• [ANSI] [SN]: Covert Communications - Cryptography.

    From Agent-037@700:100/1337 to All on Fri Aug 9 17:36:55 2019
    Welcome to today's Lesson on Co
    vert Communications, today we will take a look
    at Cryptography and its importance in the intelligence community
    . We willlearn how to make your message hidd
    en in plain site. In case your wonderingwhat
    kinda ink we will be using, first stop by and fill up the
    specimen cupwith some fresh piss. & remember if
    you wish you can alwaystake your favorite cipher and add
    3 or del 3 from the current config of your
    prefered cipher; and it will make the cipher harder to decode for
    the normalpasserby. Today
    's lesson will be thanks in part to the (3
    .C/9.I/1.A)
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    °°°° Lesson O
    ne: The Vigen¨re and Gro
    nsfeld CipherIntroduction Th
    e Vigen¨re Cipher is a polyalphabetic substi
    tutioncipher. The method was originally desc
    ribed by Giovan Battista Bellaso in his
    1553 book La cifra del. Sig.
    Giovan Battista Bellaso; however
    , the schemewas later misattributed to Bl
    aise de Vigen¨re in the 19th century
    , and isnow widely known as the "V
    igen¨re cipher".Blaise de Vigen
    ¨re actuallyinvented the stronger Autokey ci
    pher in 1586.The Vigen¨re C
    ipher wasconsidered "le chiffre ind hiffrable
    " (French for "the unbreakable cipher
    ")for 300 years, until in
    1863 Friedrich Kasiski published a successfu
    lattack on the Vigen?re cipher.
    Charles Babbage had, however,
    alreadydeveloped the same test in 1854.
    Gilbert Vernam worked on the vigenerecipher
    in the early 1900s, and his work eventually le
    d to the one-time pad,which is a prova
    bly unbreakable cipher.°° °° °° °° ±° °°
    A B C D E F G H I J K L M N O P Q R S T U V W
    X Y Z ---------------------------------------------
    ------A A B C D E F G H I J KL M N O P Q R S T U V W
    X Y ZB B C D E F G H I J K L M N O P Q R S T U V WX Y Z AC
    C D E F G H I J K L M N O P Q R S T U V W X Y Z A BD D E F G H I
    J K L M N O P Q R S T U V W X Y Z A B CE E F G H I J K L M N O P Q R S T U
    V W X Y Z A B C DF F G H I J K L M N O P Q R S T U V W X Y Z A B C D EG
    GH I J K L M N O P Q R S T U V W X Y Z A B C D E FH H I J
    K L M N O P Q R ST U V W X Y Z A B C D E F GI I J K L M N
    O P Q R S T U V W X Y Z A B C D EF G HJ J K L M N O P Q R
    S T U V W X Y Z A B C D E F G H IK K L M N O P QR S T U V
    W X Y Z A B C D E F G H I JL L M N O P Q R S T U V W X Y Z A B C
    D E F G H I J KM M N O P Q R S T U V W X Y Z A B C D E F G H I J K LN N
    OP Q R S T U V W X Y Z A B C D E F G H I J K L MO O P Q R
    S T U V W X Y Z AB C D E F G H I J K L M NP P Q R S T U V
    W X Y Z A B C D E F G H I J K L MN OQ Q R S T U V W X Y Z
    A B C D E F G H I J K L M N O PR R S T U V W X YZ A B C D
    E F G H I J K L M N O P QS S T U V W X Y Z A B C D E F G H I J K
    L M N O P Q RT T U V W X Y Z A B C D E F G H I J K L M N O P Q R SU U V
    WX Y Z A B C D E F G H I J K L M N O P Q R S TV V W X Y Z
    A B C D E F G H IJ K L M N O P Q R S T UW W X Y Z A B C D
    E F G H I J K L M N O P Q R S T UVX X Y Z A B C D E F G H
    I J K L M N O P Q R S T U V WY Y Z A B C D E F GH I J K L
    M N O P Q R S T U V W XZ Z A B C D E F G H I J K L M N O P Q R S
    T U V W X Y- This concludes our first lesson
    . CHQ - P* AFFIL
    o+ Agent-037
    --- Mystic BBS v1.12 A43 2019/03/02 (Linux/64)
    * Origin: Central HeadQuarters (700:100/1337)