Implementation of SecureString and CryptoRngProvider

SystemExtensions.NetStandard.Security/Rng/CryptoRngProvider.cs

@@ -0,0 +1,47 @@
+using System.Security.Cryptography;
+
+namespace System.Rng
+{
+    public sealed class CryptoRngProvider : ICryptoRngProvider, IDisposable
+    {
+        private readonly RNGCryptoServiceProvider rngProvider;
+        private bool disposedValue;
+
+        public CryptoRngProvider()
+        {
+            this.rngProvider = new RNGCryptoServiceProvider();
+        }
+        public CryptoRngProvider(CspParameters cspParams)
+        {
+            this.rngProvider = new RNGCryptoServiceProvider(cspParams);
+        }
+
+
+        public void GetBytes(byte[] data)
+        {
+            this.rngProvider.GetBytes(data);
+        }
+        public void GetNonZeroBytes(byte[] data)
+        {
+            this.rngProvider.GetNonZeroBytes(data);
+        }
+
+        private void Dispose(bool disposing)
+        {
+            if (!this.disposedValue)
+            {
+                if (disposing)
+                {
+                    this.rngProvider.Dispose();
+                }
+
+                this.disposedValue = true;
+            }
+        }
+        public void Dispose()
+        {
+            this.Dispose(disposing: true);
+            GC.SuppressFinalize(this);
+        }
+    }
+}

SystemExtensions.NetStandard.Security/Rng/ICryptoRngProvider.cs

@@ -0,0 +1,8 @@
+namespace System.Rng
+{
+    public interface ICryptoRngProvider
+    {
+        public void GetBytes(byte[] data);
+        public void GetNonZeroBytes(byte[] data);
+    }
+}