RIPEMD160.Create Methode
Definition
Wichtig
Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.
Erstellt angegebene Implementierungen der RIPEMD160-Klasse.
Überlädt
| Create() |
Erstellt eine Instanz der Standardimplementierung des RIPEMD160-Hashalgorithmus. |
| Create(String) |
Erstellt eine Instanz der angegebenen Implementierung des RIPEMD160-Hashalgorithmus. |
Create()
Erstellt eine Instanz der Standardimplementierung des RIPEMD160-Hashalgorithmus.
public:
static System::Security::Cryptography::RIPEMD160 ^ Create();public static System.Security.Cryptography.RIPEMD160 Create ();static member Create : unit -> System.Security.Cryptography.RIPEMD160Public Shared Function Create () As RIPEMD160Gibt zurück
Eine neue Instanz des RIPEMD160-Hashalgorithmus.
Ausnahmen
Der Algorithmus wurde bei aktiviertem FIPS-Modus (Federal Information Processing Standards) verwendet, ist aber nicht FIPS-kompatibel.
Beispiele
Im folgenden Codebeispiel wird der RIPEMD160 Hash für alle Dateien in einem Verzeichnis berechnet.
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
Hinweise
Sie können keine Instanz einer abstrakten Klasse erstellen. Der Anwendungscode erstellt eine neue Instanz einer abgeleiteten Klasse. Weitere Informationen finden Sie in den Ausführungen zur RIPEMD160Managed-Klasse.
Siehe auch
Gilt für
Create(String)
Erstellt eine Instanz der angegebenen Implementierung des RIPEMD160-Hashalgorithmus.
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.RIPEMD160Public Shared Function Create (hashName As String) As RIPEMD160Parameter
Gibt zurück
Eine neue Instanz der angegebenen Implementierung von RIPEMD160.
Ausnahmen
Der durch den hashName-Parameter beschriebene Algorithmus wurde bei aktiviertem FIPS-Modus (Federal Information Processing Standards) verwendet, ist aber nicht FIPS-kompatibel.
Hinweise
Sie können keine Instanz einer abstrakten Klasse erstellen. Der Anwendungscode erstellt eine neue Instanz einer abgeleiteten Klasse. Weitere Informationen finden Sie in den Ausführungen zur RIPEMD160Managed-Klasse.