Fix srtp_unprotect_rtcp_mki when RTP auth != RTCP#737
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pabuhler merged 1 commit intocisco:mainfrom Dec 11, 2024
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srtp_get_session_keys, which is used by both srtp_unprotect_mki and srtp_unprotect_rtcp_mki, determines the tag len from rtp_auth. This fails when rtp_auth differ from rtcp_auth. E.g. when SRTP is used with weak authentication but SRTCP must not (RFC 3711). This commit splits the function in two: srtp_get_session_keys_rtp srtp_get_session_keys_rtcp And adds a short auth policy test to test/srtp_driver. (cherry picked from commit 63a19f4)
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Nov 9, 2025
Fix srtp_unprotect_rtcp_mki when RTP auth != RTCP
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srtp_get_session_keys, which is used by both srtp_unprotect_mki and srtp_unprotect_rtcp_mki, determines the tag len from rtp_auth.
This fails when rtp_auth differ from rtcp_auth. E.g. when SRTP is used with weak authentication but SRTCP must not (RFC 3711).
This commit splits the function in two:
srtp_get_session_keys_rtp
srtp_get_session_keys_rtcp
And adds a short auth policy test to test/srtp_driver.
(cherry picked from commit 63a19f4)
Cherry picked from #733