try to avoid "very" special characters, char-mapping is voodoo anyway.
also they can increase the amount of time of brute-force attacks, you might have a system later on where you are unable to generate (i.e. type with your keyboard) these special characters.
[replies by Christian Kujau and Jari]How can I change my passphrase? [...] Is there a way to create a second valid passphrase (to avoid to lock me out if the new passphrase won't work)?
- Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/