Native BLS Signature Verification

.gitignore

@@ -360,4 +360,6 @@ launchSettings.json
 /dist
 
 # Secret test files
-test_SessionIdentity.json
+test_SessionIdentity.json
+
+.mono/

ICP.sln

@@ -47,7 +47,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "EdjCase.ICP.WebSockets", "s
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Sample.WebSockets", "samples\Sample.WebSockets\Sample.WebSockets.csproj", "{B4F9E828-BC3D-4EFF-9E21-53DD82928AB0}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WebSockets.Tests", "test\WebSockets.Tests\WebSockets.Tests.csproj", "{3015AFBC-B866-459F-B25C-4BEA00C2A91E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "WebSockets.Tests", "test\WebSockets.Tests\WebSockets.Tests.csproj", "{3015AFBC-B866-459F-B25C-4BEA00C2A91E}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BLS.Tests", "test\BLS.Tests\BLS.Tests.csproj", "{213F30BA-D147-4291-93A3-13A8A006126D}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -111,6 +113,10 @@ Global
 		{3015AFBC-B866-459F-B25C-4BEA00C2A91E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{3015AFBC-B866-459F-B25C-4BEA00C2A91E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{3015AFBC-B866-459F-B25C-4BEA00C2A91E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{213F30BA-D147-4291-93A3-13A8A006126D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{213F30BA-D147-4291-93A3-13A8A006126D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{213F30BA-D147-4291-93A3-13A8A006126D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{213F30BA-D147-4291-93A3-13A8A006126D}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -126,6 +132,7 @@ Global
 		{94023B5A-0650-4E67-A685-D1C979DA717F} = {9A64FA9E-AC6C-4C1F-B648-E9E64F172EA8}
 		{B4F9E828-BC3D-4EFF-9E21-53DD82928AB0} = {7FADA9D9-5FDA-4CFB-8A53-A578A61FBBA9}
 		{3015AFBC-B866-459F-B25C-4BEA00C2A91E} = {F71B8320-C279-4A79-A8D4-4039DB39D522}
+		{213F30BA-D147-4291-93A3-13A8A006126D} = {F71B8320-C279-4A79-A8D4-4039DB39D522}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {3103E11A-E792-49EE-98C5-B2F3709DB088}

README.md

@@ -141,4 +141,4 @@ public enum MyVariantTag
 - [IC Http Interface Spec](https://smartcontracts.org/docs/current/references/ic-interface-spec)
 - [Candid Spec](https://github.com/dfinity/candid/blob/master/spec/Candid.md)
 - [Candid Decoder](https://fxa77-fiaaa-aaaae-aaana-cai.raw.ic0.app/explain)
-- [Candid UI Tester](https://a4gq6-oaaaa-aaaab-qaa4q-cai.raw.ic0.app)
+- [Candid UI Tester](https://a4gq6-oaaaa-aaaab-qaa4q-cai.raw.ic0.app)

UnityAssets/WebGlBlsCryptography.cs

@@ -9,19 +9,46 @@
 using UnityEngine;
 using UnityEngine.Networking;
 
-#if UNITY_WEBGL
+#if UNITY_WEBGL && !UNITY_EDITOR
 public class WebGlBlsCryptography : IBlsCryptography
 {
     public bool VerifySignature(byte[] publicKey, byte[] messageHash, byte[] signature)
     {
-        return BrowserBlsLib.VerifySignature(publicKey, messageHash, signature);
+        string publicKeyHex = ToHexString(publicKey);
+        string messageHashHex = ToHexString(messageHash);
+        string signatureHex = ToHexString(signature);
+        return BrowserBlsLib.VerifySignature(publicKeyHex, messageHashHex, signatureHex);
+    }
+
+    public static string ToHexString(byte[] bytes)
+    {
+        char[] stringValue = new char[bytes.Length * 2];
+        int i = 0;
+        foreach (byte b in bytes)
+        {
+            int charIndex = i++ * 2;
+            int quotient = Math.DivRem(b, 16, out int remainder);
+            stringValue[charIndex] = GetChar(quotient);
+            stringValue[charIndex + 1] = GetChar(remainder);
+        }
+
+        return new string(stringValue); // returns: "48656C6C6F20776F726C64" for "Hello world"
+
+    }
+    private static char GetChar(int value)
+    {
+        if (value < 10)
+        {
+            return (char)(value + 48); // 0->9
+        }
+        return (char)(value + 65 - 10); // A->F ASCII
     }
 }
 
