1 files changed, 0 insertions, 66 deletions
diff --git a/src/lib/utils/ta_utils.cpp b/src/lib/utils/ta_utils.cpp
deleted file mode 100644
index 8aee726ec..000000000
--- a/src/lib/utils/ta_utils.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
-* Timing Attack Countermeasure Functions
-* (C) 2010 Falko Strenzke, Jack Lloyd
-*
-* Botan is released under the Simplified BSD License (see license.txt)
-*/
-
-#include <botan/internal/ta_utils.h>
-
-namespace Botan {
-
-namespace TA_CM {
-
-/*
-* We use volatile in these functions in an attempt to ensure that the
-* compiler doesn't optimize in a way that would create branching
-* operations.
-*
-* Note: this needs further testing; on at least x86-64 with GCC,
-* volatile is not required to get branch-free operations, it just
-* makes the functions much longer/slower. It may not be required
-* anywhere.
-*/
-
-namespace {
-
-template<typename T>
-T expand_mask(T x)
-   {
-   volatile T r = x;
-   for(size_t i = 1; i != sizeof(T) * 8; i *= 2)
-      r |= r >> i;
-   r &= 1;
-   r = ~(r - 1);
-   return r;
-   }
-
-}
-
-u32bit expand_mask_u32bit(u32bit in)
-   {
-   return expand_mask<u32bit>(in);
-   }
-
-u16bit expand_mask_u16bit(u16bit in)
-   {
-   return expand_mask<u16bit>(in);
-   }
-
-u32bit max_32(u32bit a, u32bit b)
-   {
-   const u32bit a_larger = b - a; /* negative if a larger */
-   const u32bit mask = expand_mask<u32bit>(a_larger >> 31);
-   return (a & mask) | (b & ~mask);
-   }
-
-u32bit min_32(u32bit a, u32bit b)
-   {
-   const u32bit a_larger = b - a; /* negative if a larger */
-   const u32bit mask = expand_mask<u32bit>(a_larger >> 31);
-   return (a & ~mask) | (b & mask);
-   }
-
-}
-
-}