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authorlloyd <lloyd@randombit.net>2010-05-25 14:44:27 +0000
committerlloyd <lloyd@randombit.net>2010-05-25 14:44:27 +0000
commit432bcf59badb8f6271146772ccbc1649822c25cb (patch)
tree1353fa7ea1807be29e9e70237ad90014a36119d2 /src/block/noekeon_simd
parent211d835a356f55e037ff8035017d79c458f13615 (diff)
Change BlockCipher::parallelism() to return the native parallelism of
the implementation rather than the preferred one. Update all implementations. Add a new function parallel_bytes() which returns parallelism() * BLOCK_SIZE * BUILD_TIME_CONSTANT This is because i noticed all current calls of parallelism() just multiplied the result by the block size already, so this simplified that code. The build time constant is set to 4, which was the previous default return value of parallelism(). However the SIMD versions returned 2*native paralellism rather than 4*, so this increases the buffer sizes used for those algorithms. The constant multiple lives in buildh.in and build.h, and is named BOTAN_BLOCK_CIPHER_PAR_MULT.
Diffstat (limited to 'src/block/noekeon_simd')
-rw-r--r--src/block/noekeon_simd/noekeon_simd.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/block/noekeon_simd/noekeon_simd.h b/src/block/noekeon_simd/noekeon_simd.h
index 55fdfbd22..aba1e3d65 100644
--- a/src/block/noekeon_simd/noekeon_simd.h
+++ b/src/block/noekeon_simd/noekeon_simd.h
@@ -18,7 +18,7 @@ namespace Botan {
class BOTAN_DLL Noekeon_SIMD : public Noekeon
{
public:
- u32bit parallelism() const { return 8; }
+ u32bit parallelism() const { return 4; }
void encrypt_n(const byte in[], byte out[], u32bit blocks) const;
void decrypt_n(const byte in[], byte out[], u32bit blocks) const;