diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index f628112..0d18be5 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -13,14 +13,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
-      - name: Write SNK file
-        shell: pwsh
-        run: |
-          $env:SNK_BASE64 -split ' ' -join "`n" | Out-File -Encoding utf8 ./SharpToken/keypair.snk.base64.txt
-          certutil -decode ./SharpToken/keypair.snk.base64.txt ./SharpToken/keypair.snk
-        env:
-          SNK_BASE64: ${{ secrets.SNK_BASE64 }}
-
       - name: Setup .NET
         uses: actions/setup-dotnet@v1
         with:
diff --git a/.github/workflows/build-test-and-publish.yml b/.github/workflows/build-test-and-publish.yml
index df774d1..dd32fca 100644
--- a/.github/workflows/build-test-and-publish.yml
+++ b/.github/workflows/build-test-and-publish.yml
@@ -13,14 +13,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
-      - name: Write SNK file
-        shell: pwsh
-        run: |
-          $env:SNK_BASE64 -split ' ' -join "`n" | Out-File -Encoding utf8 ./SharpToken/keypair.snk.base64.txt
-          certutil -decode ./SharpToken/keypair.snk.base64.txt ./SharpToken/keypair.snk
-        env:
-          SNK_BASE64: ${{ secrets.SNK_BASE64 }}
-
       - name: Setup .NET
         uses: actions/setup-dotnet@v1
         with:
@@ -37,7 +29,7 @@ jobs:
         run: dotnet restore
 
       - name: Build
-        run: dotnet build --configuration Release --no-restore
+        run: dotnet build --configuration Release --no-restore /p:EnableSigning=true
 
       - name: Test
         run: dotnet test --no-restore --verbosity normal
diff --git a/README.md b/README.md
index 3375bb7..4a8bf6b 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,34 @@ var p50kEditEncoding = GptEncoding.GetEncoding("p50k_edit");
 var cl100kBaseEncoding = GptEncoding.GetEncoding("cl100k_base");
 ```
 
+### Model Prefix Matching
+
+Apart from specifying direct model names, SharpToken also provides functionality to map model names based on specific prefixes. This allows users to retrieve an encoding based on a model's prefix.
+
+Here are the current supported prefixes and their corresponding encodings:
+
+| Model Prefix        | Encoding   |
+|---------------------|------------|
+| `gpt-4-`            | `cl100k_base` |
+| `gpt-3.5-turbo-`    | `cl100k_base` |
+| `gpt-35-turbo`      | `cl100k_base` |
+
+Examples of model names that fall under these prefixes include:
+- For the prefix `gpt-4-`: `gpt-4-0314`, `gpt-4-32k`, etc.
+- For the prefix `gpt-3.5-turbo-`: `gpt-3.5-turbo-0301`, `gpt-3.5-turbo-0401`, etc.
+- For the Azure deployment name `gpt-35-turbo`.
+
+To retrieve the encoding name based on a model name or its prefix, you can use the `GetEncodingNameForModel` method:
+
+```csharp
+string encodingName = GetEncodingNameForModel("gpt-4-0314");  // This will return "cl100k_base"
+```
+
+If the provided model name doesn't match any direct model names or prefixes, the method will return `null`.
+
+
+
+
 ## Understanding Encoded Values
 
 When you encode a string using the Encode method, the returned value is a list of integers that represent tokens in the
diff --git a/SharpToken/SharpToken.csproj b/SharpToken/SharpToken.csproj
index e8fc047..6c172ce 100644
--- a/SharpToken/SharpToken.csproj
+++ b/SharpToken/SharpToken.csproj
@@ -12,12 +12,12 @@
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
-
   <PropertyGroup>
     <KeyFilePath>keypair.snk</KeyFilePath>
+    <EnableSigning>false</EnableSigning>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(Configuration)' == 'Release'">
+  <PropertyGroup Condition="'$(Configuration)' == 'Release' AND '$(EnableSigning)' == 'true'">
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>$(KeyFilePath)</AssemblyOriginatorKeyFile>
   </PropertyGroup>