Function signmessagewithprivkey

src/rpc/misc.cpp:399–437

}

static RPCHelpMan signmessagewithprivkey()
{
    return RPCHelpMan{"signmessagewithprivkey",
                "\nSign a message with the private key of an address\n",
                {
                    {"privkey", RPCArg::Type::STR, RPCArg::Optional::NO, "The private key to sign the message with."},
                    {"message", RPCArg::Type::STR, RPCArg::Optional::NO, "The message to create a signature of."},
                },
                RPCResult{
                    RPCResult::Type::STR, "signature", "The signature of the message encoded in base 64"
                },
                RPCExamples{
            "\nCreate the signature\n"
            + HelpExampleCli("signmessagewithprivkey", "\"privkey\" \"my message\"") +
            "\nVerify the signature\n"
            + HelpExampleCli("verifymessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"signature\" \"my message\"") +
            "\nAs a JSON-RPC call\n"
            + HelpExampleRpc("signmessagewithprivkey", "\"privkey\", \"my message\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    std::string strPrivkey = request.params[0].get_str();
    std::string strMessage = request.params[1].get_str();

    CKey key = DecodeSecret(strPrivkey);
    if (!key.IsValid()) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
    }

    std::string signature;

    if (!MessageSign(key, strMessage, signature)) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Sign failed");
    }

    return signature;
},
    };
}

static RPCHelpMan setmocktime()
{