添加实验7
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25
BSVTest.sln
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25
BSVTest.sln
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@ -0,0 +1,25 @@
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.11.35312.102
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BSVTest", "BSVTest\BSVTest.csproj", "{DD9417B3-C8B3-49BB-A76B-26D5D7FADB40}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{DD9417B3-C8B3-49BB-A76B-26D5D7FADB40}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{DD9417B3-C8B3-49BB-A76B-26D5D7FADB40}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{DD9417B3-C8B3-49BB-A76B-26D5D7FADB40}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{DD9417B3-C8B3-49BB-A76B-26D5D7FADB40}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {C72CCBE2-C9F3-479D-A189-210BE09F2D54}
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EndGlobalSection
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EndGlobal
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@ -6,8 +6,6 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{A83F02BA-518
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bsv.BlockStats", "src\Bsv.BlockStats\Bsv.BlockStats.csproj", "{F40A60EB-646F-4182-ABBF-D0350B89E1D8}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bsv.WifTool", "src\Bsv.WifTool\Bsv.WifTool.csproj", "{527B4760-7362-49A1-96A1-216A1695B49C}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bsv.MessageTool", "src\Bsv.MessageTool\Bsv.MessageTool.csproj", "{DB2B26EB-9FD9-4B48-87CE-9AFEBB2CB683}"
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EndProject
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Global
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@ -1,78 +1,80 @@
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using System.Security.Cryptography;
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using System.Text.RegularExpressions;
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using System.Net.Http.Json;
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using System.Security.Cryptography;
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using System.Text;
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using System.Text.Json.Serialization;
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using BitcoinBlockchain.Data;
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using NBitcoin;
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const string cipherTextBase64 = "QklFMQMdos3oztNAUqW++4+GjfblOT2MSNZEd18K++IqbAckRCq7/RjlzUJbgonrHbZabwdDSyTkrpUM2X8K0aip90/7K0fNvbILk7kgfiQBxMErAwnJzcJXLtKI/Yb3M4Kpj3BSWLhFpYkpx8lMmBsg8lHHnD+JIkf8johOj60UzL0CxeFS5NvohFRmzdesox2Ge8CoNn8A+szcsrENmxvDWGsQx0C/D1ya6GobKYZpWnG+KA0yui7KpfQCM6jP7JvnaLc=";
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const string recipientWif = "cRLzVXAinDb2Fvn3hTn5R3q57wbigm5SvFe4WbiDmzrMqGYwPfD3";
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const string candidateAPublicKey = "029b9415580dc6fb0bc298923470ce2f2289cfefb6a06e14f1620e877c164a65b7";
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const string candidateCPrivateKey = "cUsnFska4Ksz8eqCA31JBVYCPPe453jQ8FXHfACaL23sZcBarXKS";
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const string candidateDPublicKey = "03f25e285ae095e927ef3477c05d67ce8d4d31e3a151459c9a76f124248a3738b5";
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const string privateKeyStr = "cNNfJQD8k2awDySowmH631JEJ9AVeueVkwLs9ihDkELhJhpMJVSt";
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const string opReturnData = "jHquEky7h7KGkUkaccZt1R4";
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const string whatsOnChainBaseUrl = "https://api.whatsonchain.com/v1/bsv/test";
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var recipientSecret = ResolveSecret(recipientWif);
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var envelope = Bie1Envelope.Parse(cipherTextBase64);
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var plainText = envelope.Decrypt(recipientSecret.PrivateKey);
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var sender = InferSender(envelope.SenderPublicKey, plainText, recipientSecret.PrivateKey.PubKey);
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var secret = ResolveSecret(privateKeyStr);
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var address = secret.PrivateKey.PubKey.GetAddress(ScriptPubKeyType.Legacy, secret.Network).ToString();
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var expectedScriptBytes = new byte[] { 0x6a }.Concat(Encoding.ASCII.GetBytes(opReturnData)).ToArray();
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var expectedScript = new ByteArray(expectedScriptBytes);
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var cipherBytes = NBitcoin.DataEncoders.Encoders.Base58.DecodeData(opReturnData);
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Console.WriteLine($"密文解密后是 {plainText}");
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Console.WriteLine($"内嵌发送方公钥是 {envelope.SenderPublicKey.ToHex()}");
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Console.WriteLine($"这条消息来自 {sender}");
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using var httpClient = new HttpClient();
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httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("BSVTest/1.0");
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static string InferSender(PubKey embeddedSenderPublicKey, string plainText, PubKey recipientPublicKey)
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var history = await httpClient.GetFromJsonAsync<List<AddressHistoryItem>>($"{whatsOnChainBaseUrl}/address/{address}/history")
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?? throw new InvalidOperationException("无法读取地址历史。");
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MatchedTransaction? firstMatch = null;
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foreach (var historyItem in history.OrderBy(item => item.Height).ThenBy(item => item.TxHash, StringComparer.Ordinal))
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{
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var candidates = new Dictionary<string, PubKey>(StringComparer.Ordinal)
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{
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["A"] = new PubKey(Convert.FromHexString(candidateAPublicKey)),
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["B"] = recipientPublicKey,
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["C"] = ResolveSecret(candidateCPrivateKey).PrivateKey.PubKey,
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["D"] = new PubKey(Convert.FromHexString(candidateDPublicKey))
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};
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var transaction = await httpClient.GetFromJsonAsync<TransactionResponse>($"{whatsOnChainBaseUrl}/tx/hash/{historyItem.TxHash}")
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?? throw new InvalidOperationException($"无法读取交易详情: {historyItem.TxHash}");
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var signedMessage = ParseSignedMessage(plainText);
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if (signedMessage is not null)
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foreach (var output in transaction.Vout)
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{
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foreach (var candidate in candidates)
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if (string.IsNullOrWhiteSpace(output.ScriptPubKey.Hex))
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{
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if (candidate.Value.VerifyMessage(signedMessage.Message, signedMessage.Signature))
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{
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return candidate.Key;
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continue;
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}
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var actualScript = new ByteArray(Convert.FromHexString(output.ScriptPubKey.Hex));
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if (actualScript == expectedScript)
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{
