The following is a patch against 2.6.7 (should apply cleanly to 2.6.5 or 
above).  It implements the Tiny Encryption Algorithm (TEA) and the 
Xtended TEA (XTEA) algorithms.  TEA goes back to 1994 and is a good 
algorithm espically for memory constrained systems.  It is similar in
concept to the IDEA crypto.  It does NOT have any patent restrictions
and has been put in the public domain by Wheeler and Needham.  Tea is used
in quite a few products such as filesafe and even Microsoft's Xbox.
Signed-off-by: Aaron Grothe <ajgrothe@yahoo.com>
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: David S. Miller <davem@redhat.com>