Text Encryption
This JavaScript library provides encryption using simple, text-oriented method
called column transposition. The idea is to write the plain text in block on the
row-first bases. The text is then read column-first. The trick is in that the
columns are not read from left to right, but in the order specified by the
encryption key. Transliteration is also used.
Three Tries
If you want to 'protect' a site and don't have CGI access, you can try this
JavaScript. Visitors get three tries to enter the correct password then they are
refused entry. Note: The password is: password
Virgenere Encryption
A fine example of the classic virgenere script and is nearly impossible to
decode, even when using frequency analysis. This script is also entertaining
since you can actually see the encryption taking place.
XOR Encryption
Performs a bitwise XOR (Exclusive Or) on each byte of the data you wish to
encrypt using the key you provide. Useful as an additional security precaution
when sending sensitive information over the Internet. (However, this method is
not foolproof and should not be your only form of security.) The author notes
that longer and more random keys increase the strength of the encryption. Neat!
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