diff options
Diffstat (limited to 'src/lib/block/serpent/serpent.h')
| -rw-r--r-- | src/lib/block/serpent/serpent.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/lib/block/serpent/serpent.h b/src/lib/block/serpent/serpent.h index b9864cf89..8f854678a 100644 --- a/src/lib/block/serpent/serpent.h +++ b/src/lib/block/serpent/serpent.h @@ -13,9 +13,10 @@ namespace Botan { /** -* Serpent, an AES finalist +* Serpent is the most conservative of the AES finalists +* http://www.cl.cam.ac.uk/~rja14/serpent.html */ -class BOTAN_DLL Serpent : public Block_Cipher_Fixed_Params<16, 16, 32, 8> +class BOTAN_DLL Serpent final : public Block_Cipher_Fixed_Params<16, 16, 32, 8> { public: void encrypt_n(const byte in[], byte out[], size_t blocks) const override; @@ -24,7 +25,22 @@ class BOTAN_DLL Serpent : public Block_Cipher_Fixed_Params<16, 16, 32, 8> void clear() override; std::string name() const override { return "Serpent"; } BlockCipher* clone() const override { return new Serpent; } + + size_t parallelism() const override { return 4; } + protected: +#if defined(BOTAN_HAS_SERPENT_SIMD) + /** + * Encrypt 4 blocks in parallel using SSE2 or AltiVec + */ + void simd_encrypt_4(const byte in[64], byte out[64]) const; + + /** + * Decrypt 4 blocks in parallel using SSE2 or AltiVec + */ + void simd_decrypt_4(const byte in[64], byte out[64]) const; +#endif + /** * For use by subclasses using SIMD, asm, etc * @return const reference to the key schedule |