Andrew Chow 8247a8db69 Merge bitcoin/bitcoin#28154: test: refactor: deduplicate segwitv0 ECDSA signing for tx inputs ...

83d7cfd542 test: refactor: deduplicate segwitv0 ECDSA signing for tx inputs (Sebastian Falbesoner)

Pull request description:

  This PR is a simple follow-up for #28025. It introduces a `signing_input_segwitv0` helper in order to deduplicate the following steps needed to create a segwitv0 ECDSA signature:
  1. calculate the `SegwitV0SignatureHash` with the desired sighash type
  2. create the actual digital signature by calling ECKey.sign_ecdsa on the signature message hash calculated above
  3. put the DER-encoded result (plus sighash byte) at the bottom of the witness stack

ACKs for top commit:
  achow101:
    ACK 83d7cfd542
  pinheadmz:
    code review ACK at 83d7cfd542

Tree-SHA512: b8e55409ddc9ddb14cfc06daeb4730d7750a4632f175f88dcac6ec4d216e71fd4a7eee325a64d6ebba3b33be50bcd30c2de7400f834c01abb67e52840d9823b6

2023-09-20 13:50:15 -04:00

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