1 files changed, 95 insertions, 0 deletions
diff --git a/crypto/src/util/encoders/Base64.cs b/crypto/src/util/encoders/Base64.cs
new file mode 100644
index 000000000..5dc9fae63
--- /dev/null
+++ b/crypto/src/util/encoders/Base64.cs
@@ -0,0 +1,95 @@
+using System;
+using System.IO;
+using System.Text;
+
+namespace Org.BouncyCastle.Utilities.Encoders
+{
+	public sealed class Base64
+	{
+		private Base64()
+		{
+		}
+
+		/**
+		 * encode the input data producing a base 64 encoded byte array.
+		 *
+		 * @return a byte array containing the base 64 encoded data.
+		 */
+		public static byte[] Encode(
+			byte[] data)
+		{
+			string s = Convert.ToBase64String(data, 0, data.Length);
+            return Strings.ToAsciiByteArray(s);
+		}
+
+		/**
+		 * Encode the byte data to base 64 writing it to the given output stream.
+		 *
+		 * @return the number of bytes produced.
+		 */
+		public static int Encode(
+			byte[]	data,
+			Stream	outStream)
+		{
+			string s = Convert.ToBase64String(data, 0, data.Length);
+            byte[] encoded = Strings.ToAsciiByteArray(s);
+			outStream.Write(encoded, 0, encoded.Length);
+			return encoded.Length;
+		}
+
+		/**
+		 * Encode the byte data to base 64 writing it to the given output stream.
+		 *
+		 * @return the number of bytes produced.
+		 */
+		public static int Encode(
+			byte[]	data,
+			int		off,
+			int		length,
+			Stream	outStream)
+		{
+			string s = Convert.ToBase64String(data, off, length);
+            byte[] encoded = Strings.ToAsciiByteArray(s);
+			outStream.Write(encoded, 0, encoded.Length);
+			return encoded.Length;
+		}
+
+		/**
+		 * decode the base 64 encoded input data. It is assumed the input data is valid.
+		 *
+		 * @return a byte array representing the decoded data.
+		 */
+		public static byte[] Decode(
+			byte[] data)
+		{
+            string s = Strings.FromAsciiByteArray(data);
+			return Convert.FromBase64String(s);
+		}
+
+		/**
+		 * decode the base 64 encoded string data - whitespace will be ignored.
+		 *
+		 * @return a byte array representing the decoded data.
+		 */
+		public static byte[] Decode(
+			string data)
+		{
+			return Convert.FromBase64String(data);
+		}
+
+		/**
+		 * decode the base 64 encoded string data writing it to the given output stream,
+		 * whitespace characters will be ignored.
+		 *
+		 * @return the number of bytes produced.
+		 */
+		public static int Decode(
+			string	data,
+			Stream	outStream)
+		{
+			byte[] decoded = Decode(data);
+			outStream.Write(decoded, 0, decoded.Length);
+			return decoded.Length;
+		}
+	}
+}