RustCrypto / RustCrypto/elliptic-curves

Bitwise operations for scalars

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Dominant language
Rust
Stars
874
Forks
299
Avg merge
1d 4h
Merged PRs (30d)
12

Description

I'm curious as to why Shr is the only bitwise operator implemented for scalars? I'm interested in k256 specifically, but I think this is a more generalized question.

Why not have Shl, And, etc. etc.?

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the scalar implementation and existing Shr support in k256, then compare how scalar bitwise operations are handled across the repository's curve implementations. Define the desired operator and trait scope, including which operations should be supported; done means the maintainers agree on that API and its compatibility implications.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
cryptography
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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