Add initial support for Cosmos.

HDWallet.sln

@@ -71,6 +71,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "HDWallet.Secp256r1.Tests",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HDWallet.Secp256", "src\HDWallet.Secp256\HDWallet.Secp256.csproj", "{86D54B89-447D-4168-8CC9-CE5C09AFFC2F}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HDWallet.Cosmos", "src\HDWallet.Cosmos\HDWallet.Cosmos.csproj", "{6389137E-388B-41A2-B76B-563557303C87}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HDWallet.Cosmos.Tests", "test\HDWallet.Cosmos.Tests\HDWallet.Cosmos.Tests.csproj", "{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -465,6 +469,30 @@ Global
 		{86D54B89-447D-4168-8CC9-CE5C09AFFC2F}.Release|x64.Build.0 = Release|Any CPU
 		{86D54B89-447D-4168-8CC9-CE5C09AFFC2F}.Release|x86.ActiveCfg = Release|Any CPU
 		{86D54B89-447D-4168-8CC9-CE5C09AFFC2F}.Release|x86.Build.0 = Release|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Debug|x64.Build.0 = Debug|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Debug|x86.Build.0 = Debug|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Release|x64.ActiveCfg = Release|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Release|x64.Build.0 = Release|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Release|x86.ActiveCfg = Release|Any CPU
+		{6389137E-388B-41A2-B76B-563557303C87}.Release|x86.Build.0 = Release|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Debug|x64.Build.0 = Debug|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Debug|x86.Build.0 = Debug|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Release|x64.ActiveCfg = Release|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Release|x64.Build.0 = Release|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Release|x86.ActiveCfg = Release|Any CPU
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -502,6 +530,8 @@ Global
 		{96BA746E-2F25-4ED9-AA60-4ECC66903DD0} = {587DF704-BD3F-41FF-A468-289BB83BBEF7}
 		{87F77813-6571-4245-AA71-D22AF0E9CB20} = {73CF8F5A-07F9-477C-8F47-507158E4C68C}
 		{86D54B89-447D-4168-8CC9-CE5C09AFFC2F} = {587DF704-BD3F-41FF-A468-289BB83BBEF7}
+		{6389137E-388B-41A2-B76B-563557303C87} = {587DF704-BD3F-41FF-A468-289BB83BBEF7}
+		{6D1AF7BA-FA9E-4372-B29F-E7DDC0BBAAB9} = {73CF8F5A-07F9-477C-8F47-507158E4C68C}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {A8055563-076B-434F-9578-B8CAA10E458E}

src/HDWallet.Core/CoinType.cs

@@ -15,6 +15,8 @@ public enum CoinType : uint
         FileCoin = 461,
         Solana = 501,
         Blockstack = 5757,
-        Neo = 888
+        Neo = 888,
+        Cosmos = 118,
+        Terra = 330
     }
 }

src/HDWallet.Cosmos/AddressGenerator.cs

@@ -0,0 +1,68 @@
+using System;
+using System.Linq;
+using HDWallet.Core;
+
+namespace HDWallet.Cosmos
+{
+    public class AddressGenerator : IAddressGenerator
+    {
+        string DefaultHRP { get; set; } = "cosmos";
+
+        string IAddressGenerator.GenerateAddress(byte[] pubKeyBytes)
+        {
+            return $"{GetBech32Address(pubKeyBytes, DefaultHRP)}";
+        }
+
+        public string GenerateAddress(byte[] pubKeyBytes, string hrp)
+        {
+            return $"{GetBech32Address(pubKeyBytes, hrp)}";
+        }
+
+        private string GetBech32Address(byte[] pubKeyBytes, string hrp)
+        {
+            var addr = addressFromPublicKey(pubKeyBytes);
+            return Bech32Engine.Encode(hrp, addr);
+        }
+
+        private byte[] addressFromPublicKey(byte[] pubKeyBytes)
+        {
+            if(pubKeyBytes.Length == 65)
+            {
+                throw new NotImplementedException();
+            }
+
+            if(pubKeyBytes.Length == 33)
+            {
+                var sha256 =  NBitcoin.Crypto.Hashes.SHA256(pubKeyBytes);
+                var ripesha = NBitcoin.Crypto.Hashes.RIPEMD160(sha256, sha256.Length);
+                return ripesha;
+            }
+
+            throw new NotSupportedException();
+        }
+
+        public string GetBech32PublicKey(byte[] pubKeyBytes, string hrp)
+        {
+            var rawPubKey = pubKeyFromPublicKey(pubKeyBytes);
+            return Bech32Engine.Encode(hrp, rawPubKey);
+        }
+
+        // See: https://github.com/tendermint/tendermint/blob/d419fffe18531317c28c29a292ad7d253f6cafdf/docs/spec/blockchain/encoding.md#public-key-cryptography
+        const string BECH32_PUBKEY_DATA_PREFIX = "eb5ae98721";
+
+        private byte[] pubKeyFromPublicKey(byte[] pubKeyBytes)
+        {
+            var buffer = HexStringToByteArray(BECH32_PUBKEY_DATA_PREFIX);
+            var combined = buffer.Concat(pubKeyBytes).ToArray();
+            return combined;
+        }
+
+        public static byte[] HexStringToByteArray(string hex)
+        {
+            return Enumerable.Range(0, hex.Length)
+                .Where(x => x % 2 == 0)
+                .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
+                .ToArray();
+        }
+    }
+}

