Add NuGet CI publishing wiring

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  build-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: |
+            8.0.x
+            9.0.x
+            10.0.x
+
+      - name: Restore
+        run: dotnet restore Ed25519.sln --nologo
+
+      - name: Build
+        run: dotnet build Ed25519.sln --configuration Release --no-restore --nologo
+
+      - name: Test
+        run: dotnet test tests/Ed25519.Tests.csproj --configuration Release --no-build --nologo

.github/workflows/publish-nuget.yml

@@ -0,0 +1,41 @@
+name: Publish NuGet
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: |
+            8.0.x
+            9.0.x
+            10.0.x
+
+      - name: Restore
+        run: dotnet restore Ed25519.sln --nologo
+
+      - name: Build
+        run: dotnet build Ed25519.sln --configuration Release --no-restore --nologo
+
+      - name: Test
+        run: dotnet test tests/Ed25519.Tests.csproj --configuration Release --no-build --nologo
+
+      - name: Pack
+        run: dotnet pack src/Ed25519.csproj --configuration Release --no-build --nologo -o artifacts
+
+      - name: Push to NuGet
+        run: dotnet nuget push artifacts/*.nupkg --api-key "${{ secrets.NUGET_API_KEY }}" --source https://api.nuget.org/v3/index.json --skip-duplicate

README.md

@@ -12,10 +12,14 @@ A pure C# implementation of the Ed25519 digital signature algorithm, ported from
 
 ## Installation
 
+Install from NuGet:
+
 ```bash
-dotnet add package Ed25519
+dotnet add package Dexcompiler.Ed25519
 ```
 
+> Note: This package ID is the canonical package name for this repository. The similarly named `Ed25519` package on NuGet is a different project.
+
 ## Usage
 
 ### Generate a Keypair
@@ -157,6 +161,14 @@ The implementation uses constant-time conditional moves (`CMov`, `CSwap`) to pre
 - **Base point B**: The standard Ed25519 generator
 - **Group order L**: `2²⁵² + 27742317777372353535851937790883648493`
 
+## Maintainer Release Workflow
+
+1. Set `NUGET_API_KEY` in repository secrets.
+2. Update `Version` in `src/Ed25519.csproj` for the intended release.
+3. Push a tag in `vX.Y.Z` format (for example, `v1.0.5`).
+4. GitHub Actions will build, test, pack, and publish `Dexcompiler.Ed25519` with `--skip-duplicate`.
+5. Verify package availability on nuget.org and test `dotnet add package Dexcompiler.Ed25519` in a clean project.
+
 ## License
 
 MIT License

src/Ed25519.csproj

@@ -11,7 +11,7 @@
     <OutputType>Library</OutputType>
 
     <!-- NuGet Package metadata -->
-    <PackageId>Ed25519</PackageId>
+    <PackageId>Dexcompiler.Ed25519</PackageId>
     <Version>1.0.4</Version>
     <Authors>Dexter Ajoku</Authors>
     <Description>Pure C# implementation of Ed25519 digital signatures. RFC 8032 compliant, ported from ref10 reference implementation. Includes PKCS#8/SPKI/PEM key import/export.</Description>