1 files changed, 86 insertions, 0 deletions
diff --git a/crypto/src/util/io/BinaryWriters.cs b/crypto/src/util/io/BinaryWriters.cs
new file mode 100644
index 000000000..6650dcda5
--- /dev/null
+++ b/crypto/src/util/io/BinaryWriters.cs
@@ -0,0 +1,86 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Utilities.IO
+{
+    public static class BinaryWriters
+    {
+        public static void WriteInt16BigEndian(BinaryWriter binaryWriter, short n)
+        {
+            short bigEndian = BitConverter.IsLittleEndian ? Shorts.ReverseBytes(n) : n;
+            binaryWriter.Write(bigEndian);
+        }
+
+        public static void WriteInt16LittleEndian(BinaryWriter binaryWriter, short n)
+        {
+            short littleEndian = BitConverter.IsLittleEndian ? n : Shorts.ReverseBytes(n);
+            binaryWriter.Write(littleEndian);
+        }
+
+        public static void WriteInt32BigEndian(BinaryWriter binaryWriter, int n)
+        {
+            int bigEndian = BitConverter.IsLittleEndian ? Integers.ReverseBytes(n) : n;
+            binaryWriter.Write(bigEndian);
+        }
+
+        public static void WriteInt32LittleEndian(BinaryWriter binaryWriter, int n)
+        {
+            int littleEndian = BitConverter.IsLittleEndian ? n : Integers.ReverseBytes(n);
+            binaryWriter.Write(littleEndian);
+        }
+
+        public static void WriteInt64BigEndian(BinaryWriter binaryWriter, long n)
+        {
+            long bigEndian = BitConverter.IsLittleEndian ? Longs.ReverseBytes(n) : n;
+            binaryWriter.Write(bigEndian);
+        }
+
+        public static void WriteInt64LittleEndian(BinaryWriter binaryWriter, long n)
+        {
+            long littleEndian = BitConverter.IsLittleEndian ? n : Longs.ReverseBytes(n);
+            binaryWriter.Write(littleEndian);
+        }
+
+        [CLSCompliant(false)]
+        public static void WriteUInt16BigEndian(BinaryWriter binaryWriter, ushort n)
+        {
+            ushort bigEndian = BitConverter.IsLittleEndian ? Shorts.ReverseBytes(n) : n;
+            binaryWriter.Write(bigEndian);
+        }
+
+        [CLSCompliant(false)]
+        public static void WriteUInt16LittleEndian(BinaryWriter binaryWriter, ushort n)
+        {
+            ushort littleEndian = BitConverter.IsLittleEndian ? n : Shorts.ReverseBytes(n);
+            binaryWriter.Write(littleEndian);
+        }
+
+        [CLSCompliant(false)]
+        public static void WriteUInt32BigEndian(BinaryWriter binaryWriter, uint n)
+        {
+            uint bigEndian = BitConverter.IsLittleEndian ? Integers.ReverseBytes(n) : n;
+            binaryWriter.Write(bigEndian);
+        }
+
+        [CLSCompliant(false)]
+        public static void WriteUInt32LittleEndian(BinaryWriter binaryWriter, uint n)
+        {
+            uint littleEndian = BitConverter.IsLittleEndian ? n : Integers.ReverseBytes(n);
+            binaryWriter.Write(littleEndian);
+        }
+
+        [CLSCompliant(false)]
+        public static void WriteUInt64BigEndian(BinaryWriter binaryWriter, ulong n)
+        {
+            ulong bigEndian = BitConverter.IsLittleEndian ? Longs.ReverseBytes(n) : n;
+            binaryWriter.Write(bigEndian);
+        }
+
+        [CLSCompliant(false)]
+        public static void WriteUInt64LittleEndian(BinaryWriter binaryWriter, ulong n)
+        {
+            ulong littleEndian = BitConverter.IsLittleEndian ? n : Longs.ReverseBytes(n);
+            binaryWriter.Write(littleEndian);
+        }
+    }
+}