* ChaCha20 implementation, first pass
* fix bug with clone_slice when length is 0
* final ChaCha20 crypto tidying
* final adjustments; add benchmark
* add guards everywhere else or w/e
* stdlib 'i++' conformity
* release notes & security warning updates
* update tests; cleanup; default counter should be 0 not 1
* remove prints in test file
* add extra unit tests for unaligned buffers
Co-authored-by: Manu Linares <mbarriolinares@gmail.com>
* one final alignment test
* nice contraction of tests w/ some paranoia sprinkled in
* nearly double the efficiency of chacha20's transform
Co-authored-by: Manu Linares <mbarriolinares@gmail.com>
* fix memory leak in test case
* improve one of the unit tests to cover more cases
* greatly simplify chacha20 'transform'
Co-authored-by: Manu Linares <mbarriolinares@gmail.com>
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Co-authored-by: Manu Linares <mbarriolinares@gmail.com>
