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feat(legacy): Add BIP86 paths to coin_path_check().

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Andrew Kozlik 2021-10-15 16:43:44 +02:00 committed by Andrew Kozlik
parent 2e4884199b
commit 78a9ab8123
1 changed files with 26 additions and 0 deletions
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26
legacy/firmware/crypto.c
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@ -655,6 +655,7 @@ bool coin_path_check(const CoinInfo *coin, InputScriptType script_type,
valid = valid && check_cointype(coin, address_n[1], check_known);
if (check_script_type) {
valid = valid && has_multisig;
// we do not support Multisig with Taproot yet
valid = valid && (script_type == InputScriptType_SPENDMULTISIG ||
script_type == InputScriptType_SPENDP2SHWITNESS ||
script_type == InputScriptType_SPENDWITNESS);
@ -722,6 +723,31 @@ bool coin_path_check(const CoinInfo *coin, InputScriptType script_type,
return valid;
}
// m/86' : BIP86 Taproot
// m / purpose' / coin_type' / account' / change / address_index
if (address_n_count > 0 && address_n[0] == (0x80000000 + 86)) {
valid = valid && coin->has_taproot;
valid = valid && (coin->bech32_prefix != NULL);
if (check_known) {
valid = valid && (address_n_count == 5);
} else {
valid = valid && (address_n_count >= 2);
}
valid = valid && check_cointype(coin, address_n[1], check_known);
if (check_script_type) {
// we do not support Multisig with Taproot yet
valid = valid && !has_multisig;
valid = valid && (script_type == InputScriptType_SPENDTAPROOT);
}
if (check_known) {
valid = valid && ((address_n[2] & 0x80000000) == 0x80000000);
valid = valid && ((address_n[2] & 0x7fffffff) <= PATH_MAX_ACCOUNT);
valid = valid && (address_n[3] <= PATH_MAX_CHANGE);
valid = valid && (address_n[4] <= PATH_MAX_ADDRESS_INDEX);
}
return valid;
}
// Green Address compatibility pattern. Will be removed in the future.
// m / [1,4] / address_index
if (address_n_count > 0 && (address_n[0] == 1 || address_n[0] == 4)) {