Hello David, the cnonce is not so common but usually supported from kamailio. If you are having a trace, have a look to the raw SIP packet to see if it was maybe really truncated on the wire. The QOP seems to be missing/truncated from the dump below.
Cheers, Henning From: David Cunningham via sr-users <[email protected]> Sent: Dienstag, 18. November 2025 03:34 To: Kamailio (SER) - Users Mailing List <[email protected]> Cc: David Cunningham <[email protected]> Subject: [SR-Users] error while parsing credentials Hello, We have one particular device which won't authenticate with Kamailio, and are looking for any insight into why. When Kamailio receives the REGISTER it logs: Nov 17 17:50:37 sip /sbin/kamailio[2293367]: ERROR: {1 2 REGISTER mrXSmu5Gh} <core> [core/parser/digest/digest.c:323]: find_credentials(): error while parsing credentials Nov 17 17:50:37 sip /sbin/kamailio[2293367]: ERROR: {1 2 REGISTER mrXSmu5Gh} auth [api.c:73]: pre_auth(): Error while looking for credentials A redacted copy of the REGISTER is below. I note two unusual things: - On the Authorization header it says "[truncated]Authorization". - It includes a "cnonce" (client nonce) in the Authorization data, which is unusual compared to our other SIP devices. Thanks in advance! Session Initiation Protocol (REGISTER) Request-Line: REGISTER sip:sip.example.com:5060<http://sip.example.com:5060> SIP/2.0 Message Header To: "C25" <sip:[email protected]<mailto:sip%[email protected]>> SIP to display info: "C25" SIP to address: sip:[email protected]<mailto:sip%[email protected]> SIP to address User Part: 123456789 SIP to address Host Part: sip.example.com<http://sip.example.com> From: "C25" <sip:[email protected]<mailto:sip%[email protected]>>;tag=mmVG392Qv SIP from display info: "C25" SIP from address: sip:[email protected]<mailto:sip%[email protected]> SIP from tag: mmVG392Qv Contact: <sip:[email protected]:65477;transport=udp> Contact URI: sip:[email protected]:65477;transport=udp Via: SIP/2.0/UDP 11.22.221.114:65477;branch=z9hG4bK.X0v8d63yc CSeq: 2 REGISTER Call-ID: iYC5fcJqy [Generated Call-ID: iYC5fcJqy] Max-Forwards: 70 Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, NOTIFY User-Agent: Rogue sip 7.1.11 (stm32mp15-ya157c-v2) linux Expires: 3600 [truncated]Authorization: Digest realm="sip.example.com<http://sip.example.com>", nonce="aRvGYGkbxTQrS5pTzBoahdefo1xCqskN", algorithm=MD5, username="123456789", uri="sip:sip.example.com:5060<http://sip.example.com:5060>", response="ab717ce439c666e9b5651d0dc74dff9a", cnonce="MzrTCxYCoCPxZ Authentication Scheme: Digest Realm: "sip.example.com<http://sip.example.com>" Nonce Value: "aRvGYGkbxTQrS5pTzBoahdefo1xCqskN" Algorithm: MD5 Username: "123456789" Authentication URI: "sip:sip.example.com:5060<http://sip.example.com:5060>" Digest Authentication Response: "ab717ce439c666e9b5651d0dc74dff9a" CNonce Value: "MzrTCxYCoCPxZ91a" Nonce Count: 00000001 QOP: Content-Length: 0 -- David Cunningham, Voisonics Limited http://voisonics.com/ USA: +1 213 221 1092 New Zealand: +64 (0)28 2558 3782
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