src/HDWallet.Cosmos/CosmosHDWalletSecp256k1.cs

@@ -0,0 +1,27 @@
+using HDWallet.Core;
+using HDWallet.Secp256k1;
+
+namespace HDWallet.Cosmos
+{
+    public class CosmosHDWalletSecp256k1 : HDWallet<CosmosWallet>
+    {
+        private static readonly HDWallet.Core.CoinPath _path = Purpose.Create(PurposeNumber.BIP44).Coin(CoinType.Cosmos);
+
+        public CosmosHDWalletSecp256k1(string words, string seedPassword = "") : base(words, seedPassword, _path) { }
+
+        public CosmosHDWalletSecp256k1(CoinType coinType, string words, string seedPassword = "")
+            : base(words, seedPassword, Purpose.Create(PurposeNumber.BIP44).Coin(coinType)) { }
+
+        /// <summary>
+        /// Generates Account from master. Doesn't derive new path by accountIndexInfo
+        /// </summary>
+        /// <param name="accountMasterKey">Used to generate wallet</param>
+        /// <param name="accountIndexInfo">Used only to store information</param>
+        /// <returns></returns>
+        public static IAccount<CosmosWallet> GetAccountFromMasterKey(string accountMasterKey, uint accountIndexInfo)
+        {
+            IAccountHDWallet<CosmosWallet> accountHDWallet = new AccountHDWallet<CosmosWallet>(accountMasterKey, accountIndexInfo);
+            return accountHDWallet.Account;
+        }
+    }
+}

src/HDWallet.Cosmos/CosmosWallet.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Linq;
+using System.Text;
+using HDWallet.Core;
+using HDWallet.Secp256k1;
+using NBitcoin;
+using NBitcoin.DataEncoders;
+
+namespace HDWallet.Cosmos
+{
+    public class CosmosWallet : Wallet, IWallet
+    {
+        public CosmosWallet() { }
+
+        public CosmosWallet(string privateKey) : base(privateKey) { }
+
+        protected override IAddressGenerator GetAddressGenerator()
+        {
+            return new AddressGenerator();
+        }
+
+        public string GetAddress(string hrp)
+        {
+            return new AddressGenerator().GenerateAddress(PublicKey.ToBytes(), hrp);
+        }
+
+        public string GetPublicKey(string hrp)
+        {
+            return new AddressGenerator().GetBech32PublicKey(PublicKey.ToBytes(), hrp);
+        }
+    }
+}

src/HDWallet.Cosmos/HDWallet.Cosmos.csproj

@@ -0,0 +1,35 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+
+    <Title></Title>
+    <Description></Description>
+    <Version>0.1.1</Version>
+
+    <RepositoryType>git</RepositoryType>
+    <RepositoryUrl>https://github.com/farukterzioglu/HDWallet</RepositoryUrl>
+    <PackageProjectUrl>https://github.com/farukterzioglu/HDWallet</PackageProjectUrl>
+
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <PackageTags>HDWallet;Cosmos;Blockchain;Secp256k1</PackageTags>
+    <PackageId>HDWallet.Cosmos</PackageId>
+
+    <Authors>Faruk Terzioglu</Authors>
+    <Company></Company>
+
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Base58Check" Version="0.2.0" />
+    <PackageReference Include="Nethereum.Web3" Version="3.8.0" />
+    <PackageReference Include="Konscious.Security.Cryptography.Blake2" Version="1.0.9" />
+    <PackageReference Include="NBitcoin.Secp256k1" Version="1.0.1" />
+    <PackageReference Include="NBitcoin" Version="5.0.27" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\HDWallet.Secp256k1\HDWallet.Secp256k1.csproj" />
+  </ItemGroup>
+
+</Project>

src/HDWallet.Cosmos/README.md

@@ -0,0 +1 @@
+### 

test/HDWallet.Cosmos.Tests/GenerateWallet.cs

@@ -0,0 +1,22 @@
+using System;
+using HDWallet.Core;
+using NUnit.Framework;
+
+namespace HDWallet.Cosmos.Tests
+{
+    public class GenerateWallet
+    {
+
+        [Test]
+        public void ShouldGenerateWalletFromMnemonic()
+        {
+            IHDWallet<CosmosWallet> cosmosHDWallet = new CosmosHDWalletSecp256k1(CoinType.Terra, "social laugh lecture orchard mind spend soap window hidden donor machine moment sketch own desk omit tag hold gaze name parade fly main obtain");
+            var account0 = cosmosHDWallet.GetAccount(0);
+            CosmosWallet wallet0 = account0.GetExternalWallet(0);
+            Assert.AreEqual("02b6465822d1fe2b27a10cbfd65f3e577517605b3df02152fa31e1f4994844a619", wallet0.PublicKey.ToHex());
+            Assert.AreEqual("b13443590343bdce4043f8442dce3831e758a0949d9fc5cf03d5cfc4058b1452", wallet0.PrivateKey.ToHex());
+            Assert.AreEqual("terra1av8hsx3wt8xnw9ksxtjvlywsa6yl4ghw2lth7x",wallet0.GetAddress("terra") );
+            var accountPublicKey = wallet0.GetPublicKey("terrapub");
+        }
+    }
+}

test/HDWallet.Cosmos.Tests/HDWallet.Cosmos.Tests.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\HDWallet.Cosmos\HDWallet.Cosmos.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="nunit" Version="3.13.2" />
+    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
+  </ItemGroup>
+
+</Project>