Method VerifySurjectionProof

src/script/sigcache.cpp:218–245

}

bool CachingSurjectionProofChecker::VerifySurjectionProof(secp256k1_surjectionproof& proof, std::vector<secp256k1_generator>& vTags, secp256k1_generator& gen, const secp256k1_context* secp256k1_ctx_verify_amounts, const uint256& wtxid) const
{

    // Serialize proof
    std::vector<unsigned char> vchproof;
    size_t proof_len = secp256k1_surjectionproof_serialized_size(secp256k1_ctx_verify_amounts, &proof);
    vchproof.resize(proof_len);
    assert(secp256k1_surjectionproof_serialize(secp256k1_ctx_verify_amounts, vchproof.data(), &proof_len, &proof) == 1);

    // wtxid commits to all data including surj targets
    // we need to specify the proof and output asset point to be unique
    uint256 entry;
    surjectionProofCache.ComputeEntrySurjectionProof(entry, wtxid, vchproof, std::vector<unsigned char>(std::begin(gen.data), std::end(gen.data)));

    if (surjectionProofCache.Get(entry, !store)) {
        return true;
    }

    if (secp256k1_surjectionproof_verify(secp256k1_ctx_verify_amounts, &proof, vTags.data(), vTags.size(), &gen) != 1) {
        return false;
    }

    if (store) {
        surjectionProofCache.Set(entry);
    }

    return true;
}

// END ELEMENTS
//