Han-Wen Nienhuys
a59c127441
1) Always force a key exchange if we exchange 2^31 packets. In the past this might not happen if RekeyThreshold was set to a very large interval. 2) Follow recommendations from RFC 4344 for block ciphers. For AES, we can encrypt 2^(blocksize/4) blocks under the same keys. On modern hardware, the previous default of 1Gb could force a key exchange within ~10 seconds. Since the key exchange takes 3 roundtrips (send kex init, send DH init, send NEW_KEYS), this is relatively expensive on high-latency links. Change-Id: I1297124a307c541b7bf22d814d136ec0c6d8ed97 Reviewed-on: https://go-review.googlesource.com/35410 Run-TryBot: Han-Wen Nienhuys <hanwen@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Adam Langley <agl@golang.org>
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