On 01/27/2014 05:46 PM, Michael StJohns wrote:
GCM uses a GF2 multiply as part of the integrity calculation. That
operation is pretty expensive. My guess is that if the code was
profiled, you'd find a lot of time being spent in
com.sun.crypto.provider.GHASH.
I ran into this and posted a fix:
I wrote a little test client/server setup that transfers 100 MB of data
over an SSL socket configured to use TLS 1.2 AES GCM
(TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256). On my i7-4770 CPU @ 3.40GHz with
OpenJDK 1.8.0-ea-b124 I get a transfer rate of around 5.2 MiB/second. I
expected a higher
Cross posting to security-dev, since the question cipher related.
-Chris.
On 27/01/14 09:28, Mark Christiaens wrote:
I wrote a little test client/server setup that transfers 100 MB of data
over an SSL socket configured to use TLS 1.2 AES GCM
(TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256). On my
