Figure 1. The Vigenère Table.
Note: A printing version of the Table is also available.
KEY PLAINTEXT
- 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 K L M N O P Q R S T U V W X Y Z
B 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
C 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 B
D 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 C
E 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 D
F 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 E
G G H I J K L M N O P Q R S T U V W X Y Z A B C D E F
H H I J K L M N O P Q R S T U V W X Y Z A B C D E F G
I I 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
J 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 I
K K 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
L 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 K
M 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 L
N N O P Q R S T U V W X Y Z A B C D E F G H I J K L M
O O P Q R S T U V W X Y Z A B C D E F G H I J K L M N
P P 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
Q 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 P
R R 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
S 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 R
T 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 S
U U V W X Y Z A B C D E F G H I J K L M N O P Q R S T
V V W X Y Z A B C D E F G H I J K L M N O P Q R S T U
W W 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
X 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 W
Y Y 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
Z 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
---------
Figure 2. Preparing Plaintext With Keyword KEY SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW Plaintext: THEIMA GEOFTH EUKWIL LRECEI VEACER TAINDE GREEOF DAMAGE... --------- Figure 3. Encoding With Key Alphabet "S." KEY SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW Plaintext: THEIMA GEOFTH EUKWIL LRECEI VEACER TAINDE GREEOF DAMAGE... Coded Text: L..... Y..... W..... D..... N..... L..... Y..... V..... ---------- Figure 4. Encoding With Key Alphabets "S" and "H." KEY SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW Plaintext: THEIMA GEOFTH EUKWIL LRECEI VEACER TAINDE GREEOF DAMAGE... Coded Text: LO.... YL.... WB.... DY.... NL.... LH.... YR.... VH.... ---------- Figure 5 Plaintext Fragment Encoded With All Six Key Alphabets. KEY SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW SHADOW Plaintext: THEIMA GEOFTH EUKWIL LRECEI VEACER TAINDE GREEOF DAMAGE... Coded Text: LOELAW YLOIFD WBAZUH DYEFQE NLAFQN LHIQPA YREHAB VHMDSA ---------- Figure 6. Complete Message, Encoded, With Numerical Markers. 5 10 15 20 25 30 35 40 45 50 55 60 65 SHADO WSHAD OWSHA DOWSH ADOWS HADOW SHADO WSHAD OWSHA DOWSH ADOWS HADOW SHADO THEIM AGEOF THEUK WILLR ECEIV EACER TAIND EGREE OFDAM AGERE GRETT ABLYA CRIMI LOELA WYLOI HDWBK ZWHDY EFSEN LAFSN LHIQR AYYEH CBVHM DUAJL GUSPL HBOMW UYIPW 70 75 80 85 90 95 100 105 110 115 120 125 130 WSHAD OWSHA DOWSH ADOWS HADOW SHADO WSHAD OWSHA DOWSH ADOWS HADOW SHADO WSHAD NALEL EMENT HASBE ENMAN UFACT URING ANDSE LLING ADEAD LYCHE MICAL WARFA REMAT JSSEO SIWUT KOOTL EQAWF BFDQP MYIQU WFKSH ZHAUG DRASK LBQDW TIFOH OHRIO NWTAW 135 140 145 150 155 160 165 170 175 180 185 190 195 OWSHA DOWSH ADOWS HADOW SHADO WSHAD OWSHA DOWSH ADOWS HADOW SHADO WSHAD OWSHA ERIAL NOTHI NGMOR EWESH ALLHO PETOA VOIDT HEDIS ASTRO USOUT COMEO FMUCH MORES SNAHL QCPZP NJAKJ LWHGD SSLKC LWAOD JKAKT KSZAZ AVHNG BSRIP UVMHC BEBCK AKJLS 200 205 210 DOWSH ADOWS HADOW SH ERIOU SREVE LATIO NS HFEGB SUSRW SAWWK FZ ---------- Figure 7. Repeated Sequences, and Distances Between Them.
