RIPEMD160Managed Clase

Definición

Calcula el valor hash de RIPEMD160 de los datos de entrada utilizando la biblioteca administrada.Computes the RIPEMD160 hash for the input data using the managed library.

public ref class RIPEMD160Managed : System::Security::Cryptography::RIPEMD160
[System.Runtime.InteropServices.ComVisible(true)]
public class RIPEMD160Managed : System.Security.Cryptography.RIPEMD160
type RIPEMD160Managed = class
    inherit RIPEMD160
Public Class RIPEMD160Managed
Inherits RIPEMD160
Herencia
RIPEMD160Managed
Atributos

Ejemplos

En el ejemplo de código siguiente se muestra cómo codificar un archivo RIPEMD160Managed mediante la clase y, a continuación, cómo descodificar el archivo.The following code example shows how to encode a file using the RIPEMD160Managed class and then how to decode the file.

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

Comentarios

RIPEMD-160 es una función hash criptográfica de 160 bits.RIPEMD-160 is a 160-bit cryptographic hash function. Está pensado para su uso como sustituto seguro de las funciones hash de 128 bits MD4, MD5 y RIPEMD.It is intended for use as a secure replacement for the 128-bit hash functions MD4, MD5, and RIPEMD. RIPEMD se desarrolló en el marco del proyecto de la UE RIPE (evaluación de primitivas de integridad de carreras, 1988-1992).RIPEMD was developed in the framework of the EU project RIPE (RACE Integrity Primitives Evaluation, 1988-1992).

Nota

RIPEMD160Managedse ha sustituido por los algoritmos hash seguros SHA-256 y SHA-512 y sus clases derivadas.RIPEMD160Managed has been superseded by the Secure Hash Algorithms SHA-256 and SHA-512 and their derived classes. SHA256Managedy SHA512Managed ofrecen mayor seguridad y rendimiento que RIPEMD160Managed.SHA256Managed and SHA512Managed offer better security and performance than RIPEMD160Managed. Use RIPEMD160Managed solo para la compatibilidad con las aplicaciones y los datos heredados.Use RIPEMD160Managed only for compatibility with legacy applications and data.

Constructores

RIPEMD160Managed()

Inicializa una nueva instancia de la clase RIPEMD160.Initializes a new instance of the RIPEMD160 class.

Campos

HashSizeValue

Representa el tamaño en bits del código hash calculado.Represents the size, in bits, of the computed hash code.

(Heredado de HashAlgorithm)
HashValue

Representa el valor del código hash calculado.Represents the value of the computed hash code.

(Heredado de HashAlgorithm)
State

Representa el estado del cálculo del valor hash.Represents the state of the hash computation.

(Heredado de HashAlgorithm)

Propiedades

CanReuseTransform

Obtiene un valor que indica si la transformación actual puede volver a usarse.Gets a value indicating whether the current transform can be reused.

(Heredado de HashAlgorithm)
CanTransformMultipleBlocks

Cuando se invalida en una clase derivada, obtiene un valor que indica si se pueden transformar varios bloques.When overridden in a derived class, gets a value indicating whether multiple blocks can be transformed.

(Heredado de HashAlgorithm)
Hash

Obtiene el valor del código hash calculado.Gets the value of the computed hash code.

(Heredado de HashAlgorithm)
HashSize

Obtiene el tamaño en bits del código hash calculado.Gets the size, in bits, of the computed hash code.

(Heredado de HashAlgorithm)
InputBlockSize

Cuando se invalida en una clase derivada, obtiene el tamaño del bloque de entrada.When overridden in a derived class, gets the input block size.

(Heredado de HashAlgorithm)
OutputBlockSize

Cuando se invalida en una clase derivada, obtiene el tamaño del bloque de salida.When overridden in a derived class, gets the output block size.

(Heredado de HashAlgorithm)

Métodos

Clear()

Libera todos los recursos que utiliza la clase HashAlgorithm.Releases all resources used by the HashAlgorithm class.

(Heredado de HashAlgorithm)
ComputeHash(Byte[])

Calcula el valor hash para la matriz de bytes especificada.Computes the hash value for the specified byte array.

(Heredado de HashAlgorithm)
ComputeHash(Byte[], Int32, Int32)

Calcula el valor hash para la región especificada de la matriz de bytes indicada.Computes the hash value for the specified region of the specified byte array.

(Heredado de HashAlgorithm)
ComputeHash(Stream)

Calcula el valor hash del objeto Stream especificado.Computes the hash value for the specified Stream object.

(Heredado de HashAlgorithm)
Dispose()

Libera todos los recursos usados por la instancia actual de la clase HashAlgorithm.Releases all resources used by the current instance of the HashAlgorithm class.

(Heredado de HashAlgorithm)
Dispose(Boolean)

Libera los recursos no administrados que usa HashAlgorithm y, de forma opcional, libera los recursos administrados.Releases the unmanaged resources used by the HashAlgorithm and optionally releases the managed resources.

(Heredado de HashAlgorithm)
Equals(Object)

Determina si el objeto especificado es igual al objeto actual.Determines whether the specified object is equal to the current object.

(Heredado de Object)
GetHashCode()

Sirve como función hash predeterminada.Serves as the default hash function.

(Heredado de Object)
GetType()

Obtiene el Type de la instancia actual.Gets the Type of the current instance.

(Heredado de Object)
HashCore(Byte[], Int32, Int32)

Cuando se invalida en una clase derivada, enruta los datos escritos en el objeto al algoritmo hash RIPEMD160 para el cálculo del valor hash.When overridden in a derived class, routes data written to the object into the RIPEMD160 hash algorithm for computing the hash.

HashCore(ReadOnlySpan<Byte>) (Heredado de HashAlgorithm)
HashFinal()

Cuando se invalida en una clase derivada, finaliza el cálculo hash una vez que el objeto de secuencia criptográfico termina de procesar los últimos datos.When overridden in a derived class, finalizes the hash computation after the last data is processed by the cryptographic stream object.

Initialize()

Inicializa una instancia de la clase RIPEMD160Managed utilizando la biblioteca administrada.Initializes an instance of the RIPEMD160Managed class using the managed library.

MemberwiseClone()

Crea una copia superficial del Object actual.Creates a shallow copy of the current Object.

(Heredado de Object)
ToString()

Devuelve un valor de tipo string que representa el objeto actual.Returns a string that represents the current object.

(Heredado de Object)
TransformBlock(Byte[], Int32, Int32, Byte[], Int32)

Calcula el valor hash para la región especificada de la matriz de bytes de entrada y copia la región especificada de la matriz de bytes de entrada resultante en la región indicada de la matriz de bytes de salida.Computes the hash value for the specified region of the input byte array and copies the specified region of the input byte array to the specified region of the output byte array.

(Heredado de HashAlgorithm)
TransformFinalBlock(Byte[], Int32, Int32)

Calcula el valor hash para la región especificada de la matriz de bytes indicada.Computes the hash value for the specified region of the specified byte array.

(Heredado de HashAlgorithm)
TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) (Heredado de HashAlgorithm)
TryHashFinal(Span<Byte>, Int32) (Heredado de HashAlgorithm)

Implementaciones de interfaz explícitas

IDisposable.Dispose()

Libera los recursos no administrados que usa HashAlgorithm y, de forma opcional, libera los recursos administrados.Releases the unmanaged resources used by the HashAlgorithm and optionally releases the managed resources.

(Heredado de HashAlgorithm)

Se aplica a

Consulte también: