Subj : [ANSI] [SN]: Covert Communications - Cryptography.
To   : All
From : Agent-037
Date : Fri Aug 09 2019 17:36:55

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)

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