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authorlloyd <[email protected]>2010-05-25 14:44:27 +0000
committerlloyd <[email protected]>2010-05-25 14:44:27 +0000
commit432bcf59badb8f6271146772ccbc1649822c25cb (patch)
tree1353fa7ea1807be29e9e70237ad90014a36119d2 /src/block/idea_sse2/idea_sse2.h
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/idea_sse2/idea_sse2.h')
-rw-r--r--src/block/idea_sse2/idea_sse2.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/block/idea_sse2/idea_sse2.h b/src/block/idea_sse2/idea_sse2.h
index 657581d74..585de7264 100644
--- a/src/block/idea_sse2/idea_sse2.h
+++ b/src/block/idea_sse2/idea_sse2.h
@@ -18,7 +18,7 @@ namespace Botan {
class BOTAN_DLL IDEA_SSE2 : public IDEA
{
public:
- u32bit parallelism() const { return 16; }
+ u32bit parallelism() const { return 8; }
void encrypt_n(const byte in[], byte out[], u32bit blocks) const;
void decrypt_n(const byte in[], byte out[], u32bit blocks) const;