1 files changed, 94 insertions, 0 deletions
diff --git a/crypto/src/util/io/BinaryReaders.cs b/crypto/src/util/io/BinaryReaders.cs
new file mode 100644
index 000000000..c5f99a712
--- /dev/null
+++ b/crypto/src/util/io/BinaryReaders.cs
@@ -0,0 +1,94 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Utilities.IO
+{
+    public static class BinaryReaders
+    {
+        public static byte[] ReadBytesFully(BinaryReader binaryReader, int count)
+        {
+            byte[] bytes = binaryReader.ReadBytes(count);
+            if (bytes == null || bytes.Length != count)
+                throw new EndOfStreamException();
+            return bytes;
+        }
+
+        public static short ReadInt16BigEndian(BinaryReader binaryReader)
+        {
+            short n = binaryReader.ReadInt16();
+            return BitConverter.IsLittleEndian ? Shorts.ReverseBytes(n) : n;
+        }
+
+        public static short ReadInt16LittleEndian(BinaryReader binaryReader)
+        {
+            short n = binaryReader.ReadInt16();
+            return BitConverter.IsLittleEndian ? n : Shorts.ReverseBytes(n);
+        }
+
+        public static int ReadInt32BigEndian(BinaryReader binaryReader)
+        {
+            int n = binaryReader.ReadInt32();
+            return BitConverter.IsLittleEndian ? Integers.ReverseBytes(n) : n;
+        }
+
+        public static int ReadInt32LittleEndian(BinaryReader binaryReader)
+        {
+            int n = binaryReader.ReadInt32();
+            return BitConverter.IsLittleEndian ? n : Integers.ReverseBytes(n);
+        }
+
+        public static long ReadInt64BigEndian(BinaryReader binaryReader)
+        {
+            long n = binaryReader.ReadInt64();
+            return BitConverter.IsLittleEndian ? Longs.ReverseBytes(n) : n;
+        }
+
+        public static long ReadInt64LittleEndian(BinaryReader binaryReader)
+        {
+            long n = binaryReader.ReadInt64();
+            return BitConverter.IsLittleEndian ? n : Longs.ReverseBytes(n);
+        }
+
+        [CLSCompliant(false)]
+        public static ushort ReadUInt16BigEndian(BinaryReader binaryReader)
+        {
+            ushort n = binaryReader.ReadUInt16();
+            return BitConverter.IsLittleEndian ? Shorts.ReverseBytes(n) : n;
+        }
+
+        [CLSCompliant(false)]
+        public static ushort ReadUInt16LittleEndian(BinaryReader binaryReader)
+        {
+            ushort n = binaryReader.ReadUInt16();
+            return BitConverter.IsLittleEndian ? n : Shorts.ReverseBytes(n);
+        }
+
+        [CLSCompliant(false)]
+        public static uint ReadUInt32BigEndian(BinaryReader binaryReader)
+        {
+            uint n = binaryReader.ReadUInt32();
+            return BitConverter.IsLittleEndian ? Integers.ReverseBytes(n) : n;
+        }
+
+        [CLSCompliant(false)]
+        public static uint ReadUInt32LittleEndian(BinaryReader binaryReader)
+        {
+            uint n = binaryReader.ReadUInt32();
+            return BitConverter.IsLittleEndian ? n : Integers.ReverseBytes(n);
+        }
+
+        [CLSCompliant(false)]
+        public static ulong ReadUInt64BigEndian(BinaryReader binaryReader)
+        {
+            ulong n = binaryReader.ReadUInt64();
+            return BitConverter.IsLittleEndian ? Longs.ReverseBytes(n) : n;
+        }
+
+        [CLSCompliant(false)]
+        public static ulong ReadUInt64LittleEndian(BinaryReader binaryReader)
+        {
+            ulong n = binaryReader.ReadUInt64();
+            return BitConverter.IsLittleEndian ? n : Longs.ReverseBytes(n);
+        }
+    }
+}