| Commit message (Collapse) | Author | Age | Files | Lines |
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Add get_byte_var for the few cases that need a variable index
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We had done this in an ad-hoc way in the past for eg the AES tables
but given how easy C++'s alignas is to use we should apply it
universally.
Use 256 byte alignment for larger tables since that heads of any
possible issues that arise from machines with large cache lines.
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This saves 15K in Camellia, 3K in ARIA and 3.5K in SEED, at the cost
of somewhat slower implementation. ARIA and SEED see the worst hit
because they never made any attempt at lessening impact of a cache
based side channel. Camellia did, and the new implementation is much
faster than the previous F_SLOW so perf impact there is minimal.
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Now modules default to internal headers instead of defaulting to public; making
a new public API should be a visible and intentional choice.
Brings the public header count from over 300 to around 150.
Also removes the deprecated tls_blocking interface
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Previously calling update or encrypt without calling set_key first
would result in invalid outputs or else crashing.
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ISO C++ reserves names with double underscores in them
Closes #512
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Defined in build.h, all equal to BOTAN_DLL so ties into existing
system for exporting symbols.
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Renames a couple of functions for somewhat better name consistency,
eg make_u32bit becomes make_uint32. The old typedefs remain for now
since probably lots of application code uses them.
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In some cases this can offer better optimization, via devirtualization.
And it lets the user know the class is not intended for derivation.
Some discussion in GH #402
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(Two part commit with 64caa9a to work around git's insane implied
rename system)
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Simpler, and a bit faster also it seems (but not fast)
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The support problems from having static libraries not work in the
obvious way will be endless trouble. Instead have each set of
registrations tag along in a source file for the basic type, at the
cost of some extra ifdefs. On shared libs this is harmless -
everything is going into the shared object anyway. With static libs,
this means pulling in a single block cipher pulls in the text of all
the them. But that's still strictly better than the amalgamation
(which is really pulling in everything), and it works (unlike status quo).
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Transforms and BlockCiphers. Registration for all types is done at
startup but is very cheap as just a std::function and a std::map entry
are created, no actual objects are created until needed. This is a
huge improvement over Algorithm_Factory which used T::clone() as the
function and thus kept a prototype object of each type in memory.
Replace existing lookup mechanisms for ciphers, AEADs, and compression
to use the transform lookup. The existing Engine framework remains in
place for BlockCipher, but the engines now just call to the registry
instead of having hardcoded lookups.
s/Transformation/Transform/ with typedefs for compatability.
Remove lib/selftest code (for runtime selftesting): not the right approach.
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Update license header line to specify the terms and refer to the file,
neither of which it included before.
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