fix(sdk-coin-bsc,sdk-coin-xdc): harden TSS verify via serializedTxHex - #9403
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Remove the weak verifyTssTransaction stubs from Bsc/BscToken so they inherit AbstractEthLikeNewCoins validation. Pass serializedTxHex for BSC (and XDC) in ECDSA MPCv1/v2 verify paths because legacy EIP-155 signableHex fails ethereumjs fromSerializedTx. Ticket: WCI-1169 Co-authored-by: Cursor <cursoragent@cursor.com>
Drop the unconditional-return-true stubs from Xdc/XdcToken so they inherit AbstractEthLikeNewCoins transfer validation. Relies on the sdk-core serializedTxHex verify path for legacy EIP-155. Ticket: WCI-1169 Co-authored-by: Cursor <cursoragent@cursor.com>
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Replace hard-coded icp/bsc/xdc family checks with CoinFeature.TSS_VERIFY_USE_SERIALIZED_TX_HEX on BSC, XDC, and ICP (and their tokens), so new coins can opt in via statics config. Ticket: WCI-1169 Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
verifyTssTransactionstubs from BSC/XDC (Bsc/BscToken,Xdc/XdcToken) that returnedtrueafter only shallow presence checks, so they inheritAbstractEthLikeNewCoinstransfer validationserializedTxHex(like ICP) forbsc/xdcduring verify — legacy EIP-155signableHex(RLP withv=chainId) failsethereumjsfromSerializedTx, which is why the stubs existedrecipients[0].data)Why
serializedTxHexTest plan
yarn run unit-test --scope @bitgo/sdk-coin-bscyarn run unit-test --scope @bitgo/sdk-coin-xdcTicket: WCI-1169