Django-fields is an application which includes different kinds of models fields.
Right now, application contains two fields with encryption support: EncryptedCharField and EncryptedTextField.
This application depends on python-crypto, which can be found in many Linux repositories, or downloaded from http://www.dlitz.net/software/pycrypto/.
Under Ubuntu, just do:
sudo apt-get install python-crypto
Examples can be found at the examples directory. Look at the, tests.py.
Thanks to zbyte64 for his django snippet for encrypted fields. After some fixes, this snippet works as supposed.