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division algorithm unless x == y, but this could result in n - t + 1
being negative which would cause an attempt to allocate about 4
gigabytes of memory. Fix this, and also add an assertion check in
the code to ensure that can't happen in any other way.
Never reproduced this with 32 bit digits but it would show up if the build
used 8 or 16 bit words.
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container like vector, truncate is simply resize, but what
MemoryRegion called resize will zap the entire contents, and then what
was resize was called grow_to. This is really problematic in terms of
the goal of replacing MemoryRegion with a vector with a custom
allocator.
In this checkin:
- Remove MemoryRegion::grow_to and MemoryRegion::truncate
- Change the semantics of MemoryRegion::resize to change the size
while keeping any current contents intact (up to the new size),
zero initializing any new values.
Unrelated, just noticed the lack while I was in there, add a version
of CryptoBox::decrypt taking a std::string for the input.
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containers (specifically vector).
Rename is_empty to empty
Remove has_items
Rename create to resize
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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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math/bigint - BigInt implementation
math/numbertheory - Math stuff built on top of BigInt
Coming soon: math/gfp (parts of pk/ecdsa)
Update deps in the pk files
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