdarbaa
gjsijjirsorrkzsuzzmhsahhopsgppqxsmxxunsynnwvsevv
ydskddalsqllctswttebscbbhktjkkjstpsslatvaanitbii
pqthqqrytnyyvotzooxwtfwwzetleebmtrmmdutxuufctdcc
ilukllktuqttmbuwbbojucjjqruirrszuozzwpuappyxugxx
afumffcnusnnevuyvvgdueddjmvlmmluvruuncvxccpkvdkk
rsvjsstavpaaxqvbqqzyvhyybgvnggdovtoofwvzwwhevfee
knwmnnmvwsvvodwyddqlwellstwkttubwqbbyrwcrrazwizz
chwohhepwuppgxwaxxifwgffloxnoonwxtwwpexzeermxfmm
tuxluuvcxrcczsxdssbaxjaadixpiifqxvqqhyxbyyjgxhgg
mpyoppoxyuxxqfyaffsnygnnuvymvvwdysddatyettcbykbb
ejyqjjgrywrrizyczzkhyihhnqzpqqpyzvyyrgzbggtozhoo
vwznwwxezteebuzfuudczlccfkzrkkhszxssjazdaalizjii
oraqrrqzawzzshachhupaippwxaoxxyfauffcvagvvedamdd
glasllitayttkbaebbmjakjjpsbrssrabxaatibdiivqbjqq
xybpyyzgbvggdwbhwwfebneehmbtmmjubzuulcbfccnkblkk
qtcsttsbcybbujcejjwrckrryzcqzzahcwhhexcixxgfcoff
incunnkvcavvmdcgddolcmllrudtuutcdzccvkdfkkxsdlss
zadraabidxiifydjyyhgdpggjodvoolwdbwwnedheepmdnmm
sveuvvudeaddwlegllytemttabesbbcjeyjjgzekzziheqhh
kpewppmxecxxofeiffqneonntwfvwwvefbeexmfhmmzufnuu
bcftccdkfzkkhaflaajifriilqfxqqnyfdyypgfjggrofpoo
uxgwxxwfgcffynginnavgovvcdguddelgallibgmbbkjgsjj
mrgyrrozgezzqhgkhhspgqppvyhxyyxghdggzohjoobwhpww
dehveefmhbmmjchncclkhtkknshzsspahfaarihliitqhrqq
wziyzzyhiehhapikppcxiqxxefiwffgnicnnkdioddmliull
otiattqbigbbsjimjjurisrrxajzaazijfiibqjlqqdyjryy
fgjxgghojdoolejpeenmjvmmpujbuurcjhcctkjnkkvsjtss
ybkabbajkgjjcrkmrrezkszzghkyhhipkeppmfkqffonkwnn
qvkcvvsdkiddulkollwtkuttzclbccbklhkkdslnssfaltaa
hilziijqlfqqnglrggpolxoorwldwwteljeevmlpmmxulvuu
admcddclmilletmottgbmubbijmajjkrmgrrohmshhqpmypp
sxmexxufmkffwnmqnnyvmwvvbendeedmnjmmfunpuuhcnvcc
jknbkklsnhsspintiirqnzqqtynfyyvgnlggxonroozwnxww

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: bendee
Cipher: oraqrr

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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: bendee
Cipher: 215133415151

Extended Methods:
Method #1

Plaintext: bendee
method variations:
gksikkmpxoppructuuwzhyzz

Method #2
Bifid cipher
The message is converted to its coordinates in the usual manner, but they are written vertically beneath:
b e n d e e 
2 5 3 4 5 5 
1 1 3 1 1 1 
They are then read out in rows:
253455113111
Then divided up into pairs again, and the pairs turned back into letters using the square:
Plain: bendee
Cipher: wszaca

Read more ...
Method #3

Plaintext: bendee
method variations:
vlsvvf lsvvfv svvfvl
vvfvls vfvlsv fvlsvv

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: bendee

all 720 cipher variations:
bendee bendee benede beneed beneed benede bednee bednee bedene bedeen bedeen
bedene beedne beeden beende beened beeend beeedn beeden beedne beeedn beeend
beened beende bnedee bnedee bneede bneeed bneeed bneede bndeee bndeee bndeee
bndeee bndeee bndeee bnedee bnedee bneede bneeed bneeed bneede bnedee bnedee
bneede bneeed bneeed bneede bdneee bdneee bdneee bdneee bdneee bdneee bdenee
bdenee bdeene bdeeen bdeeen bdeene bdeene bdeeen bdenee bdenee bdeene bdeeen
bdeeen bdeene bdeeen bdeene bdenee bdenee bendee bendee benede beneed beneed
benede bednee bednee bedene bedeen bedeen bedene beedne beeden beende beened
beeend beeedn beeden beedne beeedn beeend beened beende bendee bendee benede
beneed beneed benede bednee bednee bedene bedeen bedeen bedene beedne beeden
beende beened beeend beeedn beeden beedne beeedn beeend beened beende ebndee
ebndee ebnede ebneed ebneed ebnede ebdnee ebdnee ebdene ebdeen ebdeen ebdene
ebedne ebeden ebende ebened ebeend ebeedn ebeden ebedne ebeedn ebeend ebened
ebende enbdee enbdee enbede enbeed enbeed enbede endbee endbee endebe endeeb
endeeb endebe enedbe enedeb enebde enebed eneebd eneedb enedeb enedbe eneedb
eneebd enebed enebde ednbee ednbee ednebe edneeb edneeb ednebe edbnee edbnee
edbene edbeen edbeen edbene edebne edeben edenbe edeneb edeenb edeebn edeben
edebne edeebn edeenb edeneb edenbe eendbe eendeb eenbde eenbed eenebd eenedb
eednbe eedneb eedbne eedben eedebn eedenb eebdne eebden eebnde eebned eebend
eebedn eeedbn eeednb eeebdn eeebnd eeenbd eeendb eendeb eendbe eenedb eenebd
eenbed eenbde eedneb eednbe eedenb eedebn eedben eedbne eeednb eeedbn eeendb
eeenbd eeebnd eeebdn eebden eebdne eebedn eebend eebned eebnde nebdee nebdee
nebede nebeed nebeed nebede nedbee nedbee nedebe nedeeb nedeeb nedebe needbe
needeb neebde neebed neeebd neeedb needeb needbe neeedb neeebd neebed neebde
nbedee nbedee nbeede nbeeed nbeeed nbeede nbdeee nbdeee nbdeee nbdeee nbdeee
nbdeee nbedee nbedee nbeede nbeeed nbeeed nbeede nbedee nbedee nbeede nbeeed
nbeeed nbeede ndbeee ndbeee ndbeee ndbeee ndbeee ndbeee ndebee ndebee ndeebe
ndeeeb ndeeeb ndeebe ndeebe ndeeeb ndebee ndebee ndeebe ndeeeb ndeeeb ndeebe
ndeeeb ndeebe ndebee ndebee nebdee nebdee nebede nebeed nebeed nebede nedbee
nedbee nedebe nedeeb nedeeb nedebe needbe needeb neebde neebed neeebd neeedb
needeb needbe neeedb neeebd neebed neebde nebdee nebdee nebede nebeed nebeed
nebede nedbee nedbee nedebe nedeeb nedeeb nedebe needbe needeb neebde neebed
neeebd neeedb needeb needbe neeedb neeebd neebed neebde denbee denbee denebe
deneeb deneeb denebe debnee debnee debene debeen debeen debene deebne deeben
deenbe deeneb deeenb deeebn deeben deebne deeebn deeenb deeneb deenbe dnebee
dnebee dneebe dneeeb dneeeb dneebe dnbeee dnbeee dnbeee dnbeee dnbeee dnbeee
dnebee dnebee dneebe dneeeb dneeeb dneebe dnebee dnebee dneebe dneeeb dneeeb
dneebe dbneee dbneee dbneee dbneee dbneee dbneee dbenee dbenee dbeene dbeeen
dbeeen dbeene dbeene dbeeen dbenee dbenee dbeene dbeeen dbeeen dbeene dbeeen
dbeene dbenee dbenee denbee denbee denebe deneeb deneeb denebe debnee debnee
debene debeen debeen debene deebne deeben deenbe deeneb deeenb deeebn deeben
deebne deeebn deeenb deeneb deenbe denbee denbee denebe deneeb deneeb denebe
debnee debnee debene debeen debeen debene deebne deeben deenbe deeneb deeenb
deeebn deeben deebne deeebn deeenb deeneb deenbe eendbe eendeb eenbde eenbed
eenebd eenedb eednbe eedneb eedbne eedben eedebn eedenb eebdne eebden eebnde
eebned eebend eebedn eeedbn eeednb eeebdn eeebnd eeenbd eeendb enedbe enedeb
enebde enebed eneebd eneedb endebe endeeb endbee endbee endebe endeeb enbdee
enbdee enbede enbeed enbeed enbede enedbe enedeb enebde enebed eneebd eneedb
ednebe edneeb ednbee ednbee ednebe edneeb edenbe edeneb edebne edeben edeebn
edeenb edbene edbeen edbnee edbnee edbene edbeen edeebn edeenb edeben edebne
edenbe edeneb ebndee ebndee ebnede ebneed ebneed ebnede ebdnee ebdnee ebdene
ebdeen ebdeen ebdene ebedne ebeden ebende ebened ebeend ebeedn ebeden ebedne
ebeedn ebeend ebened ebende eendbe eendeb eenbde eenbed eenebd eenedb eednbe
eedneb eedbne eedben eedebn eedenb eebdne eebden eebnde eebned eebend eebedn
eeedbn eeednb eeebdn eeebnd eeenbd eeendb eendeb eendbe eenedb eenebd eenbed
eenbde eedneb eednbe eedenb eedebn eedben eedbne eeednb eeedbn eeendb eeenbd
eeebnd eeebdn eebden eebdne eebedn eebend eebned eebnde enedeb enedbe eneedb
eneebd enebed enebde endeeb endebe endeeb endebe endbee endbee enedeb enedbe
eneedb eneebd enebed enebde enbdee enbdee enbede enbeed enbeed enbede edneeb
ednebe edneeb ednebe ednbee ednbee edeneb edenbe edeenb edeebn edeben edebne
edeenb edeebn edeneb edenbe edebne edeben edbeen edbene edbeen edbene edbnee
edbnee eendeb eendbe eenedb eenebd eenbed eenbde eedneb eednbe eedenb eedebn
eedben eedbne eeednb eeedbn eeendb eeenbd eeebnd eeebdn eebden eebdne eebedn
eebend eebned eebnde ebndee ebndee ebnede ebneed ebneed ebnede ebdnee ebdnee
ebdene ebdeen ebdeen ebdene ebedne ebeden ebende ebened ebeend ebeedn ebeden
ebedne ebeedn ebeend ebened ebende

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