Use s2n-bignum P-521 scalar multiplication and modular inverse #1879
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This replaces the general (fresh, not precomputed, point) scalar multiplication with the corresponding function p521_jscalarmul or p521_jscalarmul_alt from s2n-bignum, and also replaces the Fermat inverse in p521.c with the markedly faster and formally verified divstep-based code from s2n-bignum, bignum_inv_p521.
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This replaces the general (fresh, not precomputed, point) scalar multiplication with the corresponding function p521_jscalarmul or p521_jscalarmul_alt from s2n-bignum, and also replaces the Fermat inverse in p521.c with the markedly faster and formally verified divstep-based code from s2n-bignum, bignum_inv_p521.
Issues:
Resolves #ISSUE-NUMBER1
Addresses #ISSUE-NUMBER2
Description of changes:
Describe AWS-LC’s current behavior and how your code changes that behavior. If there are no issues this pr is resolving, explain why this change is necessary.
Call-outs:
Point out areas that need special attention or support during the review process. Discuss architecture or design changes.
Testing:
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