#28 Monthly Cipher

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#Cryptography

LECTURE #28: MONTHLY CIPHER

     Monthly Cipher’s arrangement of letter is similar to  keypad cipher  as ABC, DEF, GHI, etcetera. It also has a similar type of NEWS Cipher. Monthly cipher is used to convert message into numbers and give confusion to the receiver.

ALGORITHM:
(see picture attached)

Let   September   be the first letter
       October         as the second letter
       November     as the third letter
and December      as the fourth letter
         
           the  SOND , will serve as the “guide” to indicate which letter is being used/ to use.

EXAMPLE:
    To Encrypt, the pattern will be,

       (SOND) + letter + (SOND) +letter+ (SOND) + letter

Plaintext: WATSON
   à SWSASTDSNOON – the letters is then replaced as to which month they  are correspond to  à SAugSJanSJulDJunNMayOMay  à convert them to 1-12, as the numbering of the month goes  à 98-91-97-126-115-105 à  and that will include as our encrypted message.

To  Decrypt, the numbers will be converted to Months, then let the SOND be your guide.

GAME: Try This One!
1) 98-91-97-126-115-105-126   95-113-93-103-97-118   91-105-92   126-98-102-102-97
2) 91-93-116-102-102   97-115   95-91-116-97-113-91-114    114-91-98

— FITA —

— FITA —

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