[asterisk-bugs] [JIRA] (ASTERISK-27967) srtp: rejecting short sdes lifetimes incompatible with obihai ATAs

[Nick French (JIRA)]

Nick French created ASTERISK-27967:
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             Summary: srtp: rejecting short sdes lifetimes incompatible with obihai ATAs
                 Key: ASTERISK-27967
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27967
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Core/RTP
    Affects Versions: 15.5.0, 13.22.0
            Reporter: Nick French
            Severity: Minor


SRTP SDES key lifetime support was added in ASTERISK-17899.

In that addition, the minimum key lifetime to be accepted was set at the (as far as I can tell completely arbitrary) 10 hours @ 20ms/packet = 1800000 packets.

The firmware in the obi1xx ATA uses a hardcoded lifetime of 2^20 packets, so it cannot use SDES encryption with asterisk due to the arbitrary 10 hour limit.



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