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  • Computer Science
    Encoding: Cryptography
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        Data Encryption Standard - DES

        Please Note:
        • DES is a block cipher, and it uses the blocks of size 8 bytes. If the message length in bytes is not an exact multiple
          of 8, you must use the padding.
        • The length of the Key must be exactly 8 bytes. Extra bytes will not be used.
          If you specify it in the hexadecimal format, you must specify 16 hexadecimal digits.
        • If DES Mode requires using the Initialization Vector (CBC, CFB and OFB modes) it must be must 8 bytes long.
          If it is specified in the hexadecimal format, you must specify 16 hexadecimal digits.
        • If you specify the input (either the plaintext or the ciphertext) as a file that will be uploaded and then encrypted or decrypted,
          the resulting output will also be given as a file, which will be downloaded. Its name will be the name of the input file
          with added extension ".des" if the input file was encoded, or ".txt", if it was decoded.
        • Please be mindful that if, in some field, you switch from hexadecimal bytes representation into characters and then back into hexadecimal,
          the resulting bytes might not be the same as initial, if the inital ones were outside the ACII range.
          In that case the browser will perform the String characters encoding (UTF-8).
        Mode Padding
        Key:
        Initialization Vector:
        show as:
        Plaintext as :Ciphertext as:
        Triple DES (Data Encryption Standard)

        Please Note:
        • Triple DES is a block cipher, and it uses the blocks of size 8 bytes. If the message length in bytes is not an exact multiple
          of 8, you must use the padding.
        • The length of the Key must be exactly 8 bytes. Extra bytes will be not be used.
          Please specify it in the hexadecimal format (16 hexadecimal digits)
        • If DES Mode requires using the Initialization Vector (CBC, CFB and OFB modes) it must be must 8 bytes long and
          specified it in the hexadecimal format (16 hexadecimal digits)
        Mode Padding
        Key:
        Initialization Vector:
        show as:
        Plaintext as :Ciphertext as:
        Please select Cryptosystem you wish to try:
        Shift Cipher

        Let be the alphabet used, N = | | size of the alhabet. If K ≤ N is a shift key. Then

        e(x) = ( x + K ) mod Nis encoding function, and
        d(x) = ( x - K ) mod Nis decoding function, where x ∈


        Please Note:
        • None of the provided alphabets supports the Unicode character sets. Any character beyond the ASCII set will be removed.
        Please select the alphabet to be used:
        Upper case Latin Alphabet
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZ
        Ciphertext charactersVWXYZA
        Plaintext:Ciphertext:
        Lower case Latin Alphabet
        Shift characters by     K =
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersbcdefghijklmnopqrstu
        Plaintext charactersuvwxyz
        Ciphertext charactersvwxyza
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz
        Ciphertext characterspqrstuvwxyzA
        Plaintext:Ciphertext:
        Numbers Only Alphabet
        Shift characters by     K =
        Plaintext characters0123456789
        Ciphertext characters1234567890
        Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZ0123456789
        Ciphertext charactersVWXYZ0123456789A
        Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers
        Shift characters by     K =
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersbcdefghijklmnopqrstu
        Plaintext charactersuvwxyz0123456789
        Ciphertext charactersvwxyz0123456789a
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext characterspqrstuvwxyz012345678
        Plaintext characters89
        Ciphertext characters9A
        Plaintext:Ciphertext:
        Upper case Latin Alphabet and Space
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZ
        Ciphertext charactersVWXYZ A
        Plaintext:Ciphertext:
        Lower case Latin Alphabet and Space
        Shift characters by     K =
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersbcdefghijklmnopqrstu
        Plaintext charactersuvwxyz
        Ciphertext charactersvwxyz a
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet and Space
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz
        Ciphertext characterspqrstuvwxyz A
        Plaintext:Ciphertext:
        Numbers and Space Alphabet
        Shift characters by     K =
        Plaintext characters0123456789
        Ciphertext characters123456789 0
        Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers and Space
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZ0123456789
        Ciphertext charactersVWXYZ0123456789 A
        Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers and Space
        Shift characters by     K =
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersbcdefghijklmnopqrstu
        Plaintext charactersuvwxyz0123456789
        Ciphertext charactersvwxyz0123456789 a
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers and Space
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext characterspqrstuvwxyz012345678
        Plaintext characters89
        Ciphertext characters9 A
        Plaintext:Ciphertext:
        Printable ASCII characters
        Shift characters by     K =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext characterspqrstuvwxyz012345678
        Plaintext characters89 !"#$%&'()*+,-./:;
        Ciphertext characters9 !"#$%&'()*+,-./:;<
        Plaintext characters<=>?@[\]^_`{|}~
        Ciphertext characters=>?@[\]^_`{|}~A
        Plaintext:Ciphertext:
        Substitution Cipher

        Let be the alphabet used, N = | | size of the alhabet and πN a permutation of N elements. Then

           e(x) = πN(x)     is encoding function, and
           d(x) = πN-1(x)     is decoding function, where x ∈ , and πN-1 is the inverse permutation of the permutation πN.

        Please Note:
        • Alphabet is case sensitive.
        • None of the provided alphabets supports the Unicode character sets. Any character beyond the ASCII set will be removed.
        Please select the alphabet to be used:
        Upper case Latin Alphabet
        or Specify the permutation of alphabet characters:
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersXURLWOPNEJFYVIQZHMDC
        Plaintext charactersUVWXYZ
        Ciphertext charactersSTKGBA
        Plaintext:Ciphertext:
        Lower case Latin Alphabet
        or Specify the permutation of alphabet characters:
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext characterskcvufpjmbnhizywqrgxe
        Plaintext charactersuvwxyz
        Ciphertext charactersoadtsl
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet
        or Specify the permutation of alphabet characters:
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersqUKYgRosPOxwtQCFbhjz
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersuiVyEZNGMrvknSflIHWD
        Plaintext charactersopqrstuvwxyz
        Ciphertext charactersmTcBdXeJpaAL
        Plaintext:Ciphertext:
        Numbers Only Alphabet
        or Specify the permutation of alphabet characters:
        Plaintext characters0123456789
        Ciphertext characters1398072546
        Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers
        or Specify the permutation of alphabet characters:
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersF1LMQ7ZJ2I6EVNRKBUW8
        Plaintext charactersUVWXYZ0123456789
        Ciphertext characters4A09PXSTO3YGDH5C
        Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers
        or Specify the permutation of alphabet characters:
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersgok4zaw9c07ybmplu3ns
        Plaintext charactersuvwxyz0123456789
        Ciphertext characters8x156tjrdiqvfh2e
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers
        or Specify the permutation of alphabet characters:
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersbHw9WKCdPkNF4I3rx6Ly
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersgVEosGmDJBZ7MtcTlaYf
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext charactersiOQzqpueAXR125Shjv0n
        Plaintext characters89
        Ciphertext characters8U
        Plaintext:Ciphertext:
        Upper case Latin Alphabet and Space
        or Specify the permutation of alphabet characters:
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersTVCYOHJNZXQSGFME DBP
        Plaintext charactersUVWXYZ
        Ciphertext charactersIWRKUAL
        Plaintext:Ciphertext:
        Lower case Latin Alphabet and Space
        or Specify the permutation of alphabet characters:
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersgtvaze huscfnkqyilrd
        Plaintext charactersuvwxyz
        Ciphertext charactersxbjpwom
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet and Space
        or Specify the permutation of alphabet characters:
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersWEdHJgyhcIGxOmBploKe
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersXVfAkbRZtjLuCPsTzwNv
        Plaintext charactersopqrstuvwxyz
        Ciphertext charactersnFrMqDQiYU aS
        Plaintext:Ciphertext:
        Numbers and Space Alphabet
        or Specify the permutation of alphabet characters:
        Plaintext characters0123456789
        Ciphertext characters468512730 9
        Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers and Space
        or Specify the permutation of alphabet characters:
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersWIJL59VE6YUXQCB80GTN
        Plaintext charactersUVWXYZ0123456789
        Ciphertext charactersK17MS4FO3R2ZP DHA
        Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers and Space
        or Specify the permutation of alphabet characters:
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext characters8li7t0xy2 9f5rzko3cv
        Plaintext charactersuvwxyz0123456789
        Ciphertext characters1p6dngubjehs4qawm
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers and Space
        or Specify the permutation of alphabet characters:
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersWeg7t4An6CYEZiaK0XHF
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactershSwByORJTrxN8mkUGVMD
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext charactersIuLv2Q9l1pz5jocPsb 3
        Plaintext characters89
        Ciphertext charactersfdq
        Plaintext:Ciphertext:
        Printable ASCII characters
        or Specify the permutation of alphabet characters:-H0Xc|kv8$^N{A%9[bIo2J(:rmRsW]f" CLASS="perm_in" AUTOCOMPLETE='off' />
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext characters@PpM?nFaLu_`ZY!gzS'E
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext characters3V/d5D+jex"#&} <*6)q
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext characters;h.U74CTQ=OtwliG~yB,
        Plaintext characters89 !"#$%&'()*+,-./:;
        Ciphertext characters1K\>-H0Xc|kv8$^N{A%9
        Plaintext characters<=>?@[\]^_`{|}~
        Ciphertext characters[bIo2J(:rmRsW]f
        Plaintext:Ciphertext:
        Afine Cipher

        Let be the alphabet used, N = | | size of the alhabet. If A and B are two integers such that GCD(A, N) = 1. Then

        e(x) = ( A⋅x + B ) mod Nis encoding function, and
        d(x) = (( x - B ) / A ) mod Nis decoding function, where x ∈


        Please Note:
        • In order for Afine cipher to have unambiguous encoding and decoding (properly defined), A and N must be relatively prime (coprime, ), that is GCD(A, N) = 1
        • Without the loss of generality, we can restrict A and B to 1 ≤ A < N and 0 ≤ B < N.
        • None of the provided alphabets supports the Unicode character sets. Any character beyond the ASCII set will be removed.
        Please select the alphabet to be used:
        Upper case Latin Alphabet
        Alphabet size N = 26Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZ
        Ciphertext charactersVWXYZA
        Plaintext:Ciphertext:
        Lower case Latin Alphabet
        Alphabet size N = 26Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersbcdefghijklmnopqrstu
        Plaintext charactersuvwxyz
        Ciphertext charactersvwxyza
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet
        Alphabet size N = 52Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz
        Ciphertext characterspqrstuvwxyzA
        Plaintext:Ciphertext:
        Numbers Only Alphabet
        Alphabet size N = 10Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext characters0123456789
        Ciphertext characters1234567890
        Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers
        Alphabet size N = 36Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZ0123456789
        Ciphertext charactersVWXYZ0123456789A
        Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers
        Alphabet size N = 36Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersbcdefghijklmnopqrstu
        Plaintext charactersuvwxyz0123456789
        Ciphertext charactersvwxyz0123456789a
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers
        Alphabet size N = 62Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext characterspqrstuvwxyz012345678
        Plaintext characters89
        Ciphertext characters9A
        Plaintext:Ciphertext:
        Upper case Latin Alphabet and Space
        Alphabet size N = 27Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZ
        Ciphertext charactersVWXYZ A
        Plaintext:Ciphertext:
        Lower case Latin Alphabet and Space
        Alphabet size N = 27Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersbcdefghijklmnopqrstu
        Plaintext charactersuvwxyz
        Ciphertext charactersvwxyz a
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet and Space
        Alphabet size N = 53Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz
        Ciphertext characterspqrstuvwxyz A
        Plaintext:Ciphertext:
        Numbers and Space Alphabet
        Alphabet size N = 11Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext characters0123456789
        Ciphertext characters123456789 0
        Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers and Space
        Alphabet size N = 37Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZ0123456789
        Ciphertext charactersVWXYZ0123456789 A
        Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers and Space
        Alphabet size N = 37Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersabcdefghijklmnopqrst
        Ciphertext charactersbcdefghijklmnopqrstu
        Plaintext charactersuvwxyz0123456789
        Ciphertext charactersvwxyz0123456789 a
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers and Space
        Alphabet size N = 63Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext characterspqrstuvwxyz012345678
        Plaintext characters89
        Ciphertext characters9 A
        Plaintext:Ciphertext:
        Printable ASCII characters
        Alphabet size N = 95Afine parameter A = Not a coprime with the alphabet size
        Afine parameter B =
        Plaintext charactersABCDEFGHIJKLMNOPQRST
        Ciphertext charactersBCDEFGHIJKLMNOPQRSTU
        Plaintext charactersUVWXYZabcdefghijklmn
        Ciphertext charactersVWXYZabcdefghijklmno
        Plaintext charactersopqrstuvwxyz01234567
        Ciphertext characterspqrstuvwxyz012345678
        Plaintext characters89 !"#$%&'()*+,-./:;
        Ciphertext characters9 !"#$%&'()*+,-./:;<
        Plaintext characters<=>?@[\]^_`{|}~
        Ciphertext characters=>?@[\]^_`{|}~A
        Plaintext:Ciphertext:
        Vigenère Cipher

        Let be the alphabet used, N = | | size of the alhabet and K = ( k1, k2, ... , km ) a key word of length m with characters from .
        Then, the input text will be split into blocks of m characters, and then each block will be ecnoded or decoded using the following:

        e(x1, x2, ... , xm) = ( (x1+p(k1)) mod N, (x2+p(k2)) mod N, ... , (xm+p(km)) mod N)is encoding function, and
        d(x1, x2, ... , xm) = ( (x1-p(k1)) mod N, (x2-p(k2)) mod N, ... , (xm-p(km)) mod N)is decoding function, where x ∈ and
        p(x) is a position of a character x in the alphabet.


        Please Note:
        • Alphabet is case sensitive.
        • None of the provided alphabets supports the Unicode character sets. Any character beyond the ASCII set will be removed.
        Please select the alphabet to be used:
        Upper case Latin Alphabet
        Alphabet size N = 26Key word:

        K = Plaintext:Ciphertext:
        Lower case Latin Alphabet
        Alphabet size N = 26Key word:

        K = Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet
        Alphabet size N = 52Key word:

        K = Plaintext:Ciphertext:
        Numbers Only Alphabet
        Alphabet size N = 10Key word:

        K = Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers
        Alphabet size N = 36Key word:

        K = Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers
        Alphabet size N = 36Key word:

        K = Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers
        Alphabet size N = 62Key word:

        K = Plaintext:Ciphertext:
        Upper case Latin Alphabet and Space
        Alphabet size N = 27Key word:

        K = Plaintext:Ciphertext:
        Lower case Latin Alphabet and Space
        Alphabet size N = 27Key word:

        K = Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet and Space
        Alphabet size N = 53Key word:

        K = Plaintext:Ciphertext:
        Numbers and Space Alphabet
        Alphabet size N = 11Key word:

        K = Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers and Space
        Alphabet size N = 37Key word:

        K = Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers and Space
        Alphabet size N = 37Key word:

        K = Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers and Space
        Alphabet size N = 63Key word:

        K = Plaintext:Ciphertext:
        Printable ASCII characters
        Alphabet size N = 95Key word:

        K = ?@[\]^_`{|}~' />Plaintext:Ciphertext:
        Hill Cipher

        Let be the alphabet used, N = | | size of the alhabet. Let m be a positive integer and K a m⨯m inversible square matrix of integers from ℤN.
        Then, the input text will be split into blocks of m characters x=(x1, x2, ... , xm) and each block will be treated as a vector from ℤNm.
        Encoding (or decoding) will be done by using the matrix K (or its inverse K-1) as a linear transformation of the input block vectors x in the following way:

        e(x) = x ⨯ K mod N (all arythmetics is done in ℤN)is encoding function, and
        d(x) = x ⨯ K-1 mod N (all arythmetics is done in ℤN)is decoding function

        Here x = (p(x1), p(x2), ... , p(xm) ) , where x1 ∈ and p(xi) is the position of the character xi in

        Please Note:
        • In order for Hill cipher to have a decoding function, the encoding transformation matrix K must have an inverse K-1
        • Without the loss of generality, we can restrict elements from K to ℤN.
        • None of the provided alphabets supports the Unicode character sets. Any character beyond the ASCII set will be removed.
        Please select the alphabet to be used:
        Upper case Latin Alphabet
        Alphabet size N = 26Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Lower case Latin Alphabet
        Alphabet size N = 26Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet
        Alphabet size N = 52Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Numbers Only Alphabet
        Alphabet size N = 10Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers
        Alphabet size N = 36Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers
        Alphabet size N = 36Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers
        Alphabet size N = 62Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Upper case Latin Alphabet and Space
        Alphabet size N = 27Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Lower case Latin Alphabet and Space
        Alphabet size N = 27Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet and Space
        Alphabet size N = 53Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Numbers and Space Alphabet
        Alphabet size N = 11Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Upper case Latin Alphabet with Numbers and Space
        Alphabet size N = 37Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Lower case Latin Alphabet with Numbers and Space
        Alphabet size N = 37Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Upper and Lower case Latin Alphabet with Numbers and Space
        Alphabet size N = 63Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext:
        Printable ASCII characters
        Alphabet size N = 95Key matrix dimension (cipher block size):m = Key matrix :K =
        Plaintext:Ciphertext: