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Implement constant-time X448 ladder#36

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AeonDave merged 1 commit into
mainfrom
codex/fix-x448-implementation-constant-time-issues
Oct 24, 2025
Merged

Implement constant-time X448 ladder#36
AeonDave merged 1 commit into
mainfrom
codex/fix-x448-implementation-constant-time-issues

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Summary

  • add an internal x448 package implementing constant-time field arithmetic and the Montgomery ladder
  • update the X448 ECDH helper to use the constant-time ladder and reject low-order inputs before multiplication

Testing

  • go test ./...

https://chatgpt.com/codex/tasks/task_e_68fb73779cec83259ecaa8c5309a0f04

@AeonDave AeonDave merged commit 67bcf4c into main Oct 24, 2025
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@AeonDave AeonDave deleted the codex/fix-x448-implementation-constant-time-issues branch October 24, 2025 13:13
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