RIPEMD160Managed Class
.NET Framework 3.0
Computes the RIPEMD160 hash for the input data using the managed library.
Namespace: System.Security.Cryptography
Assembly: mscorlib (in mscorlib.dll)
System.Security.Cryptography Namespace
Assembly: mscorlib (in mscorlib.dll)
The following code example shows how to encode a file using the RIPEMD160Managed class and then how to decode the file.
using System; using System.IO; using System.Security.Cryptography; public class HashDirectory { // 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(); } public static void Main(String[] args) { if (args.Length < 1) { Console.WriteLine("Usage: hashdir <directory>"); return; } try { // Create a DirectoryInfo object representing the specified directory. DirectoryInfo dir = new DirectoryInfo(args[0]); // 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); // 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."); } } }
import System.*;
import System.IO.*;
import System.Security.Cryptography.*;
public class HashDirectory
{
// Print the byte array in a readable format.
public static void PrintByteArray(ubyte array[])
{
int i;
for (i = 0; i < array.get_Length(); i++) {
Console.Write(String.Format("{0:X2}", array.get_Item(i)));
if (i % 4 == 3) {
Console.Write(" ");
}
}
Console.WriteLine();
} //PrintByteArray
public static void main(String[] args)
{
if (args.get_Length() < 1) {
Console.WriteLine("Usage: hashdir <directory>");
return;
}
try {
// Create a DirectoryInfo object representing the specified
// directory.
DirectoryInfo dir = new DirectoryInfo(args[0]);
// Get the FileInfo objects for every file in the directory.
FileInfo files[] = dir.GetFiles();
// Initialize a RIPE160 hash object.
RIPEMD160 myRIPEMD160 = RIPEMD160Managed.Create();
ubyte hashValue[];
FileInfo fInfo = null;
for (int iCtr = 0; iCtr < files.get_Length(); iCtr++) {
// Compute and print the hash values for each file in directory.
fInfo = files[iCtr];
// 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(fInfo.get_Name() + ": ");
// Write the hash value to the Console.
PrintByteArray(hashValue);
// Close the file.
fileStream.Close();
}
return;
}
catch (DirectoryNotFoundException exp) {
Console.WriteLine("Error: The directory specified could"
+ "not be found.");
}
catch (IOException exp) {
Console.WriteLine("Error: A file in the directory could not "
+ "be accessed.");
}
} //main
} //HashDirectory
System.Object
System.Security.Cryptography.HashAlgorithm
System.Security.Cryptography.RIPEMD160
System.Security.Cryptography.RIPEMD160Managed
System.Security.Cryptography.HashAlgorithm
System.Security.Cryptography.RIPEMD160
System.Security.Cryptography.RIPEMD160Managed
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Reference
RIPEMD160Managed MembersSystem.Security.Cryptography Namespace
Other Resources
Cryptographic ServicesCommunity Additions
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