mirror of
https://github.com/bitcoin/bitcoin.git
synced 2025-11-10 05:57:59 +01:00
4877fcdb42
9408a04e42tests, fuzz: use new NUMS_H const (josibake)b946f8a4c5crypto: add NUMS_H const (josibake) Pull request description: Broken out from #28122 --- [BIP341](https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki#constructing-and-spending-taproot-outputs) defines a NUMS point `H` as *H = lift_x(0x50929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803ac0)* which is [constructed](11af7015de/src/modules/rangeproof/main_impl.h (L16)) by taking the hash of the standard uncompressed encoding of the [secp256k1](https://www.secg.org/sec2-v2.pdf) base point G as X coordinate." Add this as a constant so it can be used in our codebase. My primary motivation is BIP352 specifies a special case for when taproot spends use `H` as the internal key, but outside of BIP352 it seems generally useful to have `H` in the codebase, for testing or other use cases. ACKs for top commit: paplorinc: re-ACK9408a04e42achow101: ACK9408a04e42theStack: Code-review ACK9408a04e42Tree-SHA512: ad84492f5d635c0cb05bd82546079ded7e5138e95361f20d8285a9ad6e69c10ee2cc3fe46e16b46ef03c4253c8bee1051911c6b91264c90c3b1ad33a824bff4b