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

[Friendly Automation (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-27967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=244156#comment-244156 ] 

Friendly Automation commented on ASTERISK-27967:
------------------------------------------------

Change 9503 merged by George Joseph:
SRTP: Lower SDES key lifetime minimum to 2^20

[https://gerrit.asterisk.org/9503|https://gerrit.asterisk.org/9503]

> 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: 13.22.0, 15.5.0
>            Reporter: Nick French
>            Assignee: 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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