Given a (HTML or plain text) file and a password, htmlbox encrypts the file and wraps the result into javascript which can decrypt it in (browser given the correct password, of course). See an example (the password is xkcd).

• multiple passwords support
• AES for encryption and SHA25 for key deriviation (from CryptoJS)

• Store store the plaintext in HTML source
• Authentication
• if somebody knows contents of a message, they can generate a modified version of it without knowing the key

• Python (>= 2.5 && < 3.0)
• PyCrypto
• (tested on Arch and Ubuntu Linux)

• git clone git://github.com/andres-erbsen/htmlbox.git
• cd htmlbox
• export PATH=$PATH:$(pwd)
• Add the installation directory to your persistent path if desired - otherwise you have to repeat the last two steps in each shell you want to use it.

• Encrypt secret.html using password whocares and save the results to attatchment.html by executing: cat secret.html | htmlbox.py whocares > attatchment.html
• Use passwords usual and tHe long pwd instead: cat secret.html | htmlbox.py usual "tHe long pwd" > attatchment.html
• Use precomputed hashes (as hex) instead of passwords: cat secret.html | htmlbox.py -H 065ec384cc2993d900b4f800a36e21f561eb0e7b6b42f73d1deacbdb90e9b633 > attatchment.html
• Convert plaintext to a html paragraph on the go: encrypt list of running processes: ps -e | htmlbox.py -p whocares > ps_e.html
• customize page title: -t "Very Funny"
• customize password prompt: -m "No plaintext the source, don't bother"