Function CheckTransactionSignatureEncodingImpl

src/script/sigencoding.cpp:236–252

template <typename F>
static bool CheckTransactionSignatureEncodingImpl(const valtype &vchSig,
                                                  uint32_t flags,
                                                  ScriptError *serror, F fun) {
    // Empty signature. Not strictly DER encoded, but allowed to provide a
    // compact way to provide an invalid signature for use with CHECK(MULTI)SIG
    if (vchSig.size() == 0) {
        return true;
    }

    if (!fun(vchSig | boost::adaptors::sliced(0, vchSig.size() - 1), flags,
             serror)) {
        // serror is set
        return false;
    }

    return CheckSighashEncoding(vchSig, flags, serror);
}

bool CheckTransactionSignatureEncoding(const valtype &vchSig, uint32_t flags,
                                       ScriptError *serror) {