e193a84fb2 Refactor message hashing into a utility function (Jeffrey Czyz)
f8f0d9893d Deduplicate the message signing code (Vasil Dimov)
2ce3447eb1 Deduplicate the message verifying code (Vasil Dimov)
Pull request description:
The message signing and verifying logic was replicated in a few places
in the code. Consolidate in a newly introduced `MessageSign()` and
`MessageVerify()` and add unit tests for them.
ACKs for top commit:
Sjors:
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achow101:
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instagibbs:
utACK https://github.com/bitcoin/bitcoin/pull/17577/commits/e193a84fb28068e38d5f54fbfd6208428c5bb655
meshcollider:
utACK e193a84fb2
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