RIPEMD160.Create 方法

參考

定義

命名空間:: System.Security.Cryptography

組件:: mscorlib.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

建立 RIPEMD160 類別的特定實作。

多載

Create()	建立 RIPEMD160 雜湊演算法之預設實作的執行個體。
Create(String)	建立 RIPEMD160 雜湊演算法之指定實作的執行個體。

Create()

建立 RIPEMD160 雜湊演算法之預設實作的執行個體。

public:
 static System::Security::Cryptography::RIPEMD160 ^ Create();

public static System.Security.Cryptography.RIPEMD160 Create ();

static member Create : unit -> System.Security.Cryptography.RIPEMD160

Public Shared Function Create () As RIPEMD160

傳回

RIPEMD160

RIPEMD160 雜湊演算法的新執行個體。

例外狀況

TargetInvocationException

此演算法在聯邦資訊處理標準 (FIPS) 模式啟用的情況下使用，但是和 FIPS 並不相容。

範例

下列程式碼範例會 RIPEMD160 計算目錄中所有檔案的雜湊。

using namespace System;
using namespace System::IO;
using namespace System::Security::Cryptography;

// Print the byte array in a readable format.
void PrintByteArray( array<Byte>^array )
{
   int i;
   for ( i = 0; i < array->Length; i++ )
   {
      Console::Write( String::Format( "{0:X2}", array[ i ] ) );
      if ( (i % 4) == 3 )
            Console::Write( " " );

   }
   Console::WriteLine();
}

int main()
{
   array<String^>^args = Environment::GetCommandLineArgs();
   if ( args->Length < 2 )
   {
      Console::WriteLine( "Usage: hashdir <directory>" );
      return 0;
   }

   try
   {
      
      // Create a DirectoryInfo object representing the specified directory.
      DirectoryInfo^ dir = gcnew DirectoryInfo( args[ 1 ] );
      
      // Get the FileInfo objects for every file in the directory.
      array<FileInfo^>^files = dir->GetFiles();
      
      // Initialize a RIPE160 hash object.
      RIPEMD160 ^ myRIPEMD160 = RIPEMD160Managed::Create();
      array<Byte>^hashValue;
      
      // Compute and print the hash values for each file in directory.
      System::Collections::IEnumerator^ myEnum = files->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         FileInfo^ fInfo = safe_cast<FileInfo^>(myEnum->Current);
         
         // Create a fileStream for the file.
         FileStream^ fileStream = fInfo->Open( FileMode::Open );
         
         // Compute the hash of the fileStream.
         hashValue = myRIPEMD160->ComputeHash( fileStream );
         
         // Write the name of the file to the Console.
         Console::Write( "{0}: ", fInfo->Name );
         
         // Write the hash value to the Console.
         PrintByteArray( hashValue );
         
         // Close the file.
         fileStream->Close();
      }
      return 0;
   }
   catch ( DirectoryNotFoundException^ ) 
   {
      Console::WriteLine( "Error: The directory specified could not be found." );
   }
   catch ( IOException^ ) 
   {
      Console::WriteLine( "Error: A file in the directory could not be accessed." );
   }

}

using System;
using System.IO;
using System.Security.Cryptography;
using System.Windows.Forms;

public class HashDirectory
{

    [STAThreadAttribute]
    public static void Main(String[] args)
    {
        string directory = "";
        if (args.Length < 1)
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            DialogResult dr = fbd.ShowDialog();
            if (dr == DialogResult.OK)
            {
                directory = fbd.SelectedPath;
            }
            else
            {
                Console.WriteLine("No directory selected.");
                return;
            }
        }
        else
        {
            directory = args[0];
        }

        try
        {
            // Create a DirectoryInfo object representing the specified directory.
            DirectoryInfo dir = new DirectoryInfo(directory);
            // Get the FileInfo objects for every file in the directory.
            FileInfo[] files = dir.GetFiles();
            // Initialize a RIPE160 hash object.
            RIPEMD160 myRIPEMD160 = RIPEMD160Managed.Create();
            byte[] hashValue;
            // Compute and print the hash values for each file in directory.
            foreach (FileInfo fInfo in files)
            {
                // Create a fileStream for the file.
                FileStream fileStream = fInfo.Open(FileMode.Open);
                // Be sure it's positioned to the beginning of the stream.
                fileStream.Position = 0;
                // Compute the hash of the fileStream.
                hashValue = myRIPEMD160.ComputeHash(fileStream);
                // Write the name of the file to the Console.
                Console.Write(fInfo.Name + ": ");
                // Write the hash value to the Console.
                PrintByteArray(hashValue);
                // Close the file.
                fileStream.Close();
            }
            return;
        }
        catch (DirectoryNotFoundException)
        {
            Console.WriteLine("Error: The directory specified could not be found.");
        }
        catch (IOException)
        {
            Console.WriteLine("Error: A file in the directory could not be accessed.");
        }
    }
    // Print the byte array in a readable format.
    public static void PrintByteArray(byte[] array)
    {
        int i;
        for (i = 0; i < array.Length; i++)
        {
            Console.Write(String.Format("{0:X2}", array[i]));
            if ((i % 4) == 3) Console.Write(" ");
        }
        Console.WriteLine();
    }
}

