bbapi_schnorr.cpp

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#include "barretenberg/bbapi/bbapi_schnorr.hpp"
 
namespace bb::bbapi {
 
SchnorrComputePublicKey::Response SchnorrComputePublicKey::execute(BB_UNUSED BBApiRequest& request) &&
{
    return { grumpkin::g1::one * private_key };
}
 
SchnorrConstructSignature::Response SchnorrConstructSignature::execute(BB_UNUSED BBApiRequest& request) &&
{
    grumpkin::g1::affine_element pub_key = grumpkin::g1::one * private_key;
    crypto::schnorr_key_pair<grumpkin::fr, grumpkin::g1> key_pair = { private_key, pub_key };
 
    std::string message_str(reinterpret_cast<const char*>(message.data()), message.size());
    auto sig = crypto::schnorr_construct_signature<crypto::Blake2sHasher, grumpkin::fq>(message_str, key_pair);
    crypto::secure_erase_bytes(&key_pair.private_key, sizeof(key_pair.private_key));
 
    return { sig.s, sig.e };
}
 
SchnorrVerifySignature::Response SchnorrVerifySignature::execute(BB_UNUSED BBApiRequest& request) &&
{
    std::string message_str(reinterpret_cast<const char*>(message.data()), message.size());
    crypto::schnorr_signature sig = { s, e };
 
    bool result = crypto::schnorr_verify_signature<crypto::Blake2sHasher, grumpkin::fq, grumpkin::fr, grumpkin::g1>(
        message_str, public_key, sig);
 
    return { result };
}
 
} // namespace bb::bbapi