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AssemblyName.SetPublicKeyToken 方法

设置公钥标记,该标记为应用程序或程序集签名时所用公钥的 SHA-1 哈希值的最后 8 个字节。

命名空间:  System.Reflection
程序集:  mscorlib(在 mscorlib.dll 中)

public void SetPublicKeyToken(
	byte[] publicKeyToken
)

参数

publicKeyToken
类型:System.Byte[]
字节数组,包含程序集的公钥标记。

当通过调用 SetPublicKey 方法设置公钥时,还必须使用 SetPublicKeyToken 方法来提供公钥标记。 否则,调用 GetPublicKey 方法时将引发 SecurityException

下面的示例发出了一个动态程序集并将其保存到当前目录。 创建程序集后,SetPublicKeyToken 方法用于设置程序集的公钥标记。 GetPublicKeyToken 方法随后用于检索该公钥标记,它显示在控制台中。


using System;
using System.Reflection;
using System.Threading;
using System.IO;
using System.Globalization;
using System.Reflection.Emit;
using System.Configuration.Assemblies;
using System.Text;

public class AssemblyName_CodeBase
{
   public static void MakeAssembly(AssemblyName myAssemblyName, string fileName)
   {
      // Get the assembly builder from the application domain associated with the current thread.
      AssemblyBuilder myAssemblyBuilder = Thread.GetDomain().DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.RunAndSave);
      // Create a dynamic module in the assembly.
      ModuleBuilder myModuleBuilder = myAssemblyBuilder.DefineDynamicModule("MyModule", fileName);
      // Create a type in the module.
      TypeBuilder myTypeBuilder = myModuleBuilder.DefineType("MyType");
      // Create a method called 'Main'.
      MethodBuilder myMethodBuilder = myTypeBuilder.DefineMethod("Main", MethodAttributes.Public | MethodAttributes.HideBySig |
         MethodAttributes.Static, typeof(void), null);
      // Get the Intermediate Language generator for the method.
      ILGenerator myILGenerator = myMethodBuilder.GetILGenerator();
      // Use the utility method to generate the IL instructions that print a string to the console.
      myILGenerator.EmitWriteLine("Hello World!");
      // Generate the 'ret' IL instruction.
      myILGenerator.Emit(OpCodes.Ret);
      // End the creation of the type.
      myTypeBuilder.CreateType();
      // Set the method with name 'Main' as the entry point in the assembly.
      myAssemblyBuilder.SetEntryPoint(myMethodBuilder);
      myAssemblyBuilder.Save(fileName);
   }

   public static void Main()
   {
      // Create a dynamic assembly with name 'MyAssembly' and build version '1.0.0.2001'.
      AssemblyName myAssemblyName = new AssemblyName();
      // Set the codebase to the physical directory were the assembly resides.
      myAssemblyName.CodeBase = Directory.GetCurrentDirectory();
      // Set the culture information of the assembly to 'English-American'.
      myAssemblyName.CultureInfo = new CultureInfo("en-US");
      // Set the hash algoritm to 'SHA1'.
      myAssemblyName.HashAlgorithm = AssemblyHashAlgorithm.SHA1;
      myAssemblyName.VersionCompatibility = AssemblyVersionCompatibility.SameProcess;
      myAssemblyName.Flags = AssemblyNameFlags.PublicKey;
      // Get the whole contents of the 'PublicKey.snk' into a byte array.
      FileStream publicKeyStream = File.Open("PublicKey.snk", FileMode.Open);
      byte[] publicKey = new byte[publicKeyStream.Length];
      publicKeyStream.Read(publicKey, 0, (int)publicKeyStream.Length);
      // Provide the assembly with a public key.
      myAssemblyName.SetPublicKey(publicKey);
      // Get the whole contents of the 'PublicKeyToken.snk' into a byte array.
      FileStream publicKeyTokenStream = File.Open("PublicKeyToken.snk", FileMode.Open);
      byte[] publicKeyToken = new Byte[publicKeyTokenStream.Length];
      publicKeyTokenStream.Read(publicKeyToken, 0, (int)publicKeyToken.Length);
      // Provide the assembly with a public key token.
      myAssemblyName.SetPublicKeyToken(publicKeyToken);
      myAssemblyName.Name = "MyAssembly";
      myAssemblyName.Version = new Version("1.0.0.2001");
      MakeAssembly(myAssemblyName, "MyAssembly.exe");

      // Get the assemblies loaded in the current application domain.
      Assembly[] myAssemblies = Thread.GetDomain().GetAssemblies();

      // Get the dynamic assembly named 'MyAssembly'. 
      Assembly myAssembly = null;
      for(int i = 0; i < myAssemblies.Length; i++)
         if(String.Compare(myAssemblies[i].GetName().Name, "MyAssembly") == 0)
            myAssembly = myAssemblies[i];

      // Display the full assembly information to the console.
      if(myAssembly != null)
      {
         Console.WriteLine("\nDisplaying the full assembly name\n");
         string assemblyName = myAssembly.GetName().FullName;
         Console.WriteLine(assemblyName);
         Console.WriteLine("\nDisplaying the public key for the assembly\n");
         byte[] publicKeyBytes = myAssembly.GetName().GetPublicKey();
         Console.WriteLine(Encoding.ASCII.GetString(publicKeyBytes));
         Console.WriteLine("\nDisplaying the public key token for the assembly\n");
         byte[] publicKeyTokenBytes = myAssembly.GetName().GetPublicKeyToken();
         Console.WriteLine(Encoding.ASCII.GetString(publicKeyTokenBytes));
      }
   }
}


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