[tahoe-lafs-trac-stream] [pycryptopp] #46: Add combined AES+XSalsa20 cipher module

[pycryptopp]

#46: Add combined AES+XSalsa20 cipher module
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Reporter:  randombit    |          Owner:  dragonxue
    Type:  enhancement  |         Status:  new
Priority:  major        |      Milestone:
 Version:  0.5.19       |     Resolution:
Keywords:  xsalsa20     |  Launchpad Bug:
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Comment (by davidsarah):

 I see some issues with the interface in [attachment:ciphercombiner.py]
 (which, to avoid confusion, is not the same as the interface of the
 pseudocode in the Description):
  * why is the {{{key}}} parameter in the constructor optional?
  * what are the setter methods for? They're not documented, and code using
 them would have to be relying on implementation details of this particular
 combiner.
  * I would prefer a {{{process}}} method that takes a position, i.e. bytes
 from start of stream, as a parameter. (In contrast, it's not clear at all
 how the argument to {{{setCombinerIV}}} relates to the position.)

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Ticket URL: <http://tahoe-lafs.org/trac/pycryptopp/ticket/46#comment:5>
pycryptopp <https://tahoe-lafs.org/trac/pycryptopp>