Allan (beaufour), you should be able to build the CFB128 mode
yourself using the ECB mode as a primitive.  It seems
straightforward to me (because 128 is the block size, you
don't need to shift).  This way you don't need to wait for
the support of AES in CFB128 mode in NSS.

The NIST AES validation list is a good way to find out which
crypto modules support AES in CFB128 mode:
http://csrc.nist.gov/cryptval/aes/aesval.html

Wan-Teh

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