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unresounding

yukkei

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workwomen

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volkie

honeymoony

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brijbhumi


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: wising
cipher variations:
xjtjoh ykukpi zlvlqj amwmrk bnxnsl
coyotm dpzpun eqaqvo frbrwp gscsxq
htdtyr iueuzs jvfvat kwgwbu lxhxcv
myiydw nzjzex oakafy pblbgz qcmcha
rdndib seoejc tfpfkd ugqgle vhrhmf

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: wising
Cipher: drhrmt

Read more ...

 

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: wising
Cipher: BABAA ABAAA BAAAB ABAAA ABBAA AABBA

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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: wising
cipher variations:
xjtjohpzdzothpnpofzfxforrvhvodjlrloptrlronlhvhoz
dxfxolvnpnoxndzdojftjtovykukpiqaeapuiqoqpgagygps
swiwpekmsmpqusmspomiwipaeygypmwoqopyoeaepkgukupw
zlvlqjrbfbqvjrprqhbhzhqttxjxqflntnqrvtntqpnjxjqb
fzhzqnxprpqzpfbfqlhvlvqxamwmrkscgcrwksqsriciairu
uykyrgmouorswuourqokykrcgaiaroyqsqraqgcgrmiwmwry
bnxnsltdhdsxltrtsjdjbjsvvzlzshnpvpstxvpvsrplzlsd
hbjbspzrtrsbrhdhsnjxnxszcoyotmueietymusutkekcktw
wamatioqwqtuywqwtsqmamteickctqasustcsieitokyoyta
dpzpunvfjfuznvtvulfldluxxbnbujprxruvzxrxutrnbnuf
jdldurbtvtudtjfjuplzpzubeqaqvowgkgvaowuwvmgmemvy
ycocvkqsysvwaysyvusocovgkemevscuwuveukgkvqmaqavc
frbrwpxhlhwbpxvxwnhnfnwzzdpdwlrtztwxbztzwvtpdpwh
lfnfwtdvxvwfvlhlwrnbrbwdgscsxqyimixcqywyxoiogoxa
aeqexmsuauxycauaxwuqeqximgogxuewywxgwmimxsocscxe
htdtyrzjnjydrzxzypjphpybbfrfyntvbvyzdbvbyxvrfryj
nhphyvfxzxyhxnjnytpdtdyfiueuzsakokzesayazqkqiqzc
cgsgzouwcwzaecwczywsgszkoiqizwgyayziyokozuqeuezg
jvfvatblplaftbzbarlrjraddhthapvxdxabfdxdazxthtal
pjrjaxhzbzajzplpavrfvfahkwgwbucmqmbgucacbsmsksbe
eiuibqwyeybcgeyebayuiubmqkskbyiacabkaqmqbwsgwgbi
lxhxcvdnrnchvdbdctntltcffjvjcrxzfzcdhfzfcbzvjvcn
rltlczjbdbclbrnrcxthxhcjmyiydweosodiweceduoumudg
gkwkdsyagadeigagdcawkwdosmumdakcecdmcsosdyuiyidk
nzjzexfptpejxfdfevpvnvehhlxletzbhbefjhbhedbxlxep
tnvnebldfdendtptezvjzjeloakafygquqfkygegfwqwowfi
imymfuacicfgkicifecymyfquowofcmegefoeuqufawkakfm
pblbgzhrvrglzhfhgxrxpxgjjnzngvbdjdghljdjgfdznzgr
vpxpgdnfhfgpfvrvgbxlblgnqcmchaiswshmaigihysyqyhk
koaohwcekehimkekhgeaoahswqyqheogighqgwswhcymcmho
rdndibjtxtinbjhjiztzrzillpbpixdflfijnlflihfbpbit
xrzrifphjhirhxtxidzndnipseoejckuyujockikjauasajm
mqcqjyegmgjkomgmjigcqcjuysasjgqikijsiyuyjeaoeojq
tfpfkdlvzvkpdljlkbvbtbknnrdrkzfhnhklpnhnkjhdrdkv
ztbtkhrjljktjzvzkfbpfpkrugqglemwawlqemkmlcwcuclo
oseslagioilmqoiolkieselwauculiskmklukawalgcqgqls
vhrhmfnxbxmrfnlnmdxdvdmpptftmbhjpjmnrpjpmljftfmx
bvdvmjtlnlmvlbxbmhdrhrmtwisingoycynsgomoneyewenq
quguncikqknosqkqnmkgugnycwewnkumomnwmcycniesisnu

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,

Read more ...

