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crypto: Small optimizations of BCrypt #271

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BiiChris
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@BiiChris BiiChris commented Sep 15, 2023 •
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Changes made:

  • Removed unecessary encoding and decoding between salt generation and expensiveblowfishsetup.
  • Magic cipherdata added directly into bcrypt function
  • Test salt unencoded since expensiveblowfishsetup no longer needs to unencode salt

These changes make no difference to time taken for entire algorithm due to the time spent is entirely on hashing, but it did lead to about 20% less allocations/operation on benchmarks. The size of these allocations are likely negligible compared to the total memory consumption, but nonetheless an improvement.

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Patch Set 1:

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Message from tricium-prod@appspot.gserviceaccount.com:

Patch Set 1:

(3 comments)

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@BiiChris BiiChris changed the title Small optimizations of BCrypt + separate version where password hash and secret are separated crypto: Small optimizations of BCrypt + separate version made supporting separated hashes and passwords Sep 16, 2023
@BiiChris BiiChris changed the title crypto: Small optimizations of BCrypt + separate version made supporting separated hashes and passwords crypto: Small optimizations of BCrypt Sep 18, 2023
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@BiiChris
bcrypt: MagicCypherData is now declared direcly within bcrypt(). Avoi…
cb2380f 
…ds global allocation and unecessary copying. Removed unecessary encoding/decoding of salt between newFromPassword() and expensiveBlowfishSetup(). Decode functions called within newFromHash() take direct reference to hash byteslice rather than copies and mutate them within the function, although they can be mutated after also.
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Patch Set 4:

(2 comments)

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