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C#获取指定字符串的MD5和SHA*加密代码

OC/C/C++ 水墨上仙 1856次浏览 已收录 手机上查看

C#获取指定字符串的MD5和SHA*加密代码

using System;
using System.Text;
using System.Security.Cryptography;
namespace StringHash
{
	class StringHash
	{
		static int Main(string[] args)
		{
			try
			{
				string hash = string.Empty;
				string str = string.Empty;
				string result;
				if (args.Length != 2)
				{
					return WriteError("Missing or invalid parameters");
				}
				foreach (string arg in args)
				{
					switch (arg.Substring(0, 3).ToUpper())
					{
						case "/A:":
						case "/H:":
							hash = arg.Substring(3).ToUpper();
							break;
						case "/S:":
							str = arg.Substring(3);
							break;
						default:
							return WriteError("Invalid parameter: " + arg);
					}
				}
				if (string.IsNullOrEmpty(hash) || string.IsNullOrEmpty(str))
				{
					return WriteError("Missing required parameters");
				}
				HashAlgorithm ha;
				switch (hash)
				{
					case "MD5":
						ha = new MD5CryptoServiceProvider();
						break;
					case "SHA1":
					case "SHA-1":
						ha = new SHA1CryptoServiceProvider();
						break;
					case "SHA256":
					case "SHA-256":
						ha = new SHA256CryptoServiceProvider();
						break;
					case "SHA384":
					case "SHA-384":
						ha = new SHA384CryptoServiceProvider();
						break;
					case "SHA512":
					case "SHA-512":
						ha = new SHA512CryptoServiceProvider();
						break;
					default:
						return WriteError("Invalid hash type");
				}
				result = BitConverter.ToString(ha.ComputeHash(StrToByteArray(str)));
				ha.Clear();
				StringBuilder sb = new StringBuilder(result.ToLowerInvariant());
				Console.OpenStandardOutput();
				Console.WriteLine(sb.Replace("-", ""));
				return 0;
			}
			catch (Exception e)
			{
				return WriteError(e);
			}
		}
		// C# to convert a string to a byte array
		// http://www.chilkatsoft.com/faq/dotnetstrtobytes.html
		public static byte[] StrToByteArray(string instring)
		{
			System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
			return encoding.GetBytes(instring);
		}
		public static int WriteError(Exception e)
		{
			return WriteError(e == null ? null : e.Message);
		}
		public static int WriteError(string errorMessage)
		{
			Console.OpenStandardError();
			if (string.IsNullOrEmpty(errorMessage) == false)
			{
				Console.WriteLine();
				Console.WriteLine("ERROR: {0}", errorMessage);
			}
			Console.WriteLine();
			Console.WriteLine("StringHash,  Version 1.00");
			Console.WriteLine("Get the MD5 or SHA* hash value for the specified string");
			Console.WriteLine();
			Console.WriteLine("Usage:  STRINGHASH  /A:hashAlgorithm  /S:\"string\"");
			Console.WriteLine();
			Console.WriteLine("Where:  hashAlgorithm  is either MD5, SHA1, SHA256, SHA384 or SHA512");
			Console.WriteLine("        string         must be enclosed in doublequotes if it contains spaces");
			Console.WriteLine();
			Console.WriteLine("Written by Rob van der Woude");
			Console.WriteLine("http://www.robvanderwoude.com");
			Console.OpenStandardOutput();
			return 1;
		}
	}
}


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