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Liaison statement
LS on SG17 work item X.ibc-iot: Security framework for using Identity Based Cryptography for IoT services over telecom networks

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State Posted
Submitted Date 2019-02-13
From Group ITU-T-SG-17
From Contact Xiaoya Yang
To Group tls
To Contacts Christopher Wood <>
Joseph Salowey <>
Sean Turner <>
Cc Transport Layer Security Discussion List <>
Scott Mansfield <>
Sean Turner <>
Benjamin Kaduk <>
Christopher Wood <>
Joseph Salowey <>
Eric Rescorla <>
Response Contact
Purpose For action
Deadline 2019-06-30 Action Needed
Attachments SG17-LS173-att
Liaisons referring to this one Liaison to SG17
In our meeting (Geneva, 22-30 January 2019), ITU-T SG17 revised draft
Recommendation of ITU-T X.ibc-iot Security framework for using identity based
cryptography for IoT services over telecom networks which is now being
developed in Q6/17, and targets its completion in next SG17 meeting in 27
August – 5 September 2019.

The Recommendation includes using TLS 1.3 with identity-based signature
algorithms for IoT security in Annex D. To facilitate the protocol with such
capabilities, according to the TLS 1.3 specification, the SignatureScheme
should be extended with values for such algorithms. Four algorithms have been
considered, which are ECCSI specified in RFC 6507, IBS1, IBS2 and SM9_IBS
standardized in ISO/IEC 14888-3. It would be very helpful if the values for the
following signature schemes are assigned or reserved under your assistance: