Rosicrucian cipher

In 1513 Cornelius Agrippa introduce early form Rosicrucian Cipher in his books Occult of Philosophy. Geometric and simple substitution cipher are well known ciphers 

    Pigpen , Freemason, Napoleon and tic tac toe ciphers in which alphabets or symbols arrange in grids. 

This is an anagram, "How to reconstruct a data " lets encode the message.

      Pigpen cipher , Rosicrucian and Tic tac toe Cipher

                     Thank you have a good day.

   

ROT13 community

ROT13 is a member of substitution cipher class. I had discuss two members of  this class, if you remember. 
          Atbash cipher
          Affine Cipher (shift cipher)

If you remember the history which I had share you. Atbash cipher encode message by shifting key = -1 but in inverse direction.
          A = Z, B = Y and so on.
However in shift cipher key = 3.

                Message : HELLO
                                : JGNNQ
Both ciphers are special affine cipher case.
As you know shift cipher had introduced by julius caesar in rome. Julius had encoded message by shifting letter 3 time forward, so that it will not understand. However after 2 or 3 decade later it's is easy to decipher. The above example use same technique.In Rot13 alphabets shift by 13 letters. 
           A = N, B = O and so on.
        

Let time to solve a riddle: 
                 Yrg cynl n tnzr. Zl anzr vf Ze K. Zngurzngvpf fbyir ernyvgl ceboyrzf, ohg fpvrapr yngre cebir gur inyvqvgl bs zngurzngvpf ehyrf. Pna lbh qrpvcure gur grkg 


Rot13 use in encoded email, window xp registry and many places. Later prove that this cipher is not enough power to protect confidential data. 

Rot is very large community. Rot1, Rot 2,.... Rot 26, Rot 47 are available .
Rot5 deal with numeric but there is limit 0 - 4 
Rot13 deal with uppercase letter have 26 limit
Rot18 deal with uppercase letters and numeric values.
In Rot47 numbers, uppercase letters, lowercase letters, punctuations are use to secure the message. Best of luck 
                              vFC 59GAI @63;2 D3< H9K47 3:C6 `b J?>= B3E7]
                               Sgzmj xnt Gzud z mhbd czx

   

Solve Juggle Pieces

Hello guys, Today is quite interesting topic "Juggle the pieces", this is elaborate after affine ciphers.

Affine Ciphers are monoalphabetic ciphers, because every alphabet map against a number. Affine cipher introduce modulus operator. There are so many ciphers build on affine ciphers. Previous cipher Oh yeah, very well Atbash cipher also a good example of this category.
Mathematical Statement:
                E(X) = D(E(X))-----------------------------------------------------(0)
                here E is a function that take parameter x and return encrypted text. Similar with D function but this is inverse function of E.
                 E(x) = (ax+b) mod m--------------------------------------------(1)
                  a, b are keys and m is size of alphabetic, while modules (mod) is an operator which help to solve the equation. a , m both of them are co prime. X key-factor{R{0,..... m-1}}
                D(x) = a^-1 (x-b) mod m----------------------------------------(2)
 If inverse of a doesn't exit then you can't solve through affine cipher. It's a only condition that is necessary for this type of ciphers.
                   1 = aa^-1 mod m --------------------------------------------- (3)
Equation 3 prove that if a , m are co prime and a doesn't have any restriction it's solvable.

Rail Fence Cipher
Now you can solve monoalphabetic ciphers because you know game rules.
Now time to play with pieces.
This cipher belong to another class of cipher transposition cipher, this cipher called zig zag or rail fence cipher.
  There is a man who had receive a call from a private and he say "HOENEL MSEGRL SE" and then call had ended. He think that is just a prank call but the scene is quit awkward, so he try to decrypt the message will you help him. You can send me answer of this puzzle.
               Example 
                      message : "All is well"
                     A        L          S        E        L
                          L            I       W        L
                      Cipher text:  ALSELLIWL
How can I write like this, it's simple. In this cipher you can write text in zigzag form. Start from first row, then second row then first and so on. This is the case when key should be 2.
 However if K should be 3 or 4 or any higher order.
       
              A            S        W            X

                 L         I              E       L

                      L                       L 

Cipher text :      ASWLIELLL
One that i skip X means termination of string.
Thank you for reading