replace deprecated RNGCryptoServiceProvider

Author: piksel

src/ICSharpCode.SharpZipLib/Encryption/PkzipClassic.cs

@@ -444,7 +444,7 @@ public override byte[] Key
 		public override void GenerateKey()
 		{
 			key_ = new byte[12];
-			using (var rng = new RNGCryptoServiceProvider())
+			using (var rng = RandomNumberGenerator.Create())
 			{
 				rng.GetBytes(key_);
 			}

src/ICSharpCode.SharpZipLib/Zip/ZipFile.cs

@@ -3781,7 +3781,7 @@ private static void CheckClassicPassword(CryptoStream classicCryptoStream, ZipEn
 		private static void WriteEncryptionHeader(Stream stream, long crcValue)
 		{
 			byte[] cryptBuffer = new byte[ZipConstants.CryptoHeaderSize];
-			using (var rng = new RNGCryptoServiceProvider())
+			using (var rng = RandomNumberGenerator.Create())
 			{
 				rng.GetBytes(cryptBuffer);
 			}

src/ICSharpCode.SharpZipLib/Zip/ZipOutputStream.cs

@@ -722,7 +722,7 @@ private byte[] CreateZipCryptoHeader(long crcValue)
 			InitializeZipCryptoPassword(Password);
 
 			byte[] cryptBuffer = new byte[ZipConstants.CryptoHeaderSize];
-			using (var rng = new RNGCryptoServiceProvider())
+			using (var rng = RandomNumberGenerator.Create())
 			{
 				rng.GetBytes(cryptBuffer);
 			}