Add POWER8 SIMON-128 implementation

Performance went from about 30 to 40 cpb to 5.5 to 9 cpb, depending on endian-ness

1 files changed, 22 insertions, 0 deletions

diff --git a/simon.cpp b/simon.cpp
index 3329a78e..2f306933 100644
--- a/simon.cpp
+++ b/simon.cpp
@@ -225,6 +225,14 @@ extern size_t SIMON128_Dec_AdvancedProcessBlocks_SSSE3(const word64* subKeys, si
     const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);

 #endif

 

+#if (CRYPTOPP_POWER8_AVAILABLE)

+extern size_t SIMON128_Enc_AdvancedProcessBlocks_POWER8(const word64* subKeys, size_t rounds,

+    const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);

+

+extern size_t SIMON128_Dec_AdvancedProcessBlocks_POWER8(const word64* subKeys, size_t rounds,

+    const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);

+#endif

+

 std::string SIMON64::Base::AlgorithmProvider() const

 {

 #if defined(CRYPTOPP_SSE41_AVAILABLE)

@@ -327,6 +335,10 @@ std::string SIMON128::Base::AlgorithmProvider() const
     if (HasNEON())

         return "NEON";

 #endif

+#if (CRYPTOPP_POWER8_AVAILABLE)

+    if (HasPower8())

+        return "Power8";

+#endif

     return "C++";

 }

 

@@ -466,6 +478,11 @@ size_t SIMON128::Enc::AdvancedProcessBlocks(const byte *inBlocks, const byte *xo
         return SIMON128_Enc_AdvancedProcessBlocks_NEON(m_rkeys, (size_t)m_rounds,

             inBlocks, xorBlocks, outBlocks, length, flags);

 #endif

+#if (CRYPTOPP_POWER8_AVAILABLE)

+    if (HasPower8())

+        return SIMON128_Enc_AdvancedProcessBlocks_POWER8(m_rkeys, (size_t)m_rounds,

+            inBlocks, xorBlocks, outBlocks, length, flags);

+#endif

     return BlockTransformation::AdvancedProcessBlocks(inBlocks, xorBlocks, outBlocks, length, flags);

 }

 

@@ -482,6 +499,11 @@ size_t SIMON128::Dec::AdvancedProcessBlocks(const byte *inBlocks, const byte *xo
         return SIMON128_Dec_AdvancedProcessBlocks_NEON(m_rkeys, (size_t)m_rounds,

             inBlocks, xorBlocks, outBlocks, length, flags);

 #endif

+#if (CRYPTOPP_POWER8_AVAILABLE)

+    if (HasPower8())

+        return SIMON128_Dec_AdvancedProcessBlocks_POWER8(m_rkeys, (size_t)m_rounds,

+            inBlocks, xorBlocks, outBlocks, length, flags);

+#endif

     return BlockTransformation::AdvancedProcessBlocks(inBlocks, xorBlocks, outBlocks, length, flags);

 }

 #endif  // CRYPTOPP_SIMON128_ADVANCED_PROCESS_BLOCKS