1 files changed, 30 insertions, 0 deletions
diff --git a/src/lib/utils/get_byte.h b/src/lib/utils/get_byte.h
new file mode 100644
index 000000000..6f8ef2632
--- /dev/null
+++ b/src/lib/utils/get_byte.h
@@ -0,0 +1,30 @@
+/*
+* Read out bytes
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_GET_BYTE_H__
+#define BOTAN_GET_BYTE_H__
+
+#include <botan/types.h>
+
+namespace Botan {
+
+/**
+* Byte extraction
+* @param byte_num which byte to extract, 0 == highest byte
+* @param input the value to extract from
+* @return byte byte_num of input
+*/
+template<typename T> inline byte get_byte(size_t byte_num, T input)
+   {
+   return static_cast<byte>(
+      input >> ((sizeof(T)-1-(byte_num&(sizeof(T)-1))) << 3)
+      );
+   }
+
+}
+
+#endif