RIPEMD160 RIPEMD160 RIPEMD160 RIPEMD160 Class

定义

表示 MD160 哈希算法的所有实现均从中继承的抽象类。Represents the abstract class from which all implementations of the MD160 hash algorithm inherit.

public ref class RIPEMD160 abstract : System::Security::Cryptography::HashAlgorithm
[System.Runtime.InteropServices.ComVisible(true)]
public abstract class RIPEMD160 : System.Security.Cryptography.HashAlgorithm
type RIPEMD160 = class
    inherit HashAlgorithm
Public MustInherit Class RIPEMD160
Inherits HashAlgorithm
继承
派生
属性

示例

下面的代码示例计算目录RIPEMD160中所有文件的哈希值。The following code example calculates the RIPEMD160 hash for all files in a directory.

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

注解

哈希函数将任意长度的二进制字符串映射为固定长度的小型二进制字符串。Hash functions map binary strings of an arbitrary length to small binary strings of a fixed length. 加密哈希函数具有属性, 该属性无法进行计算, 从而无法找到哈希处理为同一值的两个不同的输入;也就是说, 如果相应的数据也匹配, 则两个数据集的哈希应该匹配。A cryptographic hash function has the property that it is computationally infeasible to find two distinct inputs that hash to the same value; that is, hashes of two sets of data should match if the corresponding data also matches. 对数据的小更改会导致哈希中的大量无法预测的更改。Small changes to the data result in large unpredictable changes in the hash.

RIPEMD-160 是160位的加密哈希函数。RIPEMD-160 is a 160-bit cryptographic hash function. 它用于替代128位哈希函数 MD4、MD5 和 RIPEMD。It is intended for use as a replacement for the 128-bit hash functions MD4, MD5, and RIPEMD. RIPEMD 是在 EU 项目准备好的框架中开发的 (争用完整性基元计算, 1988-1992)。RIPEMD was developed in the framework of the EU project RIPE (RACE Integrity Primitives Evaluation, 1988-1992).

备注

RIPEMD160已被安全哈希算法 SHA-256 和 SHA-512 及其派生类取代。RIPEMD160 has been superseded by the Secure Hash Algorithms SHA-256 and SHA-512 and their derived classes. SHA256SHA512 相比RIPEMD160, 提供更好的安全性和性能。SHA256 and SHA512 offer better security and performance than RIPEMD160. RIPEMD160仅用于与旧版应用程序和数据兼容。Use RIPEMD160 only for compatibility with legacy applications and data.

构造函数

RIPEMD160() RIPEMD160() RIPEMD160() RIPEMD160()

初始化 RIPEMD160 类的新实例。Initializes a new instance of the RIPEMD160 class.

方法

Clear() Clear() Clear() Clear()

释放 HashAlgorithm 类使用的所有资源。Releases all resources used by the HashAlgorithm class.

(Inherited from HashAlgorithm)
ComputeHash(Byte[]) ComputeHash(Byte[]) ComputeHash(Byte[]) ComputeHash(Byte[])

计算指定字节数组的哈希值。Computes the hash value for the specified byte array.

(Inherited from HashAlgorithm)
ComputeHash(Byte[], Int32, Int32) ComputeHash(Byte[], Int32, Int32) ComputeHash(Byte[], Int32, Int32) ComputeHash(Byte[], Int32, Int32)

计算指定字节数组的指定区域的哈希值。Computes the hash value for the specified region of the specified byte array.

(Inherited from HashAlgorithm)
ComputeHash(Stream) ComputeHash(Stream) ComputeHash(Stream) ComputeHash(Stream)

计算指定 Stream 对象的哈希值。Computes the hash value for the specified Stream object.

(Inherited from HashAlgorithm)
Create() Create() Create() Create()

创建 RIPEMD160 哈希算法的默认实现的实例。Creates an instance of the default implementation of the RIPEMD160 hash algorithm.

Create(String) Create(String) Create(String) Create(String)

创建 RIPEMD160 哈希算法的指定实现的实例。Creates an instance of the specified implementation of the RIPEMD160 hash algorithm.

Dispose() Dispose() Dispose() Dispose()

释放 HashAlgorithm 类的当前实例所使用的所有资源。Releases all resources used by the current instance of the HashAlgorithm class.

(Inherited from HashAlgorithm)
Dispose(Boolean) Dispose(Boolean) Dispose(Boolean) Dispose(Boolean)

释放由 HashAlgorithm 占用的非托管资源,还可以另外再释放托管资源。Releases the unmanaged resources used by the HashAlgorithm and optionally releases the managed resources.

