Enter plain text or a cryptogram in the top Text Field.
Enter a full or partial decryption scheme by typing the cipher letter(s)
you would like to be substituted for each plain text alphabet letter. Those
plain text letters for which you do not have a cipher letter pairing, should
have an asterisk (*), or nothing in the second row.
Press either the encrypt button or the decrypt button. NOTE: pressing
encrypt will cause each plain text letter in your input to be replaced
by the cipher text letter below it (if there is one) in the output, while
pressing decrypt will cause each cipher text letter (those in the second
row) of your input, to be replaced by the plain text letter above it, in
the output. For example, if you type an "X" below the letter "e" and press
encrypt, you are asking to replace every "e" with an "X". If you press
decrypt, you are asking to replace each "X" with an "e".