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Split application and library.

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This commit is contained in:
Valeriano A.R.
2020-09-02 00:03:14 +02:00
parent cd7a71bfe0
commit f97321d929
11 changed files with 123 additions and 19 deletions
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56
BasicBlockChain.Core/BasicBlockChain.Core.csproj Normal file
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProjectGuid>{919BC116-C8FC-4B65-B742-226B38437C48}</ProjectGuid>
<OutputType>Library</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace>BasicBlockChain.Core</RootNamespace>
<AssemblyName>BasicBlockChain.Core</AssemblyName>
<TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
<Deterministic>true</Deterministic>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<DebugType>pdbonly</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
<ItemGroup>
<Reference Include="System" />
<Reference Include="System.Core" />
<Reference Include="System.Xml.Linq" />
<Reference Include="System.Data.DataSetExtensions" />
<Reference Include="Microsoft.CSharp" />
<Reference Include="System.Data" />
<Reference Include="System.Net.Http" />
<Reference Include="System.Xml" />
<Reference Include="VAR.Json, Version=1.1.1.36534, Culture=neutral, processorArchitecture=MSIL">
<HintPath>..\packages\VAR.Json.1.1.1.36534\lib\net461\VAR.Json.dll</HintPath>
</Reference>
</ItemGroup>
<ItemGroup>
<Compile Include="Block.cs" />
<Compile Include="BlockChain.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="Transaction.cs" />
</ItemGroup>
<ItemGroup>
<None Include="packages.config" />
</ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
</Project>

63
BasicBlockChain.Core/Block.cs Normal file
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using System;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;
using VAR.Json;
namespace BasicBlockChain.Core
{
public class Block
{
public int Index { get; set; }
public DateTime Date { get; set; }
public string PreviousHash { get; set; }
public List<Transaction> Transactions { get; } = new List<Transaction>();
public string Hash { get; set; }
public int Nonce { get; set; }
public Block(DateTime date, Block previousBlock, IList<Transaction> transactions)
{
Index = (previousBlock?.Index ?? -1) + 1;
Date = date;
PreviousHash = previousBlock?.Hash;
if (transactions != null) { Transactions.AddRange(transactions); }
Nonce = 0;
Hash = CalculateHash();
}
private string GetData()
{
return JsonWriter.WriteObject(Transactions);
}
public string CalculateHash(string data = null, SHA256 sha256 = null)
{
if (sha256 == null) { sha256 = SHA256.Create(); }
if (data == null)
{
data = GetData();
}
byte[] dataBytes = Encoding.UTF8.GetBytes(string.Format("{0}-{1}-{2}-{3}",
Date,
PreviousHash,
data,
Nonce));
byte[] hashBytes = sha256.ComputeHash(dataBytes);
string hash = Convert.ToBase64String(hashBytes);
return hash;
}
public void Mine(int difficulty)
{
SHA256 sha256 = SHA256.Create();
var leadingZeros = new string('0', difficulty);
string data = GetData();
while (Hash.Substring(0, difficulty) != leadingZeros)
{
Nonce++;
Hash = CalculateHash(data, sha256);
}
}
}
}

87
BasicBlockChain.Core/BlockChain.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
namespace BasicBlockChain.Core
{
public class BlockChain
{
private List<Transaction> _pendingTransactions = new List<Transaction>();
public List<Block> Chain { get; } = new List<Block>();
public int Difficulty { get; set; } = 2;
public int Reward { get; set; } = 1_000_000;
public BlockChain(DateTime? genesisDate = null, int difficulty = 2, int reward = 1_000_000)
{
Block genesisBlock = new Block(genesisDate ?? DateTime.UtcNow, null, null);
genesisBlock.Mine(difficulty);
Difficulty = difficulty;
Reward = 1_000_000;
Chain.Add(genesisBlock);
}
public void AddBlock(DateTime date, IList<Transaction> transactions)
{
Block lastBlock = Chain.Last();
Block newBlock = new Block(date, lastBlock, transactions);
newBlock.Mine(Difficulty);
Chain.Add(newBlock);
}
public void AddTransaction(Transaction transaction)
{
_pendingTransactions.Add(transaction);
}
public void ProcessPendingTransactions(DateTime date, string miner)
{
Block lastBlock = Chain.Last();
Block newBlock = new Block(date, lastBlock, _pendingTransactions);
newBlock.Transactions.Add(new Transaction(null, miner, Reward, date));
newBlock.Mine(Difficulty);
Chain.Add(newBlock);
_pendingTransactions.Clear();
}
public bool Verify()
{
for (int i = 1; i < Chain.Count; i++)
{
Block currentBlock = Chain[i];
Block previousBlock = Chain[i - 1];
string currentBlockHashRecalculated = currentBlock.CalculateHash();
if (currentBlock.Hash != currentBlockHashRecalculated || currentBlock.PreviousHash != previousBlock.Hash)
{
return false;
}
}
return true;
}
public long GetMicroCoinBalance(string receiver)
{
long microCoinBalance = 0;
for (int i = 0; i < Chain.Count; i++)
{
for (int j = 0; j < Chain[i].Transactions.Count; j++)
{
var transaction = Chain[i].Transactions[j];
if (transaction.Sender == receiver)
{
microCoinBalance -= transaction.MicroCoinAmount;
}
if (transaction.Receiver == receiver)
{
microCoinBalance += transaction.MicroCoinAmount;
}
}
}
return microCoinBalance;
}
}
}

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BasicBlockChain.Core/Properties/AssemblyInfo.cs Normal file
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using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
// General Information about an assembly is controlled through the following
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
[assembly: AssemblyTitle("BasicBlockChain.Core")]
[assembly: AssemblyDescription("")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyProduct("BasicBlockChain.Core")]
[assembly: AssemblyCopyright("Copyright © 2020")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
// Setting ComVisible to false makes the types in this assembly not visible
// to COM components. If you need to access a type in this assembly from
// COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible(false)]
// The following GUID is for the ID of the typelib if this project is exposed to COM
[assembly: Guid("919bc116-c8fc-4b65-b742-226b38437c48")]
// Version information for an assembly consists of the following four values:
//
// Major Version
// Minor Version
// Build Number
// Revision
//
// You can specify all the values or you can default the Build and Revision Numbers
// by using the '*' as shown below:
// [assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]

20
BasicBlockChain.Core/Transaction.cs Normal file
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using System;
namespace BasicBlockChain.Core
{
public class Transaction
{
public string Sender { get; set; }
public string Receiver { get; set; }
public long MicroCoinAmount { get; set; }
public DateTime Date { get; set; }
public Transaction(string sender, string receiver, long microCoinAmount, DateTime date)
{
Sender = sender;
Receiver = receiver;
MicroCoinAmount = microCoinAmount;
Date = date;
}
}
}

4
BasicBlockChain.Core/packages.config Normal file
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<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="VAR.Json" version="1.1.1.36534" targetFramework="net48" />
</packages>