IP multicast lacks encryption standard

8/10 High

IP multicast is used for group communication in IoT protocols but has no standard encryption mechanism (DTLS/encryption for IP multicast still unspecified), forcing insecure broadcast or host-based communication only.

IPmulticastDTLSCoAP
Category
security
Workaround
none
Stage
build
Freshness
persistent
Scope
cross_platform
Upstream
open
Recurring
Yes
Buyer Type
team

Sources

Collection History

Query: “What are the most common pain points with TCP/IP for developers in 2025?”4/9/2026

Encryption for IP multicast still needs to be invented so security only works in host-based communication... In fact, (DTLS) encryption in IP multicast still needs to be invented, meaning that you can not send encrypted information over the air to other CoAP devices using multicast!

Created: 4/9/2026Updated: 4/9/2026