LO 8-7=1 LA 26-4=22 AW 207-129=78 129-83=46 83-5=78 HD 18-11=7 DW 114-12=102 WH 147-17=130 YE 38-20=18 FS 28-22=6 SE 68-23=45 NL 30-25=5 SN 131-29=102 LH 55-31=24 IQ 93-33=60 RA 107-35=72 HCB 184-40=144 VH 172-43=129 JL 193-145=48 145-49=96 US 202-52=150 WU 73-60=13 YI 92-62=30 IP 189-63=126 SS 151-67=84 TK 165-75=90 WF 96-84=12 KS 166-98=68 SH 195-99=96 GD 149-105=44 WT 127-115=12 RI 178-123=55 WS 205-130=75 KJ 192-144=48 LW 156-146=10 KAK 190-162=28 GBS 199-175=24 SR 203-177=26---------- Figure 8. Factors of Distances Between Repeated Sequences.
2 3 4 5 6 7 8 9 Misc.
LO 8-7=1 LA 26-4=22 2 11 AW 207-129=78 2 3 6 26 129-83=46 2 23 83-5=78 2 3 6 26 HD 18-11=7 7 DW 114-12=102 2 3 6 17 WH 147-17=130 2 5 65 YE 38-20=18 2 3 6 FS 28-22=6 2 3 6 SE 68-23=45 3 5 9 NL 30-25=5 5 SN 131-29=102 2 3 6 65 LH 55-31=24 2 4 6 IQ 93-33=60 2 3 4 5 6 RA 107-35=72 2 3 4 6 8 9 HCB 184-40=144 2 3 4 6 8 9 12 16 18 VH 172-43=129 3 43 JL 193-145=48 2 3 4 6 8 12 16 145-49=96 2 3 4 6 8 US 202-52=150 2 3 5 6 WU 73-60=13 13 YI 92-62=30 2 3 5 6 IP 189-63=126 2 3 6 7 SS 151-67=84 2 3 4 6 7 TK 165-75=90 2 3 5 6 9 10 WF 96-84=12 2 3 4 6 KS 166-98=68 2 4 SH 195-99=96 2 3 4 6 8 GD 149-105=44 2 4 WT 127-115=12 2 3 4 6 RI 178-123=55 5 11 WS 205-130=75 3 5 KJ 192-144=48 2 3 4 6 8 LW 156-146=10 2 5 KAK 190-162=28 2 4 7 GBS 199-175=24 2 3 4 6 8 SR 203-177=26 2 13
---------- Figure 9. Message Separated Into Six Segments. Segment 1 Segment 2 Segment 3 Segment 4 Segment 5 Segment 6 L O E L A W Y L O I H D W B K Z W H D Y E F S E N L A F S N L H I Q R A Y Y E H C B V H M D U A J L G U S P L H B O M W U Y I P W J S S E O S I W U T K O O T L E Q A W F B F D Q P M Y I Q U W F K S H Z H A U G D R A S K L B Q D W T I F O H O H R I O N W T A W S N A H L Q C P Z P N J A K J L W H G D S S L K C L W A O D J K A K T K S Z A Z A V H N G B S R I P U V M H C B E B C K A K J L S H F E G B S U S R W S A W W K F Z ---------- Figure 10. Frequency Counts for Six Message Segments. Segment 1 Segment 2 Segment 3 Segment 4 Segment 5 Segment 6 A 4 1 4 0 3 3 B 0 4 1 1 0 2 C 0 0 1 0 4 0 D 1 0 0 4 0 3 E 1 0 5 0 0 2 F 2 0 0 3 1 0 G 2 0 2 0 1 0 H 0 5 0 5 2 3 I 0 0 4 2 1 1 J 2 0 0 1 1 1 K 0 3 1 3 0 3 L 2 6 3 1 0 1 M 1 0 2 0 1 0 N 1 0 1 0 0 4 O 1 1 0 2 3 1 P 0 1 0 0 0 3 Q 0 0 0 4 2 0 R 0 0 1 1 1 1 S 3 3 4 0 7 0 T 1 1 2 0 0 0 U 2 2 0 2 2 0 V 1 1 0 1 0 0 W 5 0 1 2 3 4 X 0 0 0 0 0 0 Y 2 4 0 0 0 0 Z 1 2 0 1 1 1
