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zzz
2025-06-09 10:49:49 -04:00
parent 3185eb3e89
commit b6c4aa2839
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i2p2www/spec/proposals/160-udp-trackers.rst
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@@ -5,7 +5,7 @@ UDP Trackers
:author: zzz
:created: 2022-01-03
:thread: http://zzz.i2p/topics/1634
:lastupdated: 2025-06-08
:lastupdated: 2025-06-09
:status: Open
:target: 0.9.68
@@ -509,13 +509,13 @@ Datagram3 packet, so it contains the sender's hash.
A recommended implementation is:
- Define the current epoch as the current time with a resolution of the connection lifetime,
epoch = now % lifetime.
- Define a cryptographic hash function H(secret, clienthash, epoch) which generates
``epoch = now / lifetime``.
- Define a cryptographic hash function ``H(secret, clienthash, epoch)`` which generates
an 8 byte output.
- Generate the random constant secret used for all connections.
- For connect responses, generate connection_id = H(secret, clienthash, epoch)
- For connect responses, generate ``connection_id = H(secret, clienthash, epoch)``
- For announce requests, validate the received connection ID in the current epoch by verifying
connection_id == H(secret, clienthash, epoch) || connection_id == H(secret, clienthash, epoch - 1)
``connection_id == H(secret, clienthash, epoch) || connection_id == H(secret, clienthash, epoch - 1)``
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