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Add constant scriptCode policy in non-segwit scripts

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This disables OP_CODESEPARATOR in non-segwit scripts (even in an unexecuted branch), and makes a positive FindAndDelete result invalid. This ensures that the scriptCode serialized in SignatureHash() is always the same as the script passing to the EvalScript.
This commit is contained in:
Johnson Lau 2018-04-27 03:56:29 +08:00
parent 627c3762ce
commit 9dabfe49c0
6 changed files with 29 additions and 3 deletions
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4
src/script/script_error.cpp
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@ -89,6 +89,10 @@ const char* ScriptErrorString(const ScriptError serror)
return "Witness provided for non-witness script";
case SCRIPT_ERR_WITNESS_PUBKEYTYPE:
return "Using non-compressed keys in segwit";
case SCRIPT_ERR_OP_CODESEPARATOR:
return "Using OP_CODESEPARATOR in non-witness script";
case SCRIPT_ERR_SIG_FINDANDDELETE:
return "Signature is found in scriptCode";
case SCRIPT_ERR_UNKNOWN_ERROR:
case SCRIPT_ERR_ERROR_COUNT:
default: break;