Update libsecp256k1 subtree#4332

Merged

UdjinM6 merged 8 commits intodashpay:developfrom

UdjinM6:secp256k1_updates

Aug 11, 2021

Commits on Aug 10, 2021

Merge #14047: Add HKDF_HMAC256_L32 and method to negate a private key

laanwj
authored and
UdjinM6
committed
Merge #12461: scripted-diff: Rename key size consts to be relative to their class

laanwj
authored and
UdjinM6
committed
Merge #19228: Update libsecp256k1 subtree

fanquake
authored and
UdjinM6
committed
Merge #19944: Update secp256k1 subtree (including BIP340 support)

fanquake
authored and
UdjinM6
committed
Merge #20147: Update libsecp256k1 (endomorphism, test improvements)

fanquake
authored and
UdjinM6
committed
Merge #20257: Update secp256k1 subtree to latest master

fanquake
authored and
UdjinM6
committed
Merge #21573: Update libsecp256k1 subtree to latest master

laanwj
authored and
UdjinM6
committed
Partial merge #22448: Update libsecp256k1 subtree to latest upstream

fanquake
authored and
UdjinM6
committed