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Hybrid Public Key Encryption (HPKE) #42

Merged
merged 6 commits into from
Feb 23, 2025
Merged

Hybrid Public Key Encryption (HPKE) #42

merged 6 commits into from
Feb 23, 2025

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kazu-yamamoto
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This PR provides necessary features for HPKE (RFC 9180):

  • Checking salt length in PSS
  • Defining toPRK which can convert ByteString to PRK
    • RFC 9180 has a bug: Context.Export() expands "exporter_secret" which is already expanded, not a PRK.
  • Monoid for SharedSecret
  • EllipticCurve class now has encodeScalar, decodeScalar and scalarToPoint
    • This is a breaking change but I guess that no third party library use this. So, minor version up is reasonable.

@kazu-yamamoto kazu-yamamoto merged commit 495a1fe into main Feb 23, 2025
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@kazu-yamamoto kazu-yamamoto deleted the hpke branch February 23, 2025 23:53
@kazu-yamamoto kazu-yamamoto mentioned this pull request Feb 24, 2025
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