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feat(legacy): Support Taproot in weight calculation.

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Andrew Kozlik 2021-11-10 14:52:05 +01:00 committed by Andrew Kozlik
parent e30ccabed3
commit 567cbd0250
1 changed files with 12 additions and 3 deletions
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15
legacy/firmware/transaction.c
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@ -49,13 +49,17 @@
/* size of a pubkey */
#define TXSIZE_PUBKEY 33
/* size of a DER signature (3 type bytes, 3 len bytes, 33 R, 32 S, 1 sighash */
#define TXSIZE_SIGNATURE 72
#define TXSIZE_DER_SIGNATURE 72
/* size of a Schnorr signature (32 R, 32 S, no sighash) */
#define TXSIZE_SCHNORR_SIGNATURE 64
/* size of a multiscript without pubkey (1 M, 1 N, 1 checksig) */
#define TXSIZE_MULTISIGSCRIPT 3
/* size of a p2wpkh script (1 version, 1 push, 20 hash) */
#define TXSIZE_WITNESSPKHASH 22
/* size of a p2wsh script (1 version, 1 push, 32 hash) */
#define TXSIZE_WITNESSSCRIPT 34
/* size of a p2tr script (1 version, 1 push, 32 hash) */
#define TXSIZE_TAPROOT 34
/* size of a p2pkh script (dup, hash, push, 20 pubkeyhash, equal, checksig) */
#define TXSIZE_P2PKHASH 25
/* size of a p2sh script (hash, push, 20 scripthash, equal) */
@ -920,11 +924,13 @@ static uint32_t tx_input_script_size(const TxInputType *txinput) {
TXSIZE_MULTISIGSCRIPT +
cryptoMultisigPubkeyCount(&(txinput->multisig)) * (1 + TXSIZE_PUBKEY);
input_script_size = 1 // the OP_FALSE bug in multisig
+ txinput->multisig.m * (1 + TXSIZE_SIGNATURE) +
+ txinput->multisig.m * (1 + TXSIZE_DER_SIGNATURE) +
op_push_size(multisig_script_size) +
multisig_script_size;
} else if (txinput->script_type == InputScriptType_SPENDTAPROOT) {
input_script_size = 1 + TXSIZE_SCHNORR_SIGNATURE;
} else {
input_script_size = (1 + TXSIZE_SIGNATURE + 1 + TXSIZE_PUBKEY);
input_script_size = (1 + TXSIZE_DER_SIGNATURE + 1 + TXSIZE_PUBKEY);
}
return input_script_size;
@ -946,6 +952,7 @@ uint32_t tx_input_weight(const CoinInfo *coin, const TxInputType *txinput) {
input_script_size += ser_length_size(input_script_size);
weight += 4 * input_script_size;
} else if (txinput->script_type == InputScriptType_SPENDWITNESS ||
txinput->script_type == InputScriptType_SPENDTAPROOT ||
txinput->script_type == InputScriptType_SPENDP2SHWITNESS) {
if (txinput->script_type == InputScriptType_SPENDP2SHWITNESS) {
weight += 4 * (2 + (txinput->has_multisig ? TXSIZE_WITNESSSCRIPT
@ -967,6 +974,8 @@ uint32_t tx_output_weight(const CoinInfo *coin, const TxOutputType *txoutput) {
if (txoutput->script_type == OutputScriptType_PAYTOWITNESS) {
output_script_size =
txoutput->has_multisig ? TXSIZE_WITNESSSCRIPT : TXSIZE_WITNESSPKHASH;
} else if (txoutput->script_type == OutputScriptType_PAYTOTAPROOT) {
output_script_size = TXSIZE_TAPROOT;
} else if (txoutput->script_type == OutputScriptType_PAYTOP2SHWITNESS) {
output_script_size = TXSIZE_P2SCRIPT;
} else {