Skip to content

[PowerPC] Implement Poly1305 single block update based on radix 2^64

Maamoun TK requested to merge mamonet/nettle:ppc-r64-44 into master

This patch optimizes Poly1305 for powerpc64 architecture by utilizing POWER9-specific instruction vmsumudm for full 64-bit multiplication applied on single block based on radix 2^64

The patch also adds new option --enable-power9 for configuration to compile Power ISA v3.0 code.

testsuite passes all tests of this patch.

Benchmark of poly1305 update using nettle-benchmark on Power9

C This patch
472.63 Mbyte/s 657.47 Mbyte/s

Merge request reports