(Inherited from HashAlgorithm)
Equals(Object) Equals(Object) Equals(Object) Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

获取当前实例的 TypeGets the Type of the current instance.

(Inherited from Object)
HashCore(Byte[], Int32, Int32) HashCore(Byte[], Int32, Int32) HashCore(Byte[], Int32, Int32) HashCore(Byte[], Int32, Int32)

当在派生类中重写时,将写入对象的数据路由到哈希算法以计算哈希值。When overridden in a derived class, routes data written to the object into the hash algorithm for computing the hash.

(Inherited from HashAlgorithm)
HashCore(ReadOnlySpan<Byte>) HashCore(ReadOnlySpan<Byte>) HashCore(ReadOnlySpan<Byte>) HashCore(ReadOnlySpan<Byte>) Inherited from HashAlgorithm
HashFinal() HashFinal() HashFinal() HashFinal()

当在派生类中重写时,在加密流对象处理完最后的数据后完成哈希计算。When overridden in a derived class, finalizes the hash computation after the last data is processed by the cryptographic stream object.

(Inherited from HashAlgorithm)
Initialize() Initialize() Initialize() Initialize()

初始化 HashAlgorithm 类的实现。Initializes an implementation of the HashAlgorithm class.

(Inherited from HashAlgorithm)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)
TransformBlock(Byte[], Int32, Int32, Byte[], Int32) TransformBlock(Byte[], Int32, Int32, Byte[], Int32) TransformBlock(Byte[], Int32, Int32, Byte[], Int32) TransformBlock(Byte[], Int32, Int32, Byte[], Int32)

计算输入字节数组指定区域的哈希值,并将输入字节数组指定区域复制到输出字节数组的指定区域。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.

(Inherited from HashAlgorithm)
TransformFinalBlock(Byte[], Int32, Int32) TransformFinalBlock(Byte[], Int32, Int32) TransformFinalBlock(Byte[], Int32, Int32) TransformFinalBlock(Byte[], Int32, Int32)

计算指定字节数组的指定区域的哈希值。Computes the hash value for the specified region of the specified byte array.

(Inherited from HashAlgorithm)
TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) Inherited from HashAlgorithm
TryHashFinal(Span<Byte>, Int32) TryHashFinal(Span<Byte>, Int32) TryHashFinal(Span<Byte>, Int32) TryHashFinal(Span<Byte>, Int32) Inherited from HashAlgorithm

属性

CanReuseTransform CanReuseTransform CanReuseTransform CanReuseTransform

获取一个值,该值指示是否可重复使用当前转换。Gets a value indicating whether the current transform can be reused.

(Inherited from HashAlgorithm)
CanTransformMultipleBlocks CanTransformMultipleBlocks CanTransformMultipleBlocks CanTransformMultipleBlocks

当在派生类中重写时,获取一个值,该值指示是否可以转换多个块。When overridden in a derived class, gets a value indicating whether multiple blocks can be transformed.

(Inherited from HashAlgorithm)
Hash Hash Hash Hash

获取计算所得的哈希代码的值。Gets the value of the computed hash code.

(Inherited from HashAlgorithm)
HashSize HashSize HashSize HashSize

获取计算所得的哈希代码的大小(以位为单位)。Gets the size, in bits, of the computed hash code.

(Inherited from HashAlgorithm)
InputBlockSize InputBlockSize InputBlockSize InputBlockSize

当在派生类中重写时,获取输入块的大小。When overridden in a derived class, gets the input block size.

(Inherited from HashAlgorithm)
OutputBlockSize OutputBlockSize OutputBlockSize OutputBlockSize

当在派生类中重写时,获取输出块的大小。When overridden in a derived class, gets the output block size.

(Inherited from HashAlgorithm)

字段

HashSizeValue HashSizeValue HashSizeValue HashSizeValue

表示计算所得的哈希代码的大小(以位为单位)。Represents the size, in bits, of the computed hash code.

(Inherited from HashAlgorithm)
HashValue HashValue HashValue HashValue

表示计算所得的哈希代码的值。Represents the value of the computed hash code.

(Inherited from HashAlgorithm)
State State State State

表示哈希计算的状态。Represents the state of the hash computation.

(Inherited from HashAlgorithm)

显式界面实现

IDisposable.Dispose() IDisposable.Dispose() IDisposable.Dispose() IDisposable.Dispose()

释放由 HashAlgorithm 占用的非托管资源,还可以另外再释放托管资源。Releases the unmanaged resources used by the HashAlgorithm and optionally releases the managed resources.

(Inherited from HashAlgorithm)

适用于

另请参阅