Migrate to .NET 9 and temporarily remove other frameworks support

.editorconfig

@@ -12,29 +12,29 @@ charset = utf-8-bom
 
 [*.{cs,vb}]
 dotnet_sort_system_directives_first = true
-dotnet_style_qualification_for_field = false:silent
-dotnet_style_qualification_for_property = false:silent
-dotnet_style_qualification_for_method = false:silent
-dotnet_style_qualification_for_event = false:silent
-dotnet_style_predefined_type_for_locals_parameters_members = true:silent
-dotnet_style_predefined_type_for_member_access = true:silent
-dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity:silent
-dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:silent
-dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:silent
-dotnet_style_parentheses_in_other_operators = never_if_unnecessary:silent
-dotnet_style_require_accessibility_modifiers = for_non_interface_members:silent
+dotnet_style_qualification_for_field = false:none
+dotnet_style_qualification_for_property = false:none
+dotnet_style_qualification_for_method = false:none
+dotnet_style_qualification_for_event = false:none
+dotnet_style_predefined_type_for_locals_parameters_members = true:none
+dotnet_style_predefined_type_for_member_access = true:none
+dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity:none
+dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:none
+dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:none
+dotnet_style_parentheses_in_other_operators = never_if_unnecessary:none
+dotnet_style_require_accessibility_modifiers = for_non_interface_members:none
 dotnet_style_readonly_field = true:suggestion
 dotnet_style_object_initializer = true:suggestion
 dotnet_style_collection_initializer = true:suggestion
 dotnet_style_explicit_tuple_names = true:suggestion
 dotnet_style_null_propagation = true:suggestion
 dotnet_style_coalesce_expression = true:suggestion
-dotnet_style_prefer_is_null_check_over_reference_equality_method = true:silent
+dotnet_style_prefer_is_null_check_over_reference_equality_method = true:none
 dotnet_style_prefer_inferred_tuple_names = true:suggestion
 dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion
-dotnet_style_prefer_auto_properties = true:silent
-dotnet_style_prefer_conditional_expression_over_assignment = true:silent
-dotnet_style_prefer_conditional_expression_over_return = true:silent
+dotnet_style_prefer_auto_properties = true:none
+dotnet_style_prefer_conditional_expression_over_assignment = true:none
+dotnet_style_prefer_conditional_expression_over_return = true:none
 dotnet_naming_style.pascal_case_style.capitalization = pascal_case
 dotnet_naming_style.camel_case_style.capitalization = camel_case
 dotnet_naming_style.camel_case_underscore_style.capitalization = camel_case
@@ -72,21 +72,21 @@ dotnet_naming_symbols.private_fields.applicable_kinds = field
 dotnet_naming_symbols.private_fields.applicable_accessibilities = private
 
 [*.cs]
-csharp_style_var_for_built_in_types = true:silent
-csharp_style_var_when_type_is_apparent = true:silent
-csharp_style_var_elsewhere = true:silent
-csharp_style_expression_bodied_methods = false:silent
-csharp_style_expression_bodied_constructors = false:silent
-csharp_style_expression_bodied_operators = false:silent
-csharp_style_expression_bodied_properties = true:silent
-csharp_style_expression_bodied_indexers = true:silent
-csharp_style_expression_bodied_accessors = true:silent
+csharp_style_var_for_built_in_types = true:none
+csharp_style_var_when_type_is_apparent = true:none
+csharp_style_var_elsewhere = true:none
+csharp_style_expression_bodied_methods = false:none
+csharp_style_expression_bodied_constructors = false:none
+csharp_style_expression_bodied_operators = false:none
+csharp_style_expression_bodied_properties = true:none
+csharp_style_expression_bodied_indexers = true:none
+csharp_style_expression_bodied_accessors = true:none
 csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
 csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
 csharp_style_throw_expression = true:suggestion
 csharp_style_conditional_delegate_call = true:suggestion
 csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async:suggestion
-csharp_prefer_braces = false:silent
+csharp_prefer_braces = false:none
 csharp_style_deconstructed_variable_declaration = true:suggestion
 csharp_prefer_simple_default_expression = true:suggestion
 csharp_style_pattern_local_over_anonymous_function = true:suggestion
@@ -114,6 +114,9 @@ csharp_space_between_method_call_name_and_opening_parenthesis = false
 csharp_space_between_method_call_empty_parameter_list_parentheses = false
 csharp_preserve_single_line_statements = true
 csharp_preserve_single_line_blocks = true
+csharp_style_namespace_declarations = file_scoped
+csharp_using_directive_placement = outside_namespace:none
+csharp_style_prefer_range_operator = false:none
 
 [*.vb]
 visual_basic_preferred_modifier_order = Partial,Default,Private,Protected,Public,Friend,NotOverridable,Overridable,MustOverride,Overloads,Overrides,MustInherit,NotInheritable,Static,Shared,Shadows,ReadOnly,WriteOnly,Dim,Const,WithEvents,Widening,Narrowing,Custom,Async:suggestion

