| Commit message (Collapse) | Author | Age | Files | Lines |
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Default unless specified is now 4.
For SIMD code, use 2x the number of blocks which are processed in
parallel using SIMD by that cipher. It may make sense to increase this to
4x or even more, further experimentation is necessary.
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depend on the particular implementation. Add a new virtual function to
BlockCipher named parallelism that returns the number of blocks the
cipher object could or might want to process in parallel. Currently
set to 1 by default but may make sense to increase this for even
scalar implementations since it seems like better caching behavior
makes it a win.
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just too fragile and not that useful. Something like Java's checked exceptions
might be nice, but simply killing the process entirely if an unexpected
exception is thrown is not exactly useful for something trying to be robust.
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decryption. Currently only used for counter mode. Doesn't offer much
advantage as-is (though might help slightly, in terms of cache effects),
but allows for SIMD implementations to process multiple blocks in parallel
when possible. Particularly thinking here of Serpent; TEA/XTEA also seem
promising in this sense, as is Threefish once that is implemented as a
standalone block cipher.
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up during the Fedora submission review, that each source file include some
text about the license. One handy Perl script later and each file now has
the line
Distributed under the terms of the Botan license
after the copyright notices.
While I was in there modifying every file anyway, I also stripped out the
remainder of the block comments (lots of astericks before and after the
text); this is stylistic thing I picked up when I was first learning C++
but in retrospect it is not a good style as the structure makes it harder
to modify comments (with the result that comments become fewer, shorter and
are less likely to be updated, which are not good things).
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to support multiple blocks.
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