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4 Commits

Author SHA1 Message Date
Frank Denis
97fd0974b9 ghash: add pclmul support on x86_64 2020-10-01 02:05:11 +02:00
Frank Denis
8161de7fa4 Implement ghash aggregated reduction 
Performance increases from ~400 MiB/s to 450 MiB/s at the expense of
extra code. Thus, aggregation is disabled on ReleaseSmall.

Since the multiplication cost is significant compared to the reduction,
aggregating more than 2 blocks is probably not worth it.
 2020-10-01 02:05:07 +02:00
Frank Denis
f1ad94437b ghash & poly1305: use pointer to slices for keys and output 2020-10-01 02:04:30 +02:00
Frank Denis
58873ed3f9 std/crypto: add GHASH implementation 
GHASH is required to implement AES-GCM.

Optimized implementations for CPUs with instructions for carry-less
multiplication will be added next.
 2020-10-01 02:04:30 +02:00