.github/workflows/dotnet.yml

@@ -16,10 +16,10 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v2
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
     - name: Restore dependencies
       run: dotnet restore
     - name: Build
       run: dotnet build --no-restore -c Release
     - name: Test
-      run: dotnet test --no-build --verbosity normal -c Release -f net8.0
+      run: dotnet test --no-build --verbosity normal -c Release -f net9.0

Directory.Build.props

@@ -12,13 +12,6 @@
     <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)Key.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="4.11.0">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
-  </ItemGroup>
-
   <ItemGroup>
     <Using Include="System.Security.Cryptography" />
   </ItemGroup>

benchmarks/OpenGost.Security.Cryptography.Benchmarks/OpenGost.Security.Cryptography.Benchmarks.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net48;net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net9.0</TargetFrameworks>
     <OutputType>Exe</OutputType>
   </PropertyGroup>
 

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.100",
+    "version": "9.0.100",
     "rollForward": "latestMinor"
   }
 }

src/Directory.Build.props

@@ -5,7 +5,6 @@
   <PropertyGroup>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <WarningLevel>7</WarningLevel>
     <IsPackable>true</IsPackable>
     <IncludeSymbols>true</IncludeSymbols>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
@@ -17,7 +16,7 @@
     <AnalysisLevel>latest-all</AnalysisLevel>
     <EnforceCodeStyleInBuild>true</EnforceCodeStyleInBuild>
     <EnableNETAnalyzers>true</EnableNETAnalyzers>
-    <NoWarn>$(NoWarn);CA1508;CA1859;CA5358;NU1903;SYSLIB0045</NoWarn>
+    <NoWarn>$(NoWarn);CA5358;SYSLIB0045</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>

src/OpenGost.Security.Cryptography/CMAC.cs

@@ -10,22 +10,20 @@ namespace OpenGost.Security.Cryptography;
 [ComVisible(true)]
 public abstract class CMAC : KeyedHashAlgorithm
 {
-    private static readonly IReadOnlyDictionary<int, byte[]> _irreduciblePolynomials = new Dictionary<int, byte[]>
-    {
-        [64] =
+    private static readonly byte[]
+        _irreduciblePolynomial64 =
         [
             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1B
         ],
-        [128] =
+        _irreduciblePolynomial128 =
         [
             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x87
         ],
-        [256] =
+        _irreduciblePolynomial256 =
         [
             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x25
-        ],
-    };
+        ];
 
     private SymmetricAlgorithm _symmetricAlgorithm = null!;
     private ICryptoTransform? _encryptor;
@@ -58,12 +56,8 @@ public override byte[] Key
         get => (byte[])KeyValue.Clone();
         set
         {
-#if NET6_0_OR_GREATER
             ArgumentNullException.ThrowIfNull(value);
-#else
-            if (value is null)
-                throw new ArgumentNullException(nameof(value));
-#endif
+
             if (_hashing)
                 throw new CryptographicException(CryptographyStrings.CryptographicSymmetricAlgorithmKeySet);
 
@@ -170,19 +164,19 @@ protected override void HashCore(byte[] array, int ibStart, int cbSize)
             Buffer.BlockCopy(array, ibStart, _buffer, _bufferLength, bytesToCopy);
             ibStart += bytesToCopy;
             cbSize -= bytesToCopy;
-            _encryptor!.TransformBlock(_buffer, 0, _bytesPerBlock, _temp, 0);
+            _ = _encryptor!.TransformBlock(_buffer, 0, _bytesPerBlock, _temp, 0);
             _bufferLength = 0;
         }
 
         if (cbSize >= _bytesPerBlock && _bufferLength == _bytesPerBlock)
         {
-            _encryptor!.TransformBlock(_buffer, 0, _bytesPerBlock, _temp, 0);
+            _ = _encryptor!.TransformBlock(_buffer, 0, _bytesPerBlock, _temp, 0);
             _bufferLength = 0;
         }
 
         while (cbSize > _bytesPerBlock)
         {
-            _encryptor!.TransformBlock(array, ibStart, _bytesPerBlock, _temp, 0);
+            _ = _encryptor!.TransformBlock(array, ibStart, _bytesPerBlock, _temp, 0);
             ibStart += _bytesPerBlock;
             cbSize -= _bytesPerBlock;
         }
@@ -242,17 +236,18 @@ protected override void Dispose(bool disposing)
         base.Dispose(disposing);
     }
 
-    #region Creation factory methods
-
     /// <summary>
     /// Creates an instance of the default implementation of <see cref="CMAC"/> algorithm.
     /// </summary>
     /// <returns>
     /// A new instance of <see cref="CMAC"/>.
     /// </returns>
     [ComVisible(false)]
+    [Obsolete(Obsoletions.DefaultCryptoAlgorithmsMessage,
+        DiagnosticId = Obsoletions.DefaultCryptoAlgorithmsDiagId,
+        UrlFormat = Obsoletions.SharedUrlFormat)]
     public static new CMAC Create()
-        => Create(CryptoConstants.CMACGrasshopperAlgorithmName);
+        => new CMACGrasshopper();
 
