Hi Jason, > These two C implementations from Zinc -- a 32x32 one and a 64x64 one, > depending on the platform -- come from Andrew Moon's public domain > poly1305-donna portable code, modified for usage in the kernel. The > precomputation in the 32-bit version and the use of 64x64 multiplies > in the 64-bit version make these perform better than the code it > replaces. Can you provide some numbers to testify that? In my tests, the 32-bit version gives me exact the same results. The 64-bit version is roughly 10% faster. However, what are the platforms where the 64-bit version matters? Won't any SIMD version outperform the 64-bit version anyway? Martin
