From f4ad8ecfa14b59dbf06a9595f8dacccb3b7f04e3 Mon Sep 17 00:00:00 2001 From: lloyd Date: Sun, 23 Nov 2008 02:03:16 +0000 Subject: I had not anticipated this being really worthwhile, but it turns out to have been so! Change MDx_HashFunction::hash to a new compress_n which hashes an arbitrary number of blocks. I had a thought this might reduce a bit of loop overhead but the results were far better than I anticipated. Speedup across the board of about 2%, and very noticable (+10%) increases for MD4 and Tiger (probably b/c both of those have so few instructions in each iteration of the compression function). Before: SHA-1: amd64: 211.9 MiB/s core: 210.0 MiB/s sse2: 295.2 MiB/s MD4: 476.2 MiB/s MD5: 355.2 MiB/s SHA-256: 99.8 MiB/s SHA-512: 151.4 MiB/s RIPEMD-128: 326.9 MiB/s RIPEMD-160: 225.1 MiB/s Tiger: 214.8 MiB/s Whirlpool: 38.4 MiB/s After: SHA-1: amd64: 215.6 MiB/s core: 213.8 MiB/s sse2: 299.9 MiB/s MD4: 528.4 MiB/s MD5: 368.8 MiB/s SHA-256: 103.9 MiB/s SHA-512: 156.8 MiB/s RIPEMD-128: 334.8 MiB/s RIPEMD-160: 229.7 MiB/s Tiger: 240.7 MiB/s Whirlpool: 38.6 MiB/s --- src/hash/sha1_sse2/sha1_sse2.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/hash/sha1_sse2/sha1_sse2.h') diff --git a/src/hash/sha1_sse2/sha1_sse2.h b/src/hash/sha1_sse2/sha1_sse2.h index 4bd8c1baa..57348e461 100644 --- a/src/hash/sha1_sse2/sha1_sse2.h +++ b/src/hash/sha1_sse2/sha1_sse2.h @@ -19,7 +19,7 @@ class BOTAN_DLL SHA_160_SSE2 : public SHA_160 HashFunction* clone() const { return new SHA_160_SSE2; } SHA_160_SSE2() : SHA_160(0) {} // no W needed private: - void hash(const byte[]); + void compress_n(const byte[], u32bit blocks); }; extern "C" void botan_sha1_sse2_compress(u32bit[5], const u32bit*); -- cgit v1.2.3