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firstMatch = new MatchedTransaction(
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transaction.TxId,
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historyItem.Height,
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transaction.BlockTime,
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output.N,
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output.ScriptPubKey.Hex,
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output.ScriptPubKey.OpReturn?.Parts ?? Array.Empty<string>());
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break;
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}
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}
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foreach (var candidate in candidates)
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if (firstMatch is not null)
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{
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if (candidate.Value.ToHex().Equals(embeddedSenderPublicKey.ToHex(), StringComparison.OrdinalIgnoreCase))
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{
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return candidate.Key;
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break;
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}
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}
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foreach (var candidate in candidates.Keys)
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{
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if (plainText.Contains($"来自{candidate}", StringComparison.Ordinal)
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|| plainText.Contains($"我是{candidate}", StringComparison.Ordinal)
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|| plainText.Contains($"from {candidate}", StringComparison.OrdinalIgnoreCase)
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|| plainText.Contains($"sender:{candidate}", StringComparison.OrdinalIgnoreCase))
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{
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return candidate;
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}
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}
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return "无法仅凭当前信息自动判定";
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}
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static SignedMessage? ParseSignedMessage(string plainText)
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if (firstMatch is null)
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{
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var match = Regex.Match(plainText, "^Msg: \"(?<message>.*)\", signature: \"(?<signature>.*)\"$", RegexOptions.CultureInvariant);
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if (!match.Success)
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{
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return null;
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}
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return new SignedMessage(match.Groups["message"].Value, match.Groups["signature"].Value);
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throw new InvalidOperationException("没有在该私钥相关地址的历史交易中找到目标 OP_RETURN。");
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}
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var plainText = DecryptWithBitcoinSVCryptorAes(cipherBytes, privateKeyStr);
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Console.WriteLine($"私钥网络: {secret.Network}");
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Console.WriteLine($"相关地址: {address}");
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Console.WriteLine($"目标脚本(hex): {expectedScript}");
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Console.WriteLine($"第一个命中交易: {firstMatch.TxId}");
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Console.WriteLine($"命中区块高度: {firstMatch.Height}");
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Console.WriteLine($"命中区块时间: {firstMatch.BlockTime}");
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Console.WriteLine($"命中输出序号: {firstMatch.OutputIndex}");
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Console.WriteLine($"链上脚本(hex): {firstMatch.ScriptHex}");
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Console.WriteLine($"Whatsonchain 解析出的 OP_RETURN parts: {string.Join(" | ", firstMatch.OpReturnParts)}");
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Console.WriteLine($"base58 解码后长度: {cipherBytes.Length}");
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Console.WriteLine($"base58 解码后 hex: {Convert.ToHexString(cipherBytes)}");
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Console.WriteLine($"AES_class.AesDecrypt 明文: {plainText}");
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static BitcoinSecret ResolveSecret(string wif)
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{
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foreach (var network in new[] { Network.Main, Network.TestNet })
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@ -89,69 +91,52 @@ static BitcoinSecret ResolveSecret(string wif)
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throw new FormatException($"无法识别 WIF 私钥对应的网络: {wif}");
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}
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sealed class Bie1Envelope
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static string DecryptWithBitcoinSVCryptorAes(byte[] cipherText, string privateKeyStr)
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{
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private Bie1Envelope(byte[] rawBytes, PubKey senderPublicKey, byte[] cipherText, byte[] mac)
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{
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RawBytes = rawBytes;
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SenderPublicKey = senderPublicKey;
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CipherText = cipherText;
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Mac = mac;
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}
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public byte[] RawBytes { get; }
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public PubKey SenderPublicKey { get; }
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public byte[] CipherText { get; }
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public byte[] Mac { get; }
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public static Bie1Envelope Parse(string base64)
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{
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var rawBytes = Convert.FromBase64String(base64);
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if (rawBytes.Length <= 69)
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{
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throw new FormatException("BIE1 密文长度无效。");
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}
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var magic = Encoding.ASCII.GetString(rawBytes, 0, 4);
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if (!string.Equals(magic, "BIE1", StringComparison.Ordinal))
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{
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throw new FormatException("密文不是 BIE1 格式。");
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}
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var senderPublicKeyBytes = rawBytes[4..37];
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var cipherText = rawBytes[37..^32];
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var mac = rawBytes[^32..];
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return new Bie1Envelope(rawBytes, new PubKey(senderPublicKeyBytes), cipherText, mac);
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}
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public string Decrypt(Key recipientPrivateKey)
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{
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var sharedPublicKey = SenderPublicKey.GetSharedPubkey(recipientPrivateKey);
