fuzz coverage

Coverage Report

Created: 2025-10-29 15:27

/Users/eugenesiegel/btc/bitcoin/src/rpc/signmessage.cpp
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// Copyright (c) 2010 Satoshi Nakamoto
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// Copyright (c) 2009-2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <common/signmessage.h>
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#include <key.h>
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#include <key_io.h>
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#include <rpc/protocol.h>
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#include <rpc/request.h>
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#include <rpc/server.h>
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#include <rpc/util.h>
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#include <univalue.h>
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#include <string>
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static RPCHelpMan verifymessage()
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{
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    return RPCHelpMan{"verifymessage",
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        "Verify a signed message.",
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        {
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            {"address", RPCArg::Type::STR, RPCArg::Optional::NO, "The bitcoin address to use for the signature."},
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            {"signature", RPCArg::Type::STR, RPCArg::Optional::NO, "The signature provided by the signer in base 64 encoding (see signmessage)."},
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            {"message", RPCArg::Type::STR, RPCArg::Optional::NO, "The message that was signed."},
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        },
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        RPCResult{
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            RPCResult::Type::BOOL, "", "If the signature is verified or not."
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        },
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        RPCExamples{
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            "\nUnlock the wallet for 30 seconds\n"
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            + HelpExampleCli("walletpassphrase", "\"mypassphrase\" 30") +
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            "\nCreate the signature\n"
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            + HelpExampleCli("signmessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"my message\"") +
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            "\nVerify the signature\n"
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            + HelpExampleCli("verifymessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"signature\" \"my message\"") +
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            "\nAs a JSON-RPC call\n"
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            + HelpExampleRpc("verifymessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\", \"signature\", \"my message\"")
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        },
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        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
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        {
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            std::string strAddress = self.Arg<std::string>("address");
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            std::string strSign = self.Arg<std::string>("signature");
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            std::string strMessage = self.Arg<std::string>("message");
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            switch (MessageVerify(strAddress, strSign, strMessage)) {
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            case MessageVerificationResult::ERR_INVALID_ADDRESS:
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                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid address");
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            case MessageVerificationResult::ERR_ADDRESS_NO_KEY:
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                throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to key");
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            case MessageVerificationResult::ERR_MALFORMED_SIGNATURE:
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                throw JSONRPCError(RPC_TYPE_ERROR, "Malformed base64 encoding");
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            case MessageVerificationResult::ERR_PUBKEY_NOT_RECOVERED:
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            case MessageVerificationResult::ERR_NOT_SIGNED:
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                return false;
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            case MessageVerificationResult::OK:
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                return true;
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            }
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            return false;
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        },
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    };
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}
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static RPCHelpMan signmessagewithprivkey()
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{
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    return RPCHelpMan{
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        "signmessagewithprivkey",
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        "Sign a message with the private key of an address\n",
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        {
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            {"privkey", RPCArg::Type::STR, RPCArg::Optional::NO, "The private key to sign the message with."},
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            {"message", RPCArg::Type::STR, RPCArg::Optional::NO, "The message to create a signature of."},
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        },
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        RPCResult{
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            RPCResult::Type::STR, "signature", "The signature of the message encoded in base 64"
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        },
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        RPCExamples{
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            "\nCreate the signature\n"
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            + HelpExampleCli("signmessagewithprivkey", "\"privkey\" \"my message\"") +
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            "\nVerify the signature\n"
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            + HelpExampleCli("verifymessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"signature\" \"my message\"") +
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            "\nAs a JSON-RPC call\n"
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            + HelpExampleRpc("signmessagewithprivkey", "\"privkey\", \"my message\"")
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        },
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        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
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        {
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            std::string strPrivkey = request.params[0].get_str();
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            std::string strMessage = request.params[1].get_str();
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            CKey key = DecodeSecret(strPrivkey);
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            if (!key.IsValid()) {
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                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
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            }
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            std::string signature;
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            if (!MessageSign(key, strMessage, signature)) {
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                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Sign failed");
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            }
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            return signature;
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        },
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    };
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}
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void RegisterSignMessageRPCCommands(CRPCTable& t)
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{
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    static const CRPCCommand commands[]{
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        {"util", &verifymessage},
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        {"util", &signmessagewithprivkey},
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    };
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    for (const auto& c : commands) {
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        t.appendCommand(c.name, &c);
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    }
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}