internal class Program
	{
		private static void Main()
		{
			Thread[] threads = new Thread[8];
			for(int i = 0; i < threads.Length; i++)
			{
				threads[i] = new Thread(Start);
				threads[i].Name = "thread" + i;
				threads[i].Start();
//				Thread.Sleep(1000);
			}
			for(int i = 0; i < threads.Length; i++)
				threads[i].Join();
			Log("the whole work was done!");
		}

		private static void Start()
		{
			const string containerName = null;
			const string cryptoProviderName = "Crypto-Pro GOST R 34.10-2001 Cryptographic Service Provider";
			const int cryptoProviderType = 75;

			for(int i = 0; i < Int32.MaxValue; i++)
			{
				if(i % 10000 == 0)
					Log(string.Format("{0} iterations done", i));
				try
				{
					IntPtr cryptoProvider = IntPtr.Zero;
					try
					{
						if(!CryptAcquireContext(out cryptoProvider, containerName, cryptoProviderName, cryptoProviderType, CRYPT_VERIFYCONTEXT))
							throw new Win32Exception();
					}
					finally
					{
						if(cryptoProvider != IntPtr.Zero && !CryptReleaseContext(cryptoProvider, 0))
							throw new Win32Exception();
					}
				}
				catch(Exception e)
				{
					Log(string.Format("i = {0}: {1}", i, e));
				}
			}
		}
		
		private static void Log(string message)
		{
			Console.WriteLine(string.Format("{0}: {1}", Thread.CurrentThread.Name, message));
		}

		[DllImport("Advapi32.dll", SetLastError = true)]
		public static extern Boolean CryptAcquireContext([Out] out IntPtr cryptoProvider, String container, String providerName, Int32 providerType, int flags);

		[DllImport("Advapi32.dll", SetLastError = true)]
		public static extern Boolean CryptReleaseContext(IntPtr cryptoProvider, Int32 flags);

		public const int CRYPT_VERIFYCONTEXT = unchecked((int)0xF0000000);
	}