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If there are multiple external signers, `GetExternalSigner()` will
just pick the first one in the list. If the user has two or more
hardware wallets connected at the same time, he might not notice this.
This PR adds a check and fails with suitable message.
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-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
Commits of previous years:
* 2020: fa0074e2d82928016a43ca408717154a1c70a4db
* 2019: aaaaad6ac95b402fe18d019d67897ced6b316ee0
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We don't always want to finalize after signing, so make it possible to
do that.
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wallets
458a345b0590fd2fa04c7d8d70beb8d57e34bbc8 Add support for SIGHASH_DEFAULT in RPCs, and make it default (Pieter Wuille)
c0f0c8eccb04f90940007e0c6aaff56bf2ab35b5 tests: check spending of P2TR (Pieter Wuille)
a2380127e905e5849f90acc7c69832859d8336aa Basic Taproot signing logic in script/sign.cpp (Pieter Wuille)
49487bc3b6038393c1b9c2dbdc04a78ae1178f1a Make GetInputUTXO safer: verify non-witness UTXO match (Pieter Wuille)
fd3f6890f3dfd683f6f13db912caf5c4288adf08 Construct and use PrecomputedTransactionData in PSBT signing (Pieter Wuille)
5cb6502ac5730ea453edbec4c46027ac2ada97e0 Construct and use PrecomputedTransactionData in SignTransaction (Pieter Wuille)
5d2e22437b22e7465ae4be64069443bcc1769dc9 Don't nuke witness data when signing fails (Pieter Wuille)
ce9353164bdb6215a62b2b6dcb2121d331796f60 Permit full precomputation in PrecomputedTransactionData (Pieter Wuille)
e841fb503d7a662bde01ec2e4794faa989265950 Add precomputed txdata support to MutableTransactionSignatureCreator (Pieter Wuille)
a91d532338ecb66ec5bed164929d878dd55d63a4 Add CKey::SignSchnorr function for BIP 340/341 signing (Pieter Wuille)
e77a2839b54fa2039bba468e8c09dbbbf19b150a Use HandleMissingData also in CheckSchnorrSignature (Pieter Wuille)
dbb0ce9fbff01ffe4dd29da465f43ecaddc2854c Add TaprootSpendData data structure, equivalent to script map for P2[W]SH (Pieter Wuille)
Pull request description:
Builds on top of #22051, adding signing support after derivation support.
Nothing is changed in descriptor features. Signing works for key path and script path spending, through the normal sending functions, and PSBT-based RPCs. However, PSBT usability is rather low as no extensions have been defined to convey Taproot-specific information, so all script information must be known to the signing wallet.
ACKs for top commit:
achow101:
re-ACK 458a345b0590fd2fa04c7d8d70beb8d57e34bbc8
fjahr:
Code review ACK 458a345b0590fd2fa04c7d8d70beb8d57e34bbc8
Sjors:
ACK 458a345b0590fd2fa04c7d8d70beb8d57e34bbc8
Tree-SHA512: 30ed212cf7754763a4a81624ebc084c51727b8322711ac0b390369213c1a891d367ed8b123882ac08c99595320c11ec57ee42304ff22a69afdc3d1a0d55cc711
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In particular this make the node interface independent on whether external signer support is compiled.
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This commit moves the ExternalSigner class and RPC methods out of the wallet module.
The enumeratesigners RPC can be used without a wallet since #21417.
With additional modifications external signers could be used without a wallet in general, e.g. via signrawtransaction.
The signerdisplayaddress RPC is ranamed to walletdisplayaddress because it requires wallet context.
A future displayaddress RPC call without wallet context could take a descriptor argument.
This commit fixes a rpc_help.py failure when configured with --disable-wallet.
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