Source note · SIP registration failures
RFC 8760 keeps MD5 only for backward compatibility with RFC 2617 and marks its use NOT RECOMMENDED.
Checked 2026-09-25
The obsolete MD5 algorithm remains only for backward compatibility with RFC 2617, but its use is NOT RECOMMENDED.
- Vendor
- not restricted
- Product
- SIP
- Subsystem
- authentication
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 8760
- Checked
- 2026-09-25
Sources
- RFC 8760: The Session Initiation Protocol (SIP) Digest Access Authentication Scheme — RFC Editor / IETF · tier 1 standards and regulators · sentence beginning 'The obsolete MD5 algorithm remains only for backward compatibility'
Cite this note
APA
WarmTransfer. (2026, September 25). SIP registration failures: source note sip-registration-failures-md5-not-recommended. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-registration-failures-md5-not-recommended
BibTeX
@misc{warmtransfer-claim-sip-registration-failures-md5-not-recommended,
title = {SIP registration failures: source note sip-registration-failures-md5-not-recommended},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-registration-failures-md5-not-recommended},
note = {Source note sip-registration-failures-md5-not-recommended, checked 2026-09-25}
}