Upstream PRs 1824, 1777, 1834, 1837, 1839, 1841#357

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DarkWindman wants to merge 17 commits intoBlockstreamResearch:masterfrom

mllwchrry:sync-7262adb4

Commits on Feb 16, 2026

util: introduce and use `ARRAY_SIZE` macro
theStack
committed

Commits on Mar 4, 2026

Merge bitcoin-core/secp256k1#1777: Make SHA256 compression runtime pluggable
real-or-random
committed

Commits on Mar 11, 2026

ecmult: Document and test ng=NULL in ecmult
real-or-random
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eckey: Call ecmult with NULL instead of zero scalar
real-or-random
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Merge bitcoin-core/secp256k1#1834: ecmult: Document and test ng=NULL in ecmult
real-or-random
committed

Commits on Mar 20, 2026

tests: Fix C89 function pointer initialization in ellswift tests
mllwchrry
committed

Commits on Mar 23, 2026

ecdsa: VERIFY_CHECK result of _fe_set_b32_limit
real-or-random
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Commits on Mar 25, 2026

Commits on Mar 26, 2026

Commits on Apr 1, 2026

Merge branch 'master' into sync-7262adb4
DarkWindman
committed

Commits on Apr 20, 2026

modules, tests: Port bitcoin-core/secp256k1#1777 and bitcoin-core/secp256k1#1824 to zkp-specific code
DarkWindman
committed