Add LEA-128 NEON and ARMv8 implementation (GH #669)

LEA-128(128) from 35.6 cpb to 14.11 cpb on a LeMaker HiKey dev-board. LEA-128 from 12.60 cpb to 11.89 cpb on AMD Opteron 1100.

1 files changed, 25 insertions, 1 deletions

diff --git a/lea.cpp b/lea.cpp
index 780bb407..35149157 100644
--- a/lea.cpp
+++ b/lea.cpp
@@ -556,6 +556,7 @@ inline void SetKey256(word32 rkey[192], const word32 key[8])
 NAMESPACE_BEGIN(CryptoPP)

 

 #if CRYPTOPP_LEA_ADVANCED_PROCESS_BLOCKS

+# if defined(CRYPTOPP_SSSE3_AVAILABLE)

 extern void LEA_SplatKeys_SSSE3(SecBlock<word32>& rkeys);

 

 extern size_t LEA_Enc_AdvancedProcessBlocks_SSSE3(const word32* subKeys, size_t rounds,

@@ -563,6 +564,15 @@ extern size_t LEA_Enc_AdvancedProcessBlocks_SSSE3(const word32* subKeys, size_t
 

 extern size_t LEA_Dec_AdvancedProcessBlocks_SSSE3(const word32* subKeys, size_t rounds,

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

+# endif

+

+# if (CRYPTOPP_ARM_NEON_AVAILABLE)

+extern size_t LEA_Enc_AdvancedProcessBlocks_NEON(const word32* subKeys, size_t rounds,

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

+

+extern size_t LEA_Dec_AdvancedProcessBlocks_NEON(const word32* subKeys, size_t rounds,

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

+# endif

 #endif

 

 void LEA::Base::UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs &params)

@@ -596,7 +606,7 @@ void LEA::Base::UncheckedSetKey(const byte *userKey, unsigned int keyLength, con
         CRYPTOPP_ASSERT(0);;

     }

 

-#if (CRYPTOPP_SSSE3_AVAILABLE)

+#if (CRYPTOPP_LEA_ADVANCED_PROCESS_BLOCKS) && (CRYPTOPP_SSSE3_AVAILABLE)

     if (HasSSSE3())

     {

         // If we pre-splat the round keys at setup then we avoid a shuffle

@@ -850,20 +860,34 @@ void LEA::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byt
 size_t LEA::Enc::AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks,

         byte *outBlocks, size_t length, word32 flags) const

 {

+#if defined(CRYPTOPP_SSSE3_AVAILABLE)

     if (HasSSSE3()) {

         return LEA_Enc_AdvancedProcessBlocks_SSSE3(m_rkey, m_rounds,

             inBlocks, xorBlocks, outBlocks, length, flags);

     }

+#endif

+#if (CRYPTOPP_ARM_NEON_AVAILABLE)

+    if (HasNEON())

+        return LEA_Enc_AdvancedProcessBlocks_NEON(m_rkey, (size_t)m_rounds,

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

+#endif

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

 }

 

 size_t LEA::Dec::AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks,

         byte *outBlocks, size_t length, word32 flags) const

 {

+#if defined(CRYPTOPP_SSSE3_AVAILABLE)

     if (HasSSSE3()) {

         return LEA_Dec_AdvancedProcessBlocks_SSSE3(m_rkey, m_rounds,

             inBlocks, xorBlocks, outBlocks, length, flags);

     }

+#endif

+#if (CRYPTOPP_ARM_NEON_AVAILABLE)

+    if (HasNEON())

+        return LEA_Dec_AdvancedProcessBlocks_NEON(m_rkey, (size_t)m_rounds,

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

+#endif

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

 }

 #endif  // CRYPTOPP_LEA_ADVANCED_PROCESS_BLOCKS