 internal static class BrowserBlsLib
 {
     [DllImport("__Internal")]
-    public static extern bool VerifySignature(byte[] publicKey, byte[] messageHash, byte[] signature);
+    public static extern bool VerifySignature(string publicKeyHex, string messageHashHex, string signatureHex);
 }
 #endif
 

samples/Sample.CLI/Program.cs

@@ -15,6 +15,10 @@
 using EdjCase.ICP.Agent.Standards.AssetCanister;
 using System.Text;
 using EdjCase.ICP.Agent.Standards.AssetCanister.Models;
+using EdjCase.ICP.BLS;
+using EdjCase.ICP.Candid.Utilities;
+using EdjCase.ICP.BLS.Models;
+using System.Diagnostics;
 
 public class Program
 {
@@ -182,7 +186,7 @@ string filePath
 			try
 			{
 				contentStream = File.OpenRead(filePath);
-			
+
 				await client.UploadAssetChunkedAsync(
 						key: key,
 						contentType: contentType,

src/Agent/Agents/HttpAgent.cs

@@ -48,7 +48,7 @@ public HttpAgent(
 		{
 			this.Identity = identity;
 			this.httpClient = httpClient ?? throw new ArgumentNullException(nameof(httpClient));
-			this.bls = bls ?? new WasmBlsCryptography();
+			this.bls = bls ?? new DefaultBlsCryptograhy();
 		}
 
 		/// <param name="identity">Optional. Identity to use for each request. If unspecified, will use anonymous identity</param>
@@ -65,7 +65,7 @@ public HttpAgent(
 			{
 				BaseAddress = httpBoundryNodeUrl ?? new Uri("https://ic0.app/")
 			});
-			this.bls = bls ?? new WasmBlsCryptography();
+			this.bls = bls ?? new DefaultBlsCryptograhy();
 		}
 
 

src/Agent/README.md

@@ -40,7 +40,7 @@ IAgent agent = new HttpAgent();
 // Create Candid arg to send in request
 ulong proposalId = 1234;
 CandidArg arg = CandidArg.FromCandid(
-    CandidTypedValue.FromObject(proposalId) // Conversion can be C# or custom types
+	CandidTypedValue.FromObject(proposalId) // Conversion can be C# or custom types
 );
 
 // Make request to IC
@@ -89,19 +89,19 @@ string name = await client.Name();
 // Get the balance of a specific account
 Account account = new Account
 {
-    Id = Principal.FromText("<account_id>")
+	Id = Principal.FromText("<account_id>")
 };
 UnboundedUInt balance = await client.BalanceOf(account);
 
 // Transfer tokens from one account to another
 TransferArgs transferArgs = new TransferArgs
 {
-    To = new Account
-    {
-        Id = Principal.FromText("<to_account_id>")
-    },
-    Amount = 1,
-    Memo = "<memo>"
+	To = new Account
+	{
+		Id = Principal.FromText("<to_account_id>")
+	},
+	Amount = 1,
+	Memo = "<memo>"
 };
 TransferResult transferResult = await client.Transfer(transferArgs);
 ```
@@ -172,18 +172,7 @@ var delegatedIdentity = new DelegationIdentity(innerIdentity, chain);
 Due to how WebGL works by converting C# to JS/WASM using IL2CPP there are a few additional steps to avoid
 incompatibilities. 
 - UnityHttpClient - The .NET `HttpClient` does not work in many cases, so `UnityHttpClient` is added via Unity C# script.
-    ```cs
-    var client = new UnityHttpClient();
-    var agent = new HttpAgent(client);
-    ```
-- WebGlBlsCryptography - The BLS signature verification relies on a 3rd party library and due to that library not being directly compatible with the WebGL builds, `WebGlBlsCryptography` needs to be used instead of the default `WasmBlsCryptography` class.
-
-    ```cs
-    var bls = new WebGlBlsCrytography();
-    var agent = new HttpAgent(client, bls: bls);
-    ```
-    In addition, the `noble-curves.js` file located [HERE](`https://github.com/paulmillr/noble-curves/releases/tag/1.2.0`) needs to be included in the Unity project and referenced by the HTML page
-    ```html
-    <script src="{path_to_dir}/noble-curves.js"/>
-    ```
-    That will load in the JS bls library that will be referenced by the `Bls.jslib` that is included in the ICP.NET unity package
+	```cs
+	var client = new UnityHttpClient();
+	var agent = new HttpAgent(client);
+	```