Add CHAM128 SSSE3 implementation (PR #670)

CHAM-128(128) from 10.5 cpb to 4.1 cpb. CHAM-128(256) from 12.5 cpb to 4.7 cpb.

1 files changed, 13 insertions, 1 deletions

diff --git a/cham.h b/cham.h
index 52edc4dc..1c8b02b1 100644
--- a/cham.h
+++ b/cham.h
@@ -15,6 +15,10 @@
 #include "secblock.h"

 #include "algparam.h"

 

+#if (CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86)

+# define CRYPTOPP_CHAM128_ADVANCED_PROCESS_BLOCKS 1

+#endif

+

 NAMESPACE_BEGIN(CryptoPP)

 

 /// \brief CHAM block cipher information

@@ -92,7 +96,7 @@ typedef CHAM64::Decryption CHAM64Decryption;
 /// \brief CHAM 128-bit block cipher

 /// \details CHAM128 provides 128-bit block size. The valid key size is 128-bit and 256-bit.

 /// \note Crypto++ provides a byte oriented implementation

-/// \sa CHAM128, <a href="http://www.cryptopp.com/wiki/CHAM">CHAM</a>, <a href=

+/// \sa CHAM64, <a href="http://www.cryptopp.com/wiki/CHAM">CHAM</a>, <a href=

 ///   "https://pdfs.semanticscholar.org/2f57/61b5c2614cffd58a09cc83c375a2b32a2ed3.pdf">

 ///   CHAM: A Family of Lightweight Block Ciphers for Resource-Constrained Devices</a>

 /// \since Crypto++ 7.1

@@ -120,6 +124,10 @@ public:
     {

     public:

         void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;

+

+#if CRYPTOPP_CHAM128_ADVANCED_PROCESS_BLOCKS

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

+#endif

     };

 

     /// \brief Provides implementation for encryption transformation

@@ -130,6 +138,10 @@ public:
     {

     public:

         void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;

+

+#if CRYPTOPP_CHAM128_ADVANCED_PROCESS_BLOCKS

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

+#endif

     };

 

     typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;