syntax = "proto3";

option go_package = "tofnd;tofnd";

package tofnd;

import "common.proto"; // import key presence request/response

service Multisig {
    rpc KeyPresence(KeyPresenceRequest) returns (KeyPresenceResponse);
    rpc Keygen(KeygenRequest) returns (KeygenResponse);
    rpc Sign(SignRequest) returns (SignResponse);
}

message KeygenRequest {
    string key_uid = 1;
    string party_uid = 2; // used only for logging
    Algorithm algorithm = 3;
}

message KeygenResponse {
    oneof keygen_response {
        bytes pub_key = 1; // SEC1-encoded compressed curve point
        string error = 2;  // reply with an error message if keygen fails
    }
}

message SignRequest {
    string key_uid = 1;
    bytes msg_to_sign = 2; // 32-byte pre-hashed message digest
    string party_uid = 3;  // used only for logging
    bytes pub_key = 4; // SEC1-encoded compressed pub key bytes to find the right mnemonic. Latest is used, if empty.
    Algorithm algorithm = 5;
}

message SignResponse {
    oneof sign_response {
        bytes signature = 1; // ASN.1 DER-encoded ECDSA signature
        string error = 2;    // reply with an error message if sign fails
    }
}