Use my SuperLameEncryption page at http://users.interact.net.au/~cblj/slen.htm
I still have to make the site look nice and explain how you use it, but
basically it goes like this.
You want to send email to your friends and/but your work has a filter
blocking messages with keywords, or your boss might be intercepting your
mails for whatever reason, or you just think it would be cool to encrypt
your mails. Well, what you do is this:
1. Utilise SuperLame key creation/distribution. Get together with your
friend in the park and agree on a key-phrase that you will both use to
encipher and decipher your communications. In our example, we'll pretend
that we have agreed on the key-prhase "toomanysecrets".
2. The sender points their browser at http://users.interact.net.au/~cblj/
enters the key-phrase in the 'key-phrase' field, then enters their plaintext
message in the 'plaintext/ciphertext' field, and hits the 'encipher' button.
3. The sender then copies the entire ciphertext which is now in the
'plaintext/ciphertext' field as a result of step 2, pastes it into their
email, and sends the message -- too easy.
4. The recipient points their browser at
http://users.interact.net.au/~cblj/, copies the ciphertext message into the
'plaintext/ciphertext' field, enters the key-phrase agreed upon in step 1
into the 'key-phrase' field, and hits the 'decipher' button -- revealing
the original plaintext message.
The encryption algorithm used means that it would be pretty easy for anyone
with a little crypto knowledge to decipher ciphertexts generated by it
(hence the 'SuperLame' component of my product name). The longer the
keyphrase the harder the decipherment, and the more often you change keys
the more difficult you make life for eavesdroppers.
Obviously bearing this stuff in mind, I don't recommend using it for
critical communications. Can you imagine the news headlines like "CIA
Arrests Terrorists after decoding their SuperLameENcrypted Communications"?
On the plus side however, it will get your emails past key word filters, and
it would make your boss go to a lot of trouble to read your communications.
Maybe one day I'll use a stronger encryption algorithm like Rijndael.
Notes:
Because the SuperLameENcryption application is executed using clientside
scripting technologies there is no transmission of plaintext data to a
webserver, and thus no possibility of interception there. Also, the page
could be copied and run locally without any problems, negating the need to
connect to the website to process messages.
Obviously you can't encrypt email attachments with this tool.
Slashdot Mirror
Use my SuperLameEncryption page at http://users.interact.net.au/~cblj/slen.htm
I still have to make the site look nice and explain how you use it, but
basically it goes like this.
You want to send email to your friends and/but your work has a filter
blocking messages with keywords, or your boss might be intercepting your
mails for whatever reason, or you just think it would be cool to encrypt
your mails. Well, what you do is this:
1. Utilise SuperLame key creation/distribution. Get together with your
friend in the park and agree on a key-phrase that you will both use to
encipher and decipher your communications. In our example, we'll pretend
that we have agreed on the key-prhase "toomanysecrets".
2. The sender points their browser at http://users.interact.net.au/~cblj/
enters the key-phrase in the 'key-phrase' field, then enters their plaintext
message in the 'plaintext/ciphertext' field, and hits the 'encipher' button.
3. The sender then copies the entire ciphertext which is now in the
'plaintext/ciphertext' field as a result of step 2, pastes it into their
email, and sends the message -- too easy.
4. The recipient points their browser at
http://users.interact.net.au/~cblj/, copies the ciphertext message into the
'plaintext/ciphertext' field, enters the key-phrase agreed upon in step 1
into the 'key-phrase' field, and hits the 'decipher' button -- revealing
the original plaintext message.
The encryption algorithm used means that it would be pretty easy for anyone
with a little crypto knowledge to decipher ciphertexts generated by it
(hence the 'SuperLame' component of my product name). The longer the
keyphrase the harder the decipherment, and the more often you change keys
the more difficult you make life for eavesdroppers.
Obviously bearing this stuff in mind, I don't recommend using it for
critical communications. Can you imagine the news headlines like "CIA
Arrests Terrorists after decoding their SuperLameENcrypted Communications"?
On the plus side however, it will get your emails past key word filters, and
it would make your boss go to a lot of trouble to read your communications.
Maybe one day I'll use a stronger encryption algorithm like Rijndael.
Notes:
Because the SuperLameENcryption application is executed using clientside
scripting technologies there is no transmission of plaintext data to a
webserver, and thus no possibility of interception there. Also, the page
could be copied and run locally without any problems, negating the need to
connect to the website to process messages.
Obviously you can't encrypt email attachments with this tool.