Function verifymessage

src/rpc/misc.cpp:350–397

}

static RPCHelpMan verifymessage()
{
    return RPCHelpMan{"verifymessage",
                "Verify a signed message.",
                {
                    {"address", RPCArg::Type::STR, RPCArg::Optional::NO, "The bitcoin address to use for the signature."},
                    {"signature", RPCArg::Type::STR, RPCArg::Optional::NO, "The signature provided by the signer in base 64 encoding (see signmessage)."},
                    {"message", RPCArg::Type::STR, RPCArg::Optional::NO, "The message that was signed."},
                },
                RPCResult{
                    RPCResult::Type::BOOL, "", "If the signature is verified or not."
                },
                RPCExamples{
            "\nUnlock the wallet for 30 seconds\n"
            + HelpExampleCli("walletpassphrase", "\"mypassphrase\" 30") +
            "\nCreate the signature\n"
            + HelpExampleCli("signmessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"my message\"") +
            "\nVerify the signature\n"
            + HelpExampleCli("verifymessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"signature\" \"my message\"") +
            "\nAs a JSON-RPC call\n"
            + HelpExampleRpc("verifymessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\", \"signature\", \"my message\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    LOCK(cs_main);

    std::string strAddress  = request.params[0].get_str();
    std::string strSign     = request.params[1].get_str();
    std::string strMessage  = request.params[2].get_str();

    switch (MessageVerify(strAddress, strSign, strMessage)) {
    case MessageVerificationResult::ERR_INVALID_ADDRESS:
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid address");
    case MessageVerificationResult::ERR_ADDRESS_NO_KEY:
        throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to key");
    case MessageVerificationResult::ERR_MALFORMED_SIGNATURE:
        throw JSONRPCError(RPC_TYPE_ERROR, "Malformed base64 encoding");
    case MessageVerificationResult::ERR_PUBKEY_NOT_RECOVERED:
    case MessageVerificationResult::ERR_NOT_SIGNED:
        return false;
    case MessageVerificationResult::OK:
        return true;
    }

    return false;
},
    };
}

static RPCHelpMan signmessagewithprivkey()
{