The Vigenère Tableau

The following is the tableau used for the Vigenère, Beaufort, and variant Beaufort ciphers.

   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 E F
 G G H I J K L M N O P Q R S T U V W X Y Z A B C E F G
 H H I J K L M N O P Q R S T U V W X Y Z A B C E F G H
 I I J K L M N O P Q R S T U V W X Y Z A B C E F G H I
 J J K L M N O P Q R S T U V W X Y Z A B C E F G H I J
 K K L M N O P Q R S T U V W X Y Z A B C E F G H I J K
 L L M N O P Q R S T U V W X Y Z A B C E F G H I J K L
 M M N O P Q R S T U V W X Y Z A B C E F G H I J K L M
 N N O P Q R S T U V W X Y Z A B C E F G H I J K L M N
 O O P Q R S T U V W X Y Z A B C E F G H I J K L M N O
 P P Q R S T U V W X Y Z A B C E F G H I J K L M N O P
 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

Vigenère

The leftmost column has the keys; the top alphabet has the plaintext.
                    message HELLOWORLD
                    key     ECSECSECSE
                    cipher  LGDPQOSTHD

Beaufort

Find the plaintext in the left alphabet, and trace in until you find the key letter. Then turn a right angle and go up. The letter at the top alphabet is the ciphertext.
                    message HELLOWORLD
                    key     ECSECSECSE
                    cipher  WYHSOWPLHB

Variant Beaufort

Find the key letter in the left alphabet, and trace in until you find the plaintext letter. Then turn a right angle and go up. The letter at the top alphabet is the ciphertext.
                    message HELLOWORLD
                    key     ECSECSECSE
                    cipher  DCTHMEKPTZ

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Send email to cs253@csif.cs.ucdavis.edu.

Department of Computer Science
University of California at Davis
Davis, CA 95616-8562


Page last modified on 5/2/97