     /// <summary>
     /// Creates an instance of a specified implementation of <see cref="CMAC"/> algorithm.
@@ -267,8 +262,6 @@ protected override void Dispose(bool disposing)
     public static new CMAC Create(string algorithmName)
         => (CMAC)CryptoConfig.CreateFromName(algorithmName)!;
 
-    #endregion
-
     private void EnsureEncryptorInitialized()
     {
         if (_encryptor is null)
@@ -319,9 +312,12 @@ private static void LeftShiftLittleEndianOneBit(byte[] data)
 
     private static byte[] GetIrreduciblePolynomial(int blockSize)
     {
-        if (_irreduciblePolynomials.TryGetValue(blockSize, out var result))
-            return result;
-
-        throw new CryptographicException(CryptographyStrings.CryptographicInvalidBlockSize);
+        return blockSize switch
+        {
+            64 => _irreduciblePolynomial64,
+            128 => _irreduciblePolynomial128,
+            256 => _irreduciblePolynomial256,
+            _ => throw new CryptographicException(CryptographyStrings.CryptographicInvalidBlockSize),
+        };
     }
 }

src/OpenGost.Security.Cryptography/ECCurveOidMap.cs

@@ -453,23 +453,15 @@ private static IReadOnlyDictionary<string, ECCurve> ECCurveOidDictionary
 
     public static bool OidValueRegistered(string oidValue)
     {
-#if NET6_0_OR_GREATER
         ArgumentNullException.ThrowIfNull(oidValue);
-#else
-            if (oidValue is null)
-                throw new ArgumentNullException(nameof(oidValue));
-#endif
+
         return ECCurveOidDictionary.ContainsKey(oidValue);
     }
 
     public static ECCurve GetExplicitCurveByOid(string oidValue)
     {
-#if NET6_0_OR_GREATER
         ArgumentNullException.ThrowIfNull(oidValue);
-#else
-            if (oidValue is null)
-                throw new ArgumentNullException(nameof(oidValue));
-#endif
+
         if (!ECCurveOidDictionary.ContainsKey(oidValue))
             throw new NotImplementedException();
 

src/OpenGost.Security.Cryptography/GostECDsa.cs

@@ -27,8 +27,6 @@ protected GostECDsa()
         KeySizeValue = 512;
     }
 
-    #region Creation factory methods
-
     /// <summary>
     /// Creates an instance of the default implementation of <see cref="GostECDsa"/> algorithm.
     /// </summary>
@@ -37,20 +35,5 @@ protected GostECDsa()
     /// </returns>
     [ComVisible(false)]
     public static new GostECDsa Create()
-        => Create(CryptoConstants.GostECDsaAlgorithmName);
-
-    /// <summary>
-    /// Creates an instance of a specified implementation of <see cref="GostECDsa"/> algorithm.
-    /// </summary>
-    /// <param name="algorithmName">
-    /// The name of the specific implementation of <see cref="GostECDsa"/> to be used.
-    /// </param>
-    /// <returns>
-    /// A new instance of <see cref="GostECDsa"/> using the specified implementation.
-    /// </returns>
-    [ComVisible(false)]
-    public static new GostECDsa Create(string algorithmName)
-        => (GostECDsa)CryptoConfig.CreateFromName(algorithmName)!;
-
-    #endregion
+        => new GostECDsaManaged();
 }

src/OpenGost.Security.Cryptography/GostECDsaCertificateExtensions.cs

@@ -3,7 +3,9 @@
 using OpenGost.Security.Cryptography.Asn1;
 using OpenGost.Security.Cryptography.Properties;
 
+#pragma warning disable IDE0130
 namespace System.Security.Cryptography.X509Certificates;
+#pragma warning restore IDE0130
 
 using static CryptoConstants;
 
@@ -32,12 +34,7 @@ public static class GostECDsaCertificateExtensions
     /// </exception>
     public static GostECDsa? GetGostECDsaPublicKey(this X509Certificate2 certificate)
     {
-#if NET6_0_OR_GREATER
         ArgumentNullException.ThrowIfNull(certificate);
-#else
-            if (certificate is null)
-                throw new ArgumentNullException(nameof(certificate));
-#endif
 
         if (!IsGostECDsa(certificate))
             return null;
@@ -87,7 +84,7 @@ public static class GostECDsaCertificateExtensions
     private static bool IsGostECDsa(X509Certificate2 certificate)
     {
         var value = certificate.PublicKey.Oid.Value;
-        if (value != GostECDsa256OidValue && value != GostECDsa512OidValue)
+        if (value is not GostECDsa256OidValue and not GostECDsa512OidValue)
             return false;
 
         foreach (var extension in certificate.Extensions)