How do I generate a TripleDES key from the user's password?

Is there any standard way to generate a Key (for
TripleDES for example) using a user provided
password? I want to store encripted data and I see
TripleDes key has to be 24 bytes long, so how do I
generate it consistently and safely from the user
provided password?
I know how to actually build a key with the
keyfactory, I'm talking about the aproach to generate
good keys from a user entered string. It can't be
random keys since I have to store those encripted
files and restore them later.Hi , i�m having the same problem, i was wondering if yoy found any solution so far.
I�ve tried this
SecretKey symmetricKey = SecretKeyFactory.getInstance("DESede").generateSecret(new PBEKeySpec("mypassword".toCharArray()));But it returns java.security.spec.InvalidKeySpecException: Inappropriate key specification
I have also tried to this:
SecretKey symmetricKey = SecretKeyFactory.getInstance("PBEWithMD5AndTripleDES").generateSecret(new PBEKeySpec(password.toCharArray()));But it results on different byte arrays whenever i try to do the encrypting, i mean it allways returns different encryptatios. I suposed it could be becaus it�s using some kind of random, and i need to have always a specific result.

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