tree 812c2b98710540bdc3b4efd99dff9331f0eb1253
parent 5f4783e7124add319eef8ff40de4f1dbcd74437d
author dschinazi <dschinazi@google.com> 1563466059 -0700
committer Copybara-Service <copybara-worker@google.com> 1563479011 -0700

QuicConnectionId::Hash adoption of SipHash

This CL rolls back cl/258561852 which was itself a rollback of cl/258413870. QuicConnectionIdTest.Hash was failing on 32bit platforms and has now been fixed.

Instead of simply XORing the connection ID bits, QuicConnectionId::Hash now uses SipHash with a random key generated once per process lifetime. This prevents attackers from crafting connection IDs to make them all land in the same data structure hash bucket.

gfe-relnote: QuicConnectionId uses SipHash, protected by gfe2_restart_flag_quic_connection_id_use_siphash
PiperOrigin-RevId: 258782229
Change-Id: I019c85ba2cde0447764306b87f12323d6867acb0