本文整理匯總了C#中System.Security.Cryptography.HashAlgorithm.ComputeHash方法的典型用法代碼示例。如果您正苦於以下問題：C# HashAlgorithm.ComputeHash方法的具體用法？C# HashAlgorithm.ComputeHash怎麽用？C# HashAlgorithm.ComputeHash使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。
在下文中一共展示了HashAlgorithm.ComputeHash方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: Main
//引入命名空間
using System;
using System.Security.Cryptography;
using System.Text;
public class Program
{
public static void Main()
{
string source = "Hello World!";
using (SHA256 sha256Hash = SHA256.Create())
{
string hash = GetHash(sha256Hash, source);
Console.WriteLine($"The SHA256 hash of {source} is: {hash}.");
Console.WriteLine("Verifying the hash...");
if (VerifyHash(sha256Hash, source, hash))
{
Console.WriteLine("The hashes are the same.");
}
else
{
Console.WriteLine("The hashes are not same.");
}
}
}
private static string GetHash(HashAlgorithm hashAlgorithm, string input)
{
// Convert the input string to a byte array and compute the hash.
byte[] data = hashAlgorithm.ComputeHash(Encoding.UTF8.GetBytes(input));
// Create a new Stringbuilder to collect the bytes
// and create a string.
var sBuilder = new StringBuilder();
// Loop through each byte of the hashed data
// and format each one as a hexadecimal string.
for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("x2"));
}
// Return the hexadecimal string.
return sBuilder.ToString();
}
// Verify a hash against a string.
private static bool VerifyHash(HashAlgorithm hashAlgorithm, string input, string hash)
{
// Hash the input.
var hashOfInput = GetHash(hashAlgorithm, input);
// Create a StringComparer an compare the hashes.
StringComparer comparer = StringComparer.OrdinalIgnoreCase;
return comparer.Compare(hashOfInput, hash) == 0;
}
}輸出：
The SHA256 hash of Hello World! is: 7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9069. Verifying the hash... The hashes are the same.
示例2: Main
//引入命名空間
using System;
using System.IO;
using System.Security.Cryptography;
public class HashDirectory
{
public static void Main(String[] args)
{
if (args.Length < 1)
{
Console.WriteLine("No directory selected.");
return;
}
string directory = args[0];
if (Directory.Exists(directory))
{
// Create a DirectoryInfo object representing the specified directory.
var dir = new DirectoryInfo(directory);
// Get the FileInfo objects for every file in the directory.
FileInfo[] files = dir.GetFiles();
// Initialize a SHA256 hash object.
using (SHA256 mySHA256 = SHA256.Create())
{
// Compute and print the hash values for each file in directory.
foreach (FileInfo fInfo in files)
{
try {
// 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.
byte[] hashValue = mySHA256.ComputeHash(fileStream);
// Write the name and hash value of the file to the console.
Console.Write($"{fInfo.Name}: ");
PrintByteArray(hashValue);
// Close the file.
fileStream.Close();
}
catch (IOException e) {
Console.WriteLine($"I/O Exception: {e.Message}");
}
catch (UnauthorizedAccessException e) {
Console.WriteLine($"Access Exception: {e.Message}");
}
}
}
}
else
{
Console.WriteLine("The directory specified could not be found.");
}
}
// Display the byte array in a readable format.
public static void PrintByteArray(byte[] array)
{
for (int i = 0; i < array.Length; i++)
{
Console.Write($"{array[i]:X2}");
if ((i % 4) == 3) Console.Write(" ");
}
Console.WriteLine();
}
}示例3: Main
//引入命名空間
using System;
using System.Text;
using System.Security.Cryptography;
class MainClass {
public static void Main(string[] args) {
HashAlgorithm hashAlg = null;
hashAlg = new SHA1Managed();
using (hashAlg) {
byte[] pwordData = Encoding.Default.GetBytes(args[1]);
byte[] hash = hashAlg.ComputeHash(pwordData);
Console.WriteLine(BitConverter.ToString(hash));
}
}
}