diff options
| -rw-r--r-- | src/policy/policy.cpp | 17 | ||||
| -rw-r--r-- | src/policy/policy.h | 2 |
2 files changed, 11 insertions, 8 deletions
diff --git a/src/policy/policy.cpp b/src/policy/policy.cpp index 91997aa883..4e33fd6cb5 100644 --- a/src/policy/policy.cpp +++ b/src/policy/policy.cpp @@ -92,14 +92,15 @@ bool IsStandardTx(const CTransaction& tx, bool permit_bare_multisig, const CFeeR for (const CTxIn& txin : tx.vin) { - // Biggest 'standard' txin is a 15-of-15 P2SH multisig with compressed - // keys (remember the 520 byte limit on redeemScript size). That works - // out to a (15*(33+1))+3=513 byte redeemScript, 513+1+15*(73+1)+3=1627 - // bytes of scriptSig, which we round off to 1650 bytes for some minor - // future-proofing. That's also enough to spend a 20-of-20 - // CHECKMULTISIG scriptPubKey, though such a scriptPubKey is not - // considered standard. - if (txin.scriptSig.size() > 1650) { + // Biggest 'standard' txin involving only keys is a 15-of-15 P2SH + // multisig with compressed keys (remember the 520 byte limit on + // redeemScript size). That works out to a (15*(33+1))+3=513 byte + // redeemScript, 513+1+15*(73+1)+3=1627 bytes of scriptSig, which + // we round off to 1650(MAX_STANDARD_SCRIPTSIG_SIZE) bytes for + // some minor future-proofing. That's also enough to spend a + // 20-of-20 CHECKMULTISIG scriptPubKey, though such a scriptPubKey + // is not considered standard. + if (txin.scriptSig.size() > MAX_STANDARD_SCRIPTSIG_SIZE) { reason = "scriptsig-size"; return false; } diff --git a/src/policy/policy.h b/src/policy/policy.h index 8090dff4c6..fdbf45a66c 100644 --- a/src/policy/policy.h +++ b/src/policy/policy.h @@ -44,6 +44,8 @@ static const unsigned int MAX_STANDARD_P2WSH_STACK_ITEM_SIZE = 80; static const unsigned int MAX_STANDARD_TAPSCRIPT_STACK_ITEM_SIZE = 80; /** The maximum size of a standard witnessScript */ static const unsigned int MAX_STANDARD_P2WSH_SCRIPT_SIZE = 3600; +/** The maximum size of a standard ScriptSig */ +static const unsigned int MAX_STANDARD_SCRIPTSIG_SIZE = 1650; /** Min feerate for defining dust. Historically this has been based on the * minRelayTxFee, however changing the dust limit changes which transactions are * standard and should be done with care and ideally rarely. It makes sense to |