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Refactor FIPS/SHA2 APIs #40

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Refactor FIPS/SHA2 APIs #40

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Commits on Nov 24, 2022

  1. Refactor SHA2 api 

    * Use abstract types for SHA2 state
  This allows to more easily replace SHA2 implementations
* Define 'free'-style functions for hash state
  This allows potential heap-based SHA2 implementations to instantiate
  sha2 in SPHINCS+
    @thomwiggers
    thomwiggers committed Nov 24, 2022
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  2. Refactor FIPS202 API 

    * Uses opaque incremental hashing context
  Allows easier replacement of hashing primitives by different backing
  implementations.
* Adds context release functions
  Allows heap-backed FIPS202 implementations.

fips202.[ch] from PQClean
    @thomwiggers
    thomwiggers committed Nov 24, 2022
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  3. Refactor out context initialization from hash_{hash}.c

    @thomwiggers
    thomwiggers committed Nov 24, 2022
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  4. Change hashing API in sha2-avx2 implementation

    @thomwiggers
    thomwiggers committed Nov 24, 2022
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  5. Fix Haraka and Shake context usage

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    thomwiggers committed Nov 24, 2022
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Commits on Jan 16, 2023

  1. Better align context.h 

    clang-tidy suggested that this layout was more efficient.
    @thomwiggers
    thomwiggers committed Jan 16, 2023
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  2. Don't rely on SHA2x1 internals

    @thomwiggers
    thomwiggers committed Jan 16, 2023
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  3. Fix missing context in shake-a64

    @thomwiggers
    thomwiggers committed Jan 16, 2023
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