Using Identity as Raw Public Key in Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS)
draft-wang-tls-raw-public-key-with-ibc-13
Internet Engineering Task Force H. Wang, Ed.
Internet-Draft Y. Yang
Intended status: Informational X. Kang
Expires: April 12, 2021 Huawei International Pte. Ltd.
Z. Cheng
Shenzhen Olym Info. Security Tech. Ltd.
M. Chen
China Mobile
October 9, 2020
Using Identity as Raw Public Key in Transport Layer Security (TLS) and
Datagram Transport Layer Security (DTLS)
draft-wang-tls-raw-public-key-with-ibc-13
Abstract
This document specifies the use of identity as a raw public key in
Transport Layer Security (TLS) and Datagram Transport Layer Security
(DTLS). The TLS protocol procedures are kept unchanged, but
signature algorithms are extended to support Identity-based signature
(IBS). A few Identity-based signature algorithms from different
standard organizations are supported in the current version.
Status of This Memo
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This Internet-Draft will expire on April 12, 2021.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Extension of RAW Public Key to IBC-based Public Key . . . . . 4
4. New Signature Algorithms for IBS . . . . . . . . . . . . . . 9
5. Identity Format and Key Revocation . . . . . . . . . . . . . 10
6. TLS Client and Server Handshake Behavior . . . . . . . . . . 11
7. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.1. TLS Client and Server Use IBS algorithm . . . . . . . . . 13
7.2. Combined Usage of Raw Public Keys and X.509 Certificates 14
8. Security Considerations . . . . . . . . . . . . . . . . . . . 16
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 17
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 17
11.1. Normative References . . . . . . . . . . . . . . . . . . 17
11.2. Informative References . . . . . . . . . . . . . . . . . 18
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 19
1. Introduction
DISCLAIMER: This is a personal draft and a limited security analysis
is provided.
Traditionally, TLS client and server exchange public keys endorsed by
PKIX [PKIX] certificates. It is considered complicated and may cause
security weaknesses with the use of PKIX certificates
[Defeating-SSL]. To simplify certificates exchange, using RAW public
key with TLS/DTLS has been specified in [RFC 7250] and has been
included in the TLS 1.3 [RFC 8446]. Instead of transmitting a full
certificate or a certificate chain in the TLS messages, only public
keys are exchanged between client and server. However, using RAW
public key requires out-of-band mechanisms to verify the purported
public key to the claimed entity.
Recently, 3GPP has adopted the EAP authentication framework for 5G
and EAP-TLS is considered as one of the candidate authentication
methods for private networks, especially for networks with a large
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