diff --git a/DigitalData.Core.Security.Extensions/Extensions.cs b/DigitalData.Core.Security.Extensions/Extensions.cs
new file mode 100644
index 0000000..88d3714
--- /dev/null
+++ b/DigitalData.Core.Security.Extensions/Extensions.cs
@@ -0,0 +1,13 @@
+namespace DigitalData.Core.Security.Extensions
+{
+    public static class Extensions
+    {
+        public static string ToBase64String(this byte[] bytes) => Convert.ToBase64String(bytes);
+
+        public static byte[] Base64ToByte(this string base64String) => Convert.FromBase64String(base64String);
+
+        public static byte[] ToBytes(this string str) => System.Text.Encoding.UTF8.GetBytes(str);
+
+        public static string BytesToString(this byte[] bytes) => System.Text.Encoding.UTF8.GetString(bytes);
+    }
+}
\ No newline at end of file
diff --git a/DigitalData.Core.Security.Extensions/RSAExtensions.cs b/DigitalData.Core.Security.Extensions/RSAExtensions.cs
new file mode 100644
index 0000000..344c7f6
--- /dev/null
+++ b/DigitalData.Core.Security.Extensions/RSAExtensions.cs
@@ -0,0 +1,14 @@
+using System.Security.Cryptography;
+
+namespace DigitalData.Core.Security.Extensions
+{
+    public static class RSAExtensions
+    {
+        public static RSA ToRSA(this string pem)
+        {
+            var rsa = RSA.Create();
+            rsa.ImportFromPem(pem);
+            return rsa;
+        }
+    }
+}
\ No newline at end of file