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Differential D2469 Diff 7094 src/script/sigencoding.cpp

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src/script/sigencoding.cpp

Show First 20 Lines • Show All 150 Lines • ▼ Show 20 Linesstatic bool IsValidECDSASignatureEncoding(const slicedvaltype &sig) {
} }
return true; return true;
} }
static bool CheckRawECDSASignatureEncoding(const slicedvaltype &sig, static bool CheckRawECDSASignatureEncoding(const slicedvaltype &sig,
uint32_t flags, uint32_t flags,
ScriptError *serror) { ScriptError *serror) {
if ((flags & SCRIPT_ENABLE_SCHNORR) && (sig.size() == 64)) {
return set_error(serror, SCRIPT_ERR_SIG_BADLENGTH);
}
if ((flags & (SCRIPT_VERIFY_DERSIG | SCRIPT_VERIFY_LOW_S | if ((flags & (SCRIPT_VERIFY_DERSIG | SCRIPT_VERIFY_LOW_S |
SCRIPT_VERIFY_STRICTENC)) && SCRIPT_VERIFY_STRICTENC)) &&
!IsValidECDSASignatureEncoding(sig)) { !IsValidECDSASignatureEncoding(sig)) {
return set_error(serror, SCRIPT_ERR_SIG_DER); return set_error(serror, SCRIPT_ERR_SIG_DER);
} }
if ((flags & SCRIPT_VERIFY_LOW_S) && !CPubKey::CheckLowS(sig)) { if ((flags & SCRIPT_VERIFY_LOW_S) && !CPubKey::CheckLowS(sig)) {
return set_error(serror, SCRIPT_ERR_SIG_HIGH_S); return set_error(serror, SCRIPT_ERR_SIG_HIGH_S);
} }
return true; return true;
} }
static bool CheckRawSignatureEncoding(const slicedvaltype &sig, uint32_t flags, static bool CheckRawSignatureEncoding(const slicedvaltype &sig, uint32_t flags,
ScriptError *serror) { ScriptError *serror) {
if ((flags & SCRIPT_ENABLE_SCHNORR) && (sig.size() == 64)) {
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return true;
}
return CheckRawECDSASignatureEncoding(sig, flags, serror); return CheckRawECDSASignatureEncoding(sig, flags, serror);
} }
bool CheckDataSignatureEncoding(const valtype &vchSig, uint32_t flags, bool CheckDataSignatureEncoding(const valtype &vchSig, uint32_t flags,
ScriptError *serror) { ScriptError *serror) {
// Empty signature. Not strictly DER encoded, but allowed to provide a // Empty signature. Not strictly DER encoded, but allowed to provide a
// compact way to provide an invalid signature for use with CHECK(MULTI)SIG // compact way to provide an invalid signature for use with CHECK(MULTI)SIG
if (vchSig.size() == 0) { if (vchSig.size() == 0) {
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