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There are multiple unsatisfactory elements to the current solution,
as compared to how blinding was previously done:
Firstly, blinding is only used in the baseline implementations; the code
using OpenSSL and GMP is not protected by blinding at all.
Secondly, at the point we need to set up blinding, there is no access
to a PRNG. Currently I am going with a quite nasty solution, of using
a private key parameter to seed a simple PRNG constructed as:
SHA-512(TS1 || private_key_param || public_key_param || TS2)
I really want to fix both of these elements but I'm not sure how to do
so easily.
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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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