1 files changed, 107 insertions, 0 deletions
diff --git a/crypto/src/util/Strings.cs b/crypto/src/util/Strings.cs
new file mode 100644
index 000000000..96032bdc5
--- /dev/null
+++ b/crypto/src/util/Strings.cs
@@ -0,0 +1,107 @@
+using System;
+using System.Text;
+
+namespace Org.BouncyCastle.Utilities
+{
+	/// <summary> General string utilities.</summary>
+	public sealed class Strings
+	{
+		private Strings()
+		{
+		}
+
+		internal static bool IsOneOf(string s, params string[] candidates)
+		{
+			foreach (string candidate in candidates)
+			{
+				if (s == candidate)
+					return true;
+			}
+			return false;
+		}
+
+		public static string FromByteArray(
+			byte[] bs)
+		{
+			char[] cs = new char[bs.Length];
+			for (int i = 0; i < cs.Length; ++i)
+			{
+				cs[i] = Convert.ToChar(bs[i]);
+			}
+			return new string(cs);
+		}
+
+        public static byte[] ToByteArray(
+            char[] cs)
+        {
+            byte[] bs = new byte[cs.Length];
+            for (int i = 0; i < bs.Length; ++i)
+            {
+                bs[i] = Convert.ToByte(cs[i]);
+            }
+            return bs;
+        }
+
+        public static byte[] ToByteArray(
+			string s)
+		{
+			byte[] bs = new byte[s.Length];
+			for (int i = 0; i < bs.Length; ++i)
+			{
+				bs[i] = Convert.ToByte(s[i]);
+			}
+			return bs;
+		}
+
+        public static string FromAsciiByteArray(
+            byte[] bytes)
+        {
+#if SILVERLIGHT
+            // TODO Check for non-ASCII bytes in input?
+            return Encoding.UTF8.GetString(bytes, 0, bytes.Length);
+#else
+            return Encoding.ASCII.GetString(bytes, 0, bytes.Length);
+#endif
+        }
+
+        public static byte[] ToAsciiByteArray(
+            char[] cs)
+        {
+#if SILVERLIGHT
+            // TODO Check for non-ASCII characters in input?
+            return Encoding.UTF8.GetBytes(cs);
+#else
+            return Encoding.ASCII.GetBytes(cs);
+#endif
+        }
+
+        public static byte[] ToAsciiByteArray(
+            string s)
+        {
+#if SILVERLIGHT
+            // TODO Check for non-ASCII characters in input?
+            return Encoding.UTF8.GetBytes(s);
+#else
+            return Encoding.ASCII.GetBytes(s);
+#endif
+        }
+
+        public static string FromUtf8ByteArray(
+			byte[] bytes)
+		{
+			return Encoding.UTF8.GetString(bytes, 0, bytes.Length);
+		}
+
+        public static byte[] ToUtf8ByteArray(
+            char[] cs)
+        {
+            return Encoding.UTF8.GetBytes(cs);
+        }
+
+		public static byte[] ToUtf8ByteArray(
+			string s)
+		{
+			return Encoding.UTF8.GetBytes(s);
+		}
+	}
+}