Computer Science
Encoding: Cryptography
Data Encryption Standard - DES
Please Note:
Mode
Padding
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).
Key:
Initialization Vector:
show as:
Plaintext as :Ciphertext as:
Triple DES (Data Encryption Standard)
Please Note:
Mode
Padding
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)
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
Please Note:
Please select the alphabet to be used:
Let be the alphabet used, N = | | size of the alhabet. If K ≤ N is a shift key. Then
| e(x) = ( x + K ) mod N | is encoding function, and | |
| d(x) = ( x - K ) mod N | is 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.
Upper case Latin Alphabet
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | ||||||||||||||
| Ciphertext characters | V | W | X | Y | Z | A |
Lower case Latin Alphabet
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u |
| Plaintext characters | u | v | w | x | y | z | ||||||||||||||
| Ciphertext characters | v | w | x | y | z | a |
Upper and Lower case Latin Alphabet
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | ||||||||
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | A |
Numbers Only Alphabet
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Ciphertext characters | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |
Upper case Latin Alphabet with Numbers
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A |
Lower case Latin Alphabet with Numbers
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u |
| Plaintext characters | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a |
Upper and Lower case Latin Alphabet with Numbers
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Plaintext characters | 8 | 9 | ||||||||||||||||||
| Ciphertext characters | 9 | A |
Upper case Latin Alphabet and Space
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | ||||||||||||||
| Ciphertext characters | V | W | X | Y | Z | A |
Lower case Latin Alphabet and Space
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u |
| Plaintext characters | u | v | w | x | y | z | ||||||||||||||
| Ciphertext characters | v | w | x | y | z | a |
Upper and Lower case Latin Alphabet and Space
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | ||||||||
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | A |
Numbers and Space Alphabet
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| Ciphertext characters | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |
Upper case Latin Alphabet with Numbers and Space
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A |
Lower case Latin Alphabet with Numbers and Space
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u |
| Plaintext characters | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a |
Upper and Lower case Latin Alphabet with Numbers and Space
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Plaintext characters | 8 | 9 | ||||||||||||||||||
| Ciphertext characters | 9 | A |
Printable ASCII characters
Shift characters by K =
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Plaintext characters | 8 | 9 | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / | : | ; | |
| Ciphertext characters | 9 | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / | : | ; | < | |
| Plaintext characters | < | = | > | ? | @ | [ | \ | ] | ^ | _ | ` | { | | | } | ~ | |||||
| Ciphertext characters | = | > | ? | @ | [ | \ | ] | ^ | _ | ` | { | | | } | ~ | A |
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:
Please select the alphabet to be used:
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.
Upper case Latin Alphabet
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | Y | Z | S | M | G | K | U | V | N | J | P | I | D | O | H | X | E | Q | R |
| Plaintext characters | U | V | W | X | Y | Z | ||||||||||||||
| Ciphertext characters | T | C | L | F | A | W |
Lower case Latin Alphabet
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | g | r | h | p | l | v | f | d | z | o | j | m | e | y | a | i | k | b | c | q |
| Plaintext characters | u | v | w | x | y | z | ||||||||||||||
| Ciphertext characters | w | s | t | u | x | n |
Upper and Lower case Latin Alphabet
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | u | E | e | t | b | H | l | B | z | R | G | Z | p | c | W | y | d | M | g | O |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | n | D | r | w | v | h | T | X | V | k | Q | q | s | P | f | I | Y | N | K | i |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | ||||||||
| Ciphertext characters | J | L | x | F | j | S | A | C | U | m | a | o |
Numbers Only Alphabet
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Ciphertext characters | 1 | 8 | 3 | 6 | 2 | 9 | 5 | 0 | 4 | 7 |
Upper case Latin Alphabet with Numbers
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | Z | Y | G | 5 | C | T | A | 6 | J | 7 | P | H | W | 9 | X | 3 | E | 1 | F | U |
| Plaintext characters | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | D | V | L | B | M | 0 | 8 | K | N | Q | 2 | R | 4 | S | I | O |
Lower case Latin Alphabet with Numbers
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | 4 | y | j | v | u | 3 | t | k | d | o | l | 9 | 1 | b | m | 8 | p | 2 | i | r |
| Plaintext characters | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | 7 | n | 5 | z | a | 6 | e | f | s | h | c | q | w | x | g | 0 |
Upper and Lower case Latin Alphabet with Numbers
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | r | J | a | 7 | m | 1 | B | I | Y | W | F | j | d | 5 | q | b | P | h | p | A |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | O | 9 | D | S | M | s | U | 4 | x | k | y | 8 | T | w | o | 2 | v | f | H | z |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | t | X | i | 6 | C | V | 0 | R | n | u | N | g | e | Q | G | E | K | l | L | c |
| Plaintext characters | 8 | 9 | ||||||||||||||||||
| Ciphertext characters | Z | 3 |
Upper case Latin Alphabet and Space
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | E | Y | B | R | F | D | J | O | Z | H | W | U | I | S | C | P | X | A | K | |
| Plaintext characters | U | V | W | X | Y | Z | ||||||||||||||
| Ciphertext characters | L | T | M | G | N | Q | V |
Lower case Latin Alphabet and Space
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | a | f | x | v | m | p | s | g | k | y | h | o | u | r | t | e | z | j | c | |
| Plaintext characters | u | v | w | x | y | z | ||||||||||||||
| Ciphertext characters | n | q | d | w | b | l | i |
Upper and Lower case Latin Alphabet and Space
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | J | q | i | h | e | F | S | Y | G | z | c | b | V | E | r | w | g | s | o | y |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | A | l | U | m | M | a | t | H | j | d | T | Q | k | v | D | R | C | n | u | |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | ||||||||
| Ciphertext characters | O | P | X | B | x | L | Z | p | I | N | W | K | f |
Numbers and Space Alphabet
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| Ciphertext characters | 7 | 0 | 8 | 4 | 2 | 6 | 3 | 9 | 1 | 5 |
Upper case Latin Alphabet with Numbers and Space
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | Y | S | A | U | J | 8 | E | 5 | 3 | F | D | L | G | O | Z | 6 | 1 | 0 | I | |
| Plaintext characters | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | P | 7 | K | T | N | V | M | R | 9 | H | W | B | C | Q | X | 2 | 4 |
Lower case Latin Alphabet with Numbers and Space
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | f | 1 | m | s | 4 | c | 9 | 5 | d | j | 2 | h | x | e | p | 7 | n | o | v | 0 |
| Plaintext characters | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | u | 3 | k | q | 6 | z | b | 8 | a | t | g | w | l | i | r | y |
Upper and Lower case Latin Alphabet with Numbers and Space
or Specify the permutation of alphabet characters:
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | y | Y | I | h | X | o | a | C | 7 | T | n | m | 1 | 6 | g | S | 9 | J | i | x |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | b | z | F | W | d | L | 3 | O | V | s | q | D | 4 | u | N | f | A | v | Z | M |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | G | Q | H | B | K | k | p | r | 0 | 5 | U | R | c | 2 | e | w | l | E | P | |
| Plaintext characters | 8 | 9 | ||||||||||||||||||
| Ciphertext characters | 8 | t | j |
Printable ASCII characters
or Specify the permutation of alphabet characters:szc2G}@a3+nN
Plaintext:Ciphertext:
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | m | B | [ | 1 | 8 | ) | V | j | E | T | Q | ? | 4 | S | ] | " | M | # | d | I |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | H | v | ~ | ( | & | k | % | b | o | ` | q | | | f | Z | y | R | U | w | Y | |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | : | { | D | O | ^ | C | u | e | h | , | 9 | P | = | ! | * | K | l | g | J | A |
| Plaintext characters | 8 | 9 | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / | : | ; | |
| Ciphertext characters | ; | - | X | > | s | z | c | 2 | G | } | @ | a | 3 | + | n | N | < | t | _ | 6 |
| Plaintext characters | < | = | > | ? | @ | [ | \ | ] | ^ | _ | ` | { | | | } | ~ | |||||
| Ciphertext characters | 0 | r | $ | / | \ | F | 7 | x | 5 | ' | L | p | W | . | i |
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
Please Note:
Please select the alphabet to be used:
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 N | is encoding function, and | |
| d(x) = (( x - B ) / A ) mod N | is 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.
Upper case Latin Alphabet
Alphabet size N = 26Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | ||||||||||||||
| Ciphertext characters | V | W | X | Y | Z | A |
Lower case Latin Alphabet
Alphabet size N = 26Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u |
| Plaintext characters | u | v | w | x | y | z | ||||||||||||||
| Ciphertext characters | v | w | x | y | z | a |
Upper and Lower case Latin Alphabet
Alphabet size N = 52Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | ||||||||
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | A |
Numbers Only Alphabet
Alphabet size N = 10Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Ciphertext characters | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |
Upper case Latin Alphabet with Numbers
Alphabet size N = 36Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A |
Lower case Latin Alphabet with Numbers
Alphabet size N = 36Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u |
| Plaintext characters | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a |
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:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Plaintext characters | 8 | 9 | ||||||||||||||||||
| Ciphertext characters | 9 | A |
Upper case Latin Alphabet and Space
Alphabet size N = 27Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | ||||||||||||||
| Ciphertext characters | V | W | X | Y | Z | A |
Lower case Latin Alphabet and Space
Alphabet size N = 27Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u |
| Plaintext characters | u | v | w | x | y | z | ||||||||||||||
| Ciphertext characters | v | w | x | y | z | a |
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:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | ||||||||
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | A |
Numbers and Space Alphabet
Alphabet size N = 11Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| Ciphertext characters | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |
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:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A |
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:Ciphertext:
Afine parameter B =
| Plaintext characters | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t |
| Ciphertext characters | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u |
| Plaintext characters | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||
| Ciphertext characters | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a |
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:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Plaintext characters | 8 | 9 | ||||||||||||||||||
| Ciphertext characters | 9 | A |
Printable ASCII characters
Alphabet size N = 95Afine parameter A = Not a coprime with the alphabet size
Afine parameter B =
Plaintext:Ciphertext:
Afine parameter B =
| Plaintext characters | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |
| Ciphertext characters | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U |
| Plaintext characters | U | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n |
| Ciphertext characters | V | W | X | Y | Z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| Plaintext characters | o | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Ciphertext characters | p | q | r | s | t | u | v | w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Plaintext characters | 8 | 9 | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / | : | ; | |
| Ciphertext characters | 9 | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / | : | ; | < | |
| Plaintext characters | < | = | > | ? | @ | [ | \ | ] | ^ | _ | ` | { | | | } | ~ | |||||
| Ciphertext characters | = | > | ? | @ | [ | \ | ] | ^ | _ | ` | { | | | } | ~ | A |
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:
Please Note:
Please select the alphabet to be used:
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.
Upper case Latin Alphabet
Alphabet size N = 26Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Lower case Latin Alphabet
Alphabet size N = 26Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Upper and Lower case Latin Alphabet
Alphabet size N = 52Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Numbers Only Alphabet
Alphabet size N = 10Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Upper case Latin Alphabet with Numbers
Alphabet size N = 36Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Lower case Latin Alphabet with Numbers
Alphabet size N = 36Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Upper and Lower case Latin Alphabet with Numbers
Alphabet size N = 62Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Upper case Latin Alphabet and Space
Alphabet size N = 27Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Lower case Latin Alphabet and Space
Alphabet size N = 27Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Upper and Lower case Latin Alphabet and Space
Alphabet size N = 53Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Numbers and Space Alphabet
Alphabet size N = 11Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Upper case Latin Alphabet with Numbers and Space
Alphabet size N = 37Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Lower case Latin Alphabet with Numbers and Space
Alphabet size N = 37Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Upper and Lower case Latin Alphabet with Numbers and Space
Alphabet size N = 63Key word:
K = Plaintext:Ciphertext:
K = Plaintext:Ciphertext:
Printable ASCII characters
Alphabet size N = 95Key word:
K = ?@[\]^_`{|}~' />Plaintext:Ciphertext:
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:
Here x = (p(x1), p(x2), ... , p(xm) ) , where x1 ∈ and p(xi) is the position of the character xi in
Please Note:
Please select the alphabet to be used:
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.
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: