Commit 7a2dc599 authored by Niels Möller's avatar Niels Möller
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Rev: nettle/ChangeLog:1.130
parent 49da2d43
2011-02-06 Niels Mller <>
* gcm.c (gcm_rightshift): Complete rewrite, to use word rather
than byte operations. Improves gmac performance from 830 cycles /
byte to (still poor) 268 cycles per byte on intel x86_64.
(gcm_gf_mul): Rewrote. Still uses the bitwise algorithm from the
specification, but with separate byte and bit loops. Improves gmac
performance a bit further, to 227 cycles/byte.
2011-02-05 Niels Mller <>
* examples/nettle-benchmark.c (time_gmac): New function.
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