Simple Substitution Cipher

Description

This cipher replaces any plain text letter always by the same cipher text letter. It' just like having a bad keyboard driver: Whenever you hit the key labeled 'E', you obtain, say, 'K'. CipherClerk's Applet derives the substitution from the two key words: one for the plain text alphabet, one for the ciphertext alphabet. The Alphabet choices lets you select a scheme how this substitution is generated. For both alphabets you may specify an indicator. The alphabets are shifted so that the two indicators match. Default indicators are placed at the first letters of the mixed alphabets. Using the mixed alphabets
F I R S T K E Y A B C D G H J L M N O P Q U V W X Z
S E C O N D K Y A B F G H I J L M P Q R T U V W X Z

having indicators at x and y will be converted into:

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


To proceed, you may