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Berry support for crypto.SHA256 #17430

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merged 1 commit into from
Dec 17, 2022

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Description:

Add Berry support for SHA256. See documentation for examples. This will be needed for the Matter protocol. Size impact is minimal because SHA256 is already used in TLS.

Example test vectors from https://www.dlitz.net/crypto/shad256-test-vectors/

import crypto
h = crypto.SHA256()

# SHA256 of empty message
assert(h.out() == bytes("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"))

# (first 16 bytes of RC4 keystream where the key = 0)
h.update(bytes("de188941a3375d3a8a061e67576e926d"))
assert(h.out() == bytes("067c531269735ca7f541fdaca8f0dc76305d3cada140f89372a410fe5eff6e4d"))

Checklist:

  • The pull request is done against the latest development branch
  • Only relevant files were touched
  • Only one feature/fix was added per PR and the code change compiles without warnings
  • The code change is tested and works with Tasmota core ESP8266 V.2.7.4.9
  • The code change is tested and works with Tasmota core ESP32 V.2.0.5
  • I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass

@s-hadinger s-hadinger merged commit 93ee524 into arendst:development Dec 17, 2022
@s-hadinger s-hadinger deleted the berry_crypto_sha256 branch December 17, 2022 22:40
pull bot pushed a commit to justinforbes/Tasmota that referenced this pull request Dec 18, 2022
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