Imports System.IO
Imports System.Security.Cryptography
Imports System.Windows.Forms

Public Class HashDirectory

    Public Shared Sub Main(ByVal args() As String)
        Dim directory As String
        If args.Length < 1 Then
            Dim fdb As New FolderBrowserDialog
            Dim dr As DialogResult = fdb.ShowDialog()
            If (dr = DialogResult.OK) Then
                directory = fdb.SelectedPath
            Else
                Console.WriteLine("No directory selected")
                Return
            End If
        Else
            directory = args(0)
        End If
        Try
            ' Create a DirectoryInfo object representing the specified directory.
            Dim dir As New DirectoryInfo(directory)
            ' Get the FileInfo objects for every file in the directory.
            Dim files As FileInfo() = dir.GetFiles()
            ' Initialize a RIPE160 hash object.
            Dim myRIPEMD160 As RIPEMD160 = RIPEMD160Managed.Create()
            Dim hashValue() As Byte
            ' Compute and print the hash values for each file in directory.
            Dim fInfo As FileInfo
            For Each fInfo In files
                ' Create a fileStream for the file.
                Dim fileStream As FileStream = fInfo.Open(FileMode.Open)
                ' Be sure it's positioned to the beginning of the stream.
                fileStream.Position = 0
                ' Compute the hash of the fileStream.
                hashValue = myRIPEMD160.ComputeHash(fileStream)
                ' Write the name of the file to the Console.
                Console.Write(fInfo.Name + ": ")
                ' Write the hash value to the Console.
                PrintByteArray(hashValue)
                ' Close the file.
                fileStream.Close()
            Next fInfo
            Return
        Catch DExc As DirectoryNotFoundException
            Console.WriteLine("Error: The directory specified could not be found.")
        Catch IOExc As IOException
            Console.WriteLine("Error: A file in the directory could not be accessed.")
        End Try

    End Sub

    ' Print the byte array in a readable format.
    Public Shared Sub PrintByteArray(ByVal array() As Byte)
        Dim i As Integer
        For i = 0 To array.Length - 1
            Console.Write(String.Format("{0:X2}", array(i)))
            If i Mod 4 = 3 Then
                Console.Write(" ")
            End If
        Next i
        Console.WriteLine()

    End Sub
End Class

備註

您無法建立抽象類別的實例。應用程式程式碼會建立衍生類別的新實例。如需詳細資訊，請參閱 RIPEMD160Managed 類別。

另請參閱

密碼編譯服務

適用於

Create(String)

建立 RIPEMD160 雜湊演算法之指定實作的執行個體。

public:
 static System::Security::Cryptography::RIPEMD160 ^ Create(System::String ^ hashName);

public static System.Security.Cryptography.RIPEMD160 Create (string hashName);

static member Create : string -> System.Security.Cryptography.RIPEMD160

Public Shared Function Create (hashName As String) As RIPEMD160

參數

hashName: String

要使用之 RIPEMD160 的特定實作的名稱。

傳回

RIPEMD160

指定之 RIPEMD160 實作的新執行個體。

例外狀況

TargetInvocationException

hashName 參數所描述的演算法，會在聯邦資訊處理標準 (FIPS) 模式啟用的情況下使用，但是和 FIPS 並不相容。

備註

您無法建立抽象類別的實例。應用程式程式碼會建立衍生類別的新實例。如需詳細資訊，請參閱 RIPEMD160Managed 類別。

另請參閱

密碼編譯服務

適用於

RIPEMD160.Create 方法

定義

多載

Create()

傳回

例外狀況

範例

備註

另請參閱

適用於

Create(String)

參數

傳回

例外狀況

備註

另請參閱

適用於

意見反應

其他資源