These pages provide tools for encrypting and decrypting text. Some instructions and tips (which may be better understood once you have looked at one of the pages):

• The text in the Text box carries over from page to page; you do not need to copy and paste it.
• On any page, if you check the View Source box before clicking the Submit button, the source code will appear at the bottom of the page.
• Any time you input text, the text is not case sensitive. For text in the Text box, characters other than A through Z will be skipped over in the algorithm on the page; nonetheless, you will receive a warning message if your text contains any non-alphabetic characters other than whitespace.
• Any time you input a number, the number must be an integer greater than or equal to 0. (Sometimes the limits are more specific, in which case you will be notified by error or warning messages.)