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o Security fixes:
- Try to leak less information about what relays a client is
choosing to a side-channel attacker. Previously, a Tor client
would stop iterating through the list of available relays as
soon as it had chosen one, thus leaking information about which
relays it picked for a circuit to a timing attack. (Tor is
likely to still leak information about which relays it has
chosen for a circuit to other processes on the same computer,
through e.g. which cache lines it loads while building the
circuit.)
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