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var derived = SHA512.HashData(sharedPublicKey.ToBytes());
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var iv = derived[..16];
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var encryptionKey = derived[16..32];
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var macKey = derived[32..64];
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var expectedMac = HMACSHA256.HashData(macKey, RawBytes[..^32]);
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if (!CryptographicOperations.FixedTimeEquals(expectedMac, Mac))
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{
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throw new CryptographicException("BIE1 HMAC 校验失败。");
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}
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var privateKeyBytes = Encoding.ASCII.GetBytes(privateKeyStr);
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using var aes = Aes.Create();
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aes.Mode = CipherMode.CBC;
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aes.Padding = PaddingMode.PKCS7;
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aes.Key = encryptionKey;
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using var sha256 = SHA256.Create();
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aes.Key = sha256.ComputeHash(privateKeyBytes, 0, 16);
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var ivSource = sha256.ComputeHash(privateKeyBytes, 16, 16);
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var iv = new byte[16];
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Array.Copy(ivSource, iv, iv.Length);
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aes.IV = iv;
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using var decryptor = aes.CreateDecryptor();
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var plainBytes = decryptor.TransformFinalBlock(CipherText, 0, CipherText.Length);
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return Encoding.UTF8.GetString(plainBytes);
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using var memoryStream = new MemoryStream();
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using (var cryptoStream = new CryptoStream(memoryStream, aes.CreateDecryptor(), CryptoStreamMode.Write))
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{
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cryptoStream.Write(cipherText, 0, cipherText.Length);
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cryptoStream.Close();
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}
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return Encoding.UTF8.GetString(memoryStream.ToArray());
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}
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sealed record SignedMessage(string Message, string Signature);
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sealed record AddressHistoryItem(
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[property: JsonPropertyName("tx_hash")] string TxHash,
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[property: JsonPropertyName("height")] long Height);
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sealed record TransactionResponse(
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[property: JsonPropertyName("txid")] string TxId,
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[property: JsonPropertyName("blocktime")] long? BlockTime,
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[property: JsonPropertyName("vout")] IReadOnlyList<TransactionOutputResponse> Vout);
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sealed record TransactionOutputResponse(
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[property: JsonPropertyName("n")] int N,
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[property: JsonPropertyName("scriptPubKey")] ScriptPubKeyResponse ScriptPubKey);
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sealed record ScriptPubKeyResponse(
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[property: JsonPropertyName("hex")] string Hex,
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[property: JsonPropertyName("opReturn")] OpReturnResponse? OpReturn);
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sealed record OpReturnResponse(
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[property: JsonPropertyName("parts")] IReadOnlyList<string>? Parts);
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sealed record MatchedTransaction(
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string TxId,
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long Height,
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long? BlockTime,
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int OutputIndex,
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string ScriptHex,
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IReadOnlyList<string> OpReturnParts);
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@ -1,14 +0,0 @@
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="BsvBitcoinBlockChain" Version="1.3.0" />
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</ItemGroup>
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</Project>
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@ -1,43 +0,0 @@
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using NBitcoin;
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const string defaultWif = "Kwa6hgpEfzwcsvcTCetNjfkPtcCgVt9suVo4zjtBp7At17GAQZUi";
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var wif = args.FirstOrDefault() ?? defaultWif;
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var report = Create(wif);
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Console.WriteLine($"WIF私钥：{wif}");
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Console.WriteLine($"其网络是 {report.NetworkName}");
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Console.WriteLine($"对应的public key 是 {report.PublicKey}");
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Console.WriteLine($"对应的public key hash 是 {report.PublicKeyHash}");
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Console.WriteLine($"对应的地址是 {report.Address}");
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static WifDetails Create(string wif)
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{
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foreach (var candidate in new[]
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{
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new NetworkCandidate(Network.Main, "Main"),
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new NetworkCandidate(Network.TestNet, "TestNet")
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})
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{
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try
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{
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var secret = new BitcoinSecret(wif, candidate.Network);
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var pubKey = secret.PrivateKey.PubKey;
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return new WifDetails(
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candidate.NetworkName,
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pubKey.ToHex(),
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pubKey.Hash.ToString(),
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pubKey.GetAddress(ScriptPubKeyType.Legacy, candidate.Network).ToString());
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}
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catch (FormatException)
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{
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}
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}
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throw new FormatException($"无法识别 WIF 私钥对应的网络: {wif}");
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}
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sealed record NetworkCandidate(Network Network, string NetworkName);
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sealed record WifDetails(string NetworkName, string PublicKey, string PublicKeyHash, string Address);
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