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Add multisig_xpub_magic option to GetPublicKey #4305

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Add multisig_xpub_magic option to GetPublicKey #4305

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@andrewkozlik andrewkozlik commented Nov 3, 2024 •
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Fixes #2658

Adds a bool option multisig_xpub_magic to GetPublicKey, so that Trezor displays XPUBs with the correct SLIP-132 prefix (XPUB magic) for SegWit v0 multisig accounts.

See also Slack discussion about the solution: https://satoshilabs.slack.com/archives/C02V2PSDNA2/p1669125576505009

This PR unifies the xpub_magic handling for get_public_key() and get_address(). Each function behaved a bit differently when the required SegWit coin.xpub_magic_* attribute was not defined. One raised an exception while the other fell back to plain old coin.xpub_magic. However, from what I can tell, cointool.py guarantees that the attributes are defined if coin.segwit is true. So I feel that the simplest solution is to fall back.

@andrewkozlik andrewkozlik added core Trezor Core firmware. Runs on Trezor Model T and T2B1. trezorlib Python library and the command line trezorctl tool. bitcoin Bitcoin related protobuf Structure of messages exchanged between Trezor and the host feature Product related issue visible for end user python Pull requests that update Python code translations Put this label on a PR to run tests in all languages labels Nov 3, 2024
@andrewkozlik andrewkozlik self-assigned this Nov 3, 2024
@andrewkozlik andrewkozlik mentioned this pull request Nov 3, 2024
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github-actions bot commented Nov 3, 2024 •
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core UI changes device test click test persistence test
T2T1 Model T test(screens) main(screens) test(screens) main(screens) test(screens) main(screens)
T3B1 Safe 3 test(screens) main(screens) test(screens) main(screens) 2724
T3T1 Safe 5 test(screens) main(screens) test(screens) main(screens) test(screens) main(screens)
All main(screens)

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legacy UI changes device test(screens) main(screens)

@andrewkozlik andrewkozlik force-pushed the andrewkozlik/multisig branch 2 times, most recently from 48c04ce to 9c8dd25 Compare November 4, 2024 19:15
@andrewkozlik andrewkozlik marked this pull request as ready for review November 5, 2024 09:42
@andrewkozlik andrewkozlik removed the request for review from prusnak November 5, 2024 09:42
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bitcoin Bitcoin related core Trezor Core firmware. Runs on Trezor Model T and T2B1. feature Product related issue visible for end user protobuf Structure of messages exchanged between Trezor and the host python Pull requests that update Python code translations Put this label on a PR to run tests in all languages trezorlib Python library and the command line trezorctl tool.
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Multisig option when exporting public key
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