 

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: wising
Cipher: jvfvat

Read more ...

 

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: wising
Cipher: 254234423322

Extended Methods:
Method #1

Plaintext: wising
method variations:
boxosmgtctxrmyhycwrdndhb

Method #2
Bifid cipher
The message is converted to its coordinates in the usual manner, but they are written vertically beneath:
w i s i n g 
2 4 3 4 3 2 
5 2 4 2 3 2 
They are then read out in rows:
243432524232
Then divided up into pairs again, and the pairs turned back into letters using the square:
Plain: wising
Cipher: rshkih

Read more ...
Method #3

Plaintext: wising
method variations:
umtmhg mtmhgu tmhgum
mhgumt hgumtm gumtmh

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: wising

all 720 cipher variations:
wising wisign wisnig wisngi wisgni wisgin wiisng wiisgn wiinsg wiings wiigns
wiigsn winisg winigs winsig winsgi wingsi wingis wigins wigisn wignis wignsi
wigsni wigsin wsiing wsiign wsinig wsingi wsigni wsigin wsiing wsiign wsinig
wsingi wsigni wsigin wsniig wsnigi wsniig wsnigi wsngii wsngii wsgini wsgiin
wsgnii wsgnii wsgini wsgiin wising wisign wisnig wisngi wisgni wisgin wiisng
wiisgn wiinsg wiings wiigns wiigsn winisg winigs winsig winsgi wingsi wingis
wigins wigisn wignis wignsi wigsni wigsin wnsiig wnsigi wnsiig wnsigi wnsgii
wnsgii wnisig wnisgi wniisg wniigs wnigis wnigsi wniisg wniigs wnisig wnisgi
wnigsi wnigis wngiis wngisi wngiis wngisi wngsii wngsii wgsini wgsiin wgsnii
wgsnii wgsini wgsiin wgisni wgisin wginsi wginis wgiins wgiisn wgnisi wgniis
wgnsii wgnsii wgnisi wgniis wgiins wgiisn wginis wginsi wgisni wgisin iwsing
iwsign iwsnig iwsngi iwsgni iwsgin iwisng iwisgn iwinsg iwings iwigns iwigsn
iwnisg iwnigs iwnsig iwnsgi iwngsi iwngis iwgins iwgisn iwgnis iwgnsi iwgsni
iwgsin iswing iswign iswnig iswngi iswgni iswgin isiwng isiwgn isinwg isingw
isignw isigwn isniwg isnigw isnwig isnwgi isngwi isngiw isginw isgiwn isgniw
isgnwi isgwni isgwin iiswng iiswgn iisnwg iisngw iisgnw iisgwn iiwsng iiwsgn
iiwnsg iiwngs iiwgns iiwgsn iinwsg iinwgs iinswg iinsgw iingsw iingws iigwns
iigwsn iignws iignsw iigsnw iigswn insiwg insigw inswig inswgi insgwi insgiw
iniswg inisgw iniwsg iniwgs inigws inigsw inwisg inwigs inwsig inwsgi inwgsi
inwgis ingiws ingisw ingwis ingwsi ingswi ingsiw igsinw igsiwn igsniw igsnwi
igswni igswin igisnw igiswn iginsw iginws igiwns igiwsn ignisw igniws ignsiw
ignswi ignwsi ignwis igwins igwisn igwnis igwnsi igwsni igwsin siwing siwign
siwnig siwngi siwgni siwgin siiwng siiwgn siinwg siingw siignw siigwn siniwg
sinigw sinwig sinwgi singwi singiw siginw sigiwn signiw signwi sigwni sigwin
swiing swiign swinig swingi swigni swigin swiing swiign swinig swingi swigni
swigin swniig swnigi swniig swnigi swngii swngii swgini swgiin swgnii swgnii
swgini swgiin siwing siwign siwnig siwngi siwgni siwgin siiwng siiwgn siinwg
siingw siignw siigwn siniwg sinigw sinwig sinwgi singwi singiw siginw sigiwn
signiw signwi sigwni sigwin snwiig snwigi snwiig snwigi snwgii snwgii sniwig
sniwgi sniiwg sniigw snigiw snigwi sniiwg sniigw sniwig sniwgi snigwi snigiw
sngiiw sngiwi sngiiw sngiwi sngwii sngwii sgwini sgwiin sgwnii sgwnii sgwini
sgwiin sgiwni sgiwin sginwi sginiw sgiinw sgiiwn sgniwi sgniiw sgnwii sgnwii
sgniwi sgniiw sgiinw sgiiwn sginiw sginwi sgiwni sgiwin iiswng iiswgn iisnwg
iisngw iisgnw iisgwn iiwsng iiwsgn iiwnsg iiwngs iiwgns iiwgsn iinwsg iinwgs
iinswg iinsgw iingsw iingws iigwns iigwsn iignws iignsw iigsnw iigswn isiwng
isiwgn isinwg isingw isignw isigwn iswing iswign iswnig iswngi iswgni iswgin
isnwig isnwgi isniwg isnigw isngiw isngwi isgwni isgwin isgnwi isgniw isginw
isgiwn iwsing iwsign iwsnig iwsngi iwsgni iwsgin iwisng iwisgn iwinsg iwings
iwigns iwigsn iwnisg iwnigs iwnsig iwnsgi iwngsi iwngis iwgins iwgisn iwgnis
iwgnsi iwgsni iwgsin inswig inswgi insiwg insigw insgiw insgwi inwsig inwsgi
inwisg inwigs inwgis inwgsi iniwsg iniwgs iniswg inisgw inigsw inigws ingwis
ingwsi ingiws ingisw ingsiw ingswi igswni igswin igsnwi igsniw igsinw igsiwn
igwsni igwsin igwnsi igwnis igwins igwisn ignwsi ignwis ignswi ignsiw ignisw
igniws igiwns igiwsn iginws iginsw igisnw igiswn nisiwg nisigw niswig niswgi
nisgwi nisgiw niiswg niisgw niiwsg niiwgs niigws niigsw niwisg niwigs niwsig
niwsgi niwgsi niwgis nigiws nigisw nigwis nigwsi nigswi nigsiw nsiiwg nsiigw
nsiwig nsiwgi nsigwi nsigiw nsiiwg nsiigw nsiwig nsiwgi nsigwi nsigiw nswiig
nswigi nswiig nswigi nswgii nswgii nsgiwi nsgiiw nsgwii nsgwii nsgiwi nsgiiw
nisiwg nisigw niswig niswgi nisgwi nisgiw niiswg niisgw niiwsg niiwgs niigws
niigsw niwisg niwigs niwsig niwsgi niwgsi niwgis nigiws nigisw nigwis nigwsi
nigswi nigsiw nwsiig nwsigi nwsiig nwsigi nwsgii nwsgii nwisig nwisgi nwiisg
nwiigs nwigis nwigsi nwiisg nwiigs nwisig nwisgi nwigsi nwigis nwgiis nwgisi
nwgiis nwgisi nwgsii nwgsii ngsiwi ngsiiw ngswii ngswii ngsiwi ngsiiw ngiswi
ngisiw ngiwsi ngiwis ngiiws ngiisw ngwisi ngwiis ngwsii ngwsii ngwisi ngwiis
ngiiws ngiisw ngiwis ngiwsi ngiswi ngisiw gisinw gisiwn gisniw gisnwi giswni
giswin giisnw giiswn giinsw giinws giiwns giiwsn ginisw giniws ginsiw ginswi
ginwsi ginwis giwins giwisn giwnis giwnsi giwsni giwsin gsiinw gsiiwn gsiniw
gsinwi gsiwni gsiwin gsiinw gsiiwn gsiniw gsinwi gsiwni gsiwin gsniiw gsniwi
gsniiw gsniwi gsnwii gsnwii gswini gswiin gswnii gswnii gswini gswiin gisinw
gisiwn gisniw gisnwi giswni giswin giisnw giiswn giinsw giinws giiwns giiwsn
ginisw giniws ginsiw ginswi ginwsi ginwis giwins giwisn giwnis giwnsi giwsni
giwsin gnsiiw gnsiwi gnsiiw gnsiwi gnswii gnswii gnisiw gniswi gniisw gniiws
gniwis gniwsi gniisw gniiws gnisiw gniswi gniwsi gniwis gnwiis gnwisi gnwiis
gnwisi gnwsii gnwsii gwsini gwsiin gwsnii gwsnii gwsini gwsiin gwisni gwisin
gwinsi gwinis gwiins gwiisn gwnisi gwniis gwnsii gwnsii gwnisi gwniis gwiins
gwiisn gwinis gwinsi